WO2021004346A1 - Method and system for constructing natural tooth library - Google Patents
Method and system for constructing natural tooth library Download PDFInfo
- Publication number
- WO2021004346A1 WO2021004346A1 PCT/CN2020/099685 CN2020099685W WO2021004346A1 WO 2021004346 A1 WO2021004346 A1 WO 2021004346A1 CN 2020099685 W CN2020099685 W CN 2020099685W WO 2021004346 A1 WO2021004346 A1 WO 2021004346A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tooth
- data
- natural
- dental
- classification
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/10—Constructive solid geometry [CSG] using solid primitives, e.g. cylinders, cubes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/50—Depth or shape recovery
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H30/00—ICT specially adapted for the handling or processing of medical images
- G16H30/40—ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30036—Dental; Teeth
Definitions
- the invention relates to the technical field of biological information, in particular to a method and system for constructing a natural tooth type database.
- the production of dental prosthesis is a crucial step in the treatment of dental prosthetics.
- digital technology in the field of dental prosthetics, the production of artificial teeth for dentures has gradually changed from wax, porcelain, and tooth arrangement to digital design and CNC cutting.
- 3D printing doctors and technicians' cognition and use of tooth shape has also changed from the previous cognition of tooth anatomy to a three-dimensional digital model.
- CAD/CAM CAD/CAM
- the rapid development of digital technology in the field of dental prosthesis is due to its intelligence, convenience and efficiency.
- the overall design process of dentures includes digital scanning models, digital design of restorations, and finally CNC cutting or 3D printing; only simple steps are required
- the production of the restoration is completed, and most of the procedures are completed by the computer.
- the advantages of digital technology are very obvious.
- the digital design of CAD In the process of digital production of restorations, the only step that requires more human involvement is the digital design of CAD. The corresponding design must be completed before it can be cut or printed.
- the current digital design does not design the restoration out of thin air in the software, but uses the existing finished tooth data or 3D tooth model to pour it into the design interface, complete the arrangement and appropriate carving processing, and then form the restoration.
- Basically refer to the tooth profile data to directly design the restoration.
- All dental professional design software has a tooth profile database (Tooth Library) for designers to use. Therefore, the quality of the tooth profile database is particularly important for restoration design, and the quality and shape of the final solid restoration are also directly affected by the tooth profile database.
- the technical problem to be solved by the present invention is that the existing tooth type database lacks universal applicability and lacks the unique texture of natural teeth, which is difficult to meet the needs of various types of patients and doctors.
- the purpose is to provide a construction of a natural tooth type database. Method and system to solve the above problems.
- a method for constructing a natural tooth profile database includes the following steps: S1: screening out subjects and recording the subject’s information; S2: scanning all natural teeth of the subject’s upper and lower arches and constructing a three-dimensional based on the scanning results Model; S3: Separate each natural tooth on the three-dimensional model separately, and the segmentation process does not destroy the hard tissue morphology of the tooth; S4: trim the divided natural tooth, remove the soft tissue part around the tooth, and retain Hard tissues of the tooth, and smooth processing of rough triangular faces and scanning defects; S5: mirror image processing of the trimmed tooth on the same side to generate symmetrical tooth data with the same shape and size; S6: according to the type and size of the tooth Edit the dental anatomical landmark area on the symmetrical tooth data to form the tooth data and pontic data; S7: match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model to obtain Position arrangement data of each tooth; S8: match the tooth body data, pontic data and position arrangement data with the information
- the present invention When the present invention is applied, a sample of the database is first required, and the formation of the database sample needs to follow certain requirements. Therefore, in the present invention, the subject is first screened out and the subject’s information is recorded for subsequent database generation; then the subject is scanned All the natural teeth of the upper and lower arches of the object, and construct a three-dimensional model based on the scanning results.
- the construction method can be completed by various existing auxiliary software and tools; then each natural tooth on the three-dimensional model is segmented separately,
- the model includes soft tissues and tooth hard tissues.
- the present invention first performs segmentation here for subsequent processing; then the segmented teeth are trimmed.
- the trimming content includes removing soft tissues, and scanning and constructing Deal with defects in the mold.
- the denture itself is not symmetrical during clinical denture production, it will not only cause unsightly teeth, but also cause some unfavorable physiological reactions after dental implantation.
- the present invention creatively adopts mirroring technology.
- the teeth on the same side here refer to the teeth on the left side or the teeth on the right side.
- the symmetrical tooth data is edited in the dental anatomical landmark area to form the tooth data and pontic data; due to the different anatomical characteristics, the characteristics of the front and rear teeth are different.
- the meaning is for different types of teeth.
- the teeth need to be edited differently, and the part of the tooth refers to the crown and pontic.
- the editing of the two is also different.
- the database can be more perfect by subdividing the type and part of the tooth.
- the teeth need to be positioned and the specific three-dimensional coordinates of each tooth can be obtained to achieve the complete information of the entire set of specific combinations of teeth.
- the tooth data, pontic data, and position arrangement data are all matched with the information of the test subject to form a natural tooth profile database; the matching here means that the information of the test subject is combined with the tooth obtained from the test subject. Volume data, pontic data, and position arrangement data are mapped into a map.
- the characteristics of the new user can be compared to the subjects in the database Then find the most matching test subject, and then extract the best matching test subject’s dental data, pontic data and position arrangement data to be used as treatment parameters.
- the database generated by the present invention has excellent application Sex.
- the invention scans the healthy natural teeth of different groups of people and records their characteristics through digital technology.
- the specific teeth are performed according to the algorithm required by the design software.
- Body anatomy editing to complete the construction of the natural tooth profile database.
- This database can be imported and used in all types of restoration designs according to the conventional design process. It can be directly used for digital design, which improves the efficiency of denture processing and improves the aesthetics of the restoration.
- Performance the designed natural tooth profile database has the characteristics, contours and textures of natural teeth.
- the screening content includes: no dental treatment; no periodontal disease or caries; no developmental deformity; natural teeth have applicable anatomical characteristics;
- the information of the subject includes records Subject's name, age, gender, race, occupation, birthplace, body type classification, frontal facial type classification, lateral facial type classification, dental arch morphology classification, central incisor morphology classification, occlusal classification and wear classification.
- the test subject In order to ensure the accuracy and applicability of the data obtained by the database, the test subject needs to be clearly screened.
- the recorded information of the test subject is also carried out. clear.
- step S6 the editing of the dental anatomical landmark area includes: coordinates, occlusal surface, incisal margin, contour high-point line, cervical margin, groove fissure, contact area, tooth cusp, cusp apex, ridge, occlusal Area and bottom of pontic.
- the dental professional database editing software is used to perform anatomical editing on each tooth data, including coordinates (Axes), occlusal surface (Chewing surface), incisal edge (Incisal edge), and contour high point line (Equator). ), Cervical border, Fissure, Approx contact, Cusp1-5, Cusp tips, Ridge, Desired occlusion area , 12 items at the bottom of the pontic (Bottom); due to the different anatomical characteristics, the characteristics of the front and rear teeth are different.
- step S6 includes the following sub-steps: editing the incisal edge of the anterior teeth; editing the occlusal surface, cusp, cusp apex, furrow and occlusal area of the premolar and molar; The 3D model is closed and the bottom of the bridge is edited.
- the editing of the crown and the pontic is also different.
- the pontic needs to close the gap at the root, and then edit the bottom of the pontic, that is, the crest.
- step S7 includes the following sub-steps: using a network matching algorithm to match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model.
- the dental professional database editing software is used to edit the three-dimensional position arrangement of each tooth data, and the mesh matching algorithm is used to match each tooth data with the corresponding tooth of the original dentition data. So as to obtain the three-dimensional position information of the database teeth at every moment.
- a construction system for a natural tooth profile database including: a database unit: used to form, store and call a natural tooth profile database; a screening unit: used to screen out subjects and record the subject’s information and store them in the database unit; 3D modeling unit: used to scan all the natural teeth of the upper and lower arches of the subject and construct a 3D model according to the scanning results; segmentation unit: used to separate each natural tooth on the 3D model and segment it The process does not destroy the hard tissue morphology of the tooth; the trimming unit: used to trim the segmented natural tooth, remove the soft tissue around the tooth, preserve the hard tissue of the tooth, and smoothly treat the rough triangle surface and scanning defects ; Mirror unit: used to mirror the trimmed teeth on the same side to generate symmetrical tooth data with the same shape and size; dental anatomy landmark area editing unit: used to align the symmetrical tooth data according to the type and location of the tooth Edit the dental anatomy landmark area to form tooth data and pontic data; dentition data positioning editing unit: used to match the tooth data of each tooth with the position
- the screening content includes: not undergoing any dental treatment; no periodontal disease or caries; no developmental deformities; natural teeth with applicable anatomical characteristics; information about the subject Including recording the subject’s name, age, gender, race, occupation, birthplace, body type classification, frontal facial type classification, lateral facial type classification, dental arch shape classification, central incisor shape classification, occlusal classification and wear classification.
- the dental anatomical landmark area editing includes: coordinates, occlusal surface, incisal margin, contour high-point line, cervical margin, groove fissure, contact area, tooth tip , Apex, ridge, occlusal area and bottom of pontic.
- the dental anatomy landmark area editing unit is used to: edit the incisal edge of the anterior teeth; edit the occlusal surface, cusp, cusp apex, groove and occlusal area of the premolar and molar; for the pontic To close the three-dimensional model and edit the bottom of the bridge.
- the dentition data positioning editing unit uses a network matching algorithm to match the dentition data of each tooth with the position of the corresponding tooth in the three-dimensional model.
- the present invention has the following advantages and beneficial effects:
- a method and system for constructing a natural tooth profile database of the present invention scans healthy natural teeth of different groups of people and records their characteristics through digital technology, and through 3D modeling, digital design, 3D tooth profile analysis, Virtual tooth shape carving, specific tooth anatomy editing according to the algorithm required by the design software, complete the construction of the natural tooth shape database, this database can be imported and used in all types of restoration designs according to the conventional design process, and can be directly used for digitization The design improves the efficiency of denture processing and the aesthetic performance of the restoration.
- the designed natural tooth profile database has the characteristics, contours and textures of natural teeth;
- a method and system for constructing a natural tooth profile database of the present invention All steps and methods such as the use and design of the natural tooth profile database are exactly the same as the traditional digital design, with simple operation and convenient and quick design;
- a method and system for constructing a natural tooth profile database according to the present invention The selection of the natural tooth profile database is based on the case and patient's conditions, matching the information of the subject, and selecting the most suitable individualized natural tooth profile for the case ;
- the natural tooth profile database has strong compatibility and can complete the design of restorations in all modules in the design software, including crowns, bridges, veneers, inlays, Removable partial dentures and complete dentures;
- a method and system for constructing a natural tooth profile database of the present invention solves the problem of the lack of personalized elements in digital restorations, provides more restoration designs, and is more suitable for Asian tooth type selection.
- Figure 1 is a schematic diagram of the steps of the present invention
- Figure 2 is a schematic diagram of a three-dimensional model obtained by scanning in the present invention.
- Figure 3 is a schematic diagram of the segmented dentition of the present invention.
- Figure 4 is a schematic diagram of the modified tooth morphology of the present invention.
- FIG. 5 is a schematic diagram of mirroring processing of the present invention.
- Fig. 6 is a schematic diagram of editing the dental anatomy landmark area of the present invention.
- FIG. 7 is a schematic diagram of positioning and editing dentition data of the present invention.
- Figure 8 is a schematic diagram of the application of the natural tooth profile database of the present invention in the digital design of fixed restorations
- Figure 9 is a schematic diagram of the application of the natural tooth profile database of the present invention in the digital design of active restorations
- Figure 10 is a side view of teeth in the shaping database of the present invention.
- Figure 11 is a top view of the teeth in the shaping database of the present invention.
- a method and system for constructing a natural tooth profile database of the present invention includes the following steps: S1: screening out subjects and recording the subject’s information; S2: checking all the upper and lower arches of the subject Scan the natural teeth and construct a three-dimensional model based on the scan results; S3: separate each natural tooth on the three-dimensional model separately, and the segmentation process does not destroy the hard tissue morphology of the tooth; S4: trim the segmented natural tooth , Remove the soft tissue around the tooth, retain the hard tissue of the tooth, and smoothly process the rough triangular facets and scanning defects; S5: mirror the trimmed tooth on the same side to generate a symmetrical tooth with the same shape and size Volume data; S6: According to the type and position of the tooth, edit the dental anatomical landmark area to form the dental data and pontic data; S7: Combine the dental data of each tooth with the three-dimensional model Match the position of the corresponding tooth to obtain the position arrangement data of each tooth; S8: match the tooth data, pontic
- a sample of the database is first required, and the formation of the database sample needs to follow certain requirements. Therefore, in the present invention, the subject is first screened out and the subject’s information is recorded for subsequent database generation; then the subject is scanned. All the natural teeth of the upper and lower arches of the test object are constructed, and a 3D model is constructed according to the scanning results.
- the construction method can be completed by using various existing auxiliary software and tools; then each natural tooth on the 3D model is separately segmented,
- the three-dimensional model includes soft tissue and tooth hard tissue.
- the present invention first performs segmentation here for subsequent processing; then the segmented teeth are trimmed.
- the trimming content includes removing soft tissue, and scanning and Defects in modeling are dealt with.
- the denture itself is not symmetrical during clinical denture production, it will not only cause unsightly teeth, but also cause some unfavorable physiological reactions after dental implantation.
- the present invention creatively adopts mirroring technology.
- the teeth on the same side here refer to the teeth on the left side or the teeth on the right side.
- the symmetrical tooth data is edited in the dental anatomical landmark area to form the tooth data and pontic data; due to the different anatomical characteristics, the characteristics of the front and rear teeth are different.
- the meaning is for different types of teeth.
- the teeth need to be edited differently, and the part of the tooth refers to the crown and pontic.
- the editing of the two is also different.
- the database can be more perfect by subdividing the type and part of the tooth.
- the teeth need to be positioned and the specific three-dimensional coordinates of each tooth can be obtained to achieve the complete information of the entire set of specific combinations of teeth.
- the tooth data, pontic data, and position arrangement data are all matched with the information of the test subject to form a natural tooth profile database; the matching here means that the information of the test subject is combined with the tooth obtained from the test subject. Volume data, pontic data, and position arrangement data are mapped into a map.
- the characteristics of the new user can be compared to the subjects in the database Then find the most matching test subject, and then extract the best matching test subject’s dental data, pontic data and position arrangement data to be used as treatment parameters.
- the database generated by the present invention has excellent application Sex.
- the invention scans the healthy natural teeth of different groups of people and records their characteristics through digital technology.
- the specific teeth are performed according to the algorithm required by the design software.
- Body anatomy editing to complete the construction of the natural tooth profile database.
- This database can be imported and used in all types of restoration designs according to the conventional design process. It can be directly used for digital design, which improves the efficiency of denture processing and improves the aesthetics of the restoration.
- Performance the designed natural tooth profile database has the characteristics, contours and textures of natural teeth.
- the screening content includes: no dental treatment; no periodontal disease or caries; no developmental deformity; natural teeth have applicable anatomical characteristics;
- the information of the subject includes recording the subject’s name, age, gender, race, occupation, place of birth, body type, frontal facial type, lateral facial type, dental arch morphology, central incisor morphology, and occlusion And wear classification.
- test subject in order to ensure the accuracy and applicability of the data obtained by the database, the test subject needs to be clearly screened.
- the recorded information of the test subject in order to facilitate matching after the database is generated, the recorded information of the test subject is also processed. Made clear.
- the dental anatomical landmark area editing includes: coordinates, occlusal surface, incisal margin, contour high-point line, cervical margin, groove fissure, contact area, tooth tip , Apex, ridge, occlusal area and bottom of pontic.
- the dental professional database editing software is used to perform anatomical editing on each tooth data, including coordinates (Axes), occlusal surface (Chewing surface), incisal edge (Incisal edge), and contour high point line ( Equator, Cervical border, Fissure, Approx contact, Cusp1-5, Cusptips, Ridge, Desired occlusion area ), 12 items at the bottom of the bridge (Bottom); due to different anatomical characteristics, the characteristics of the front and rear teeth are different.
- step S6 includes the following sub-steps: editing the incisal margin of the anterior teeth; editing the occlusal surface, cusp, cusp apex, furrow and occlusal area of the premolar and molar ; For the bridge, close the three-dimensional model and edit the bottom of the bridge.
- the editing of the crown and the pontic is also different.
- the pontic needs to close the gap at the root, and then edit the bottom of the pontic, that is, the crest.
- step S7 includes the following sub-steps: using a network matching algorithm to match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model.
- the professional dental database editing software is used to edit the three-dimensional position arrangement of each tooth data
- the mesh matching algorithm is used to match each tooth data with the corresponding tooth of the original dentition data. , So as to obtain the three-dimensional position information of the database teeth at every moment.
- a construction system for a natural tooth profile database including: a database unit: used to form, store and call a natural tooth profile database; a screening unit: used to screen out subjects and record the subject’s information and store them in the database unit; 3D modeling unit: used to scan all the natural teeth of the upper and lower arches of the subject and construct a 3D model according to the scanning results; segmentation unit: used to separate each natural tooth on the 3D model and segment it The process does not destroy the hard tissue morphology of the tooth; the trimming unit: used to trim the segmented natural tooth, remove the soft tissue around the tooth, preserve the hard tissue of the tooth, and smoothly treat the rough triangle surface and scanning defects ; Mirror unit: used to mirror the trimmed teeth on the same side to generate symmetrical tooth data with the same shape and size; dental anatomy landmark area editing unit: used to align the symmetrical tooth data according to the type and location of the tooth Edit the dental anatomy landmark area to form tooth data and pontic data; dentition data positioning editing unit: used to match the tooth data of each tooth with the position
- the screening content includes: no dental treatment; no periodontal disease or caries; no developmental deformity; natural teeth have applicable anatomical characteristics ;
- the information of the subject includes recording the subject’s name, age, gender, race, occupation, birthplace, body type classification, front facial type classification, lateral facial type classification, dental arch morphology classification, central incisor morphology classification, Occlusion classification and wear classification.
- the dental anatomical landmark area editing includes: coordinates, occlusal surface, incisal edge, contour high point line, neck edge, Fissures, contact areas, cusps, cusps, ridges, occlusal areas, and pontic bottoms.
- the dental anatomy landmark area editing unit is used to: edit the incisal margin of the anterior teeth; perform the occlusal surface, cusp, cusp apex, furrow and fissure of the premolar and molar Editing of the occlusal area; for the bridge, the three-dimensional model is closed and the bottom of the bridge is edited.
- the dentition data positioning editing unit uses a network matching algorithm to match the dentition data of each tooth with the position of the corresponding tooth in the three-dimensional model.
- the construction method includes the following steps:
- (1) Record object information Screen out subjects who have not undergone any dental treatment, periodontal disease, caries, developmental deformities, and natural teeth with good anatomical characteristics, and record their name, age, sex, Race, occupation, birthplace, body type classification, frontal facial type classification, lateral facial type classification, dental arch shape classification, central incisor shape classification, occlusal classification, and wear classification.
- Mirror image processing Use the mirror image tool in the 3D design software Materialise Magics to mirror the teeth on the same side to obtain symmetrical teeth data with exactly the same shape and size.
- Figure 5 shows a schematic diagram of mirroring processing.
- Tooth type anatomy landmark area editing use the dental professional database editing software ToothModelEditor to edit the anatomy of each tooth data, including coordinates (Axes), occlusal surface (Chewing surface), and incisal edge (Incisal edge) , Equator, Cervical border, Fissure, Approx contact, Tooth tip (Cusp1-5), Tooth tip (Cusp tips), Ridge (Ridge), Desired occlusion area, bottom of pontic (Bottom) 12 items; due to different anatomical characteristics, the characteristics of the front and rear teeth are different, in which the incisal margin is edited only for the anterior teeth, while the occlusal surface, cusp and apex Only the premolars and molars can be edited in the area of sulcus, fissure and occlusal. Due to the different restoration methods, the editing of crown and pontic is also different. The pontic needs to close the gap at the root, and then fix the bottom of the pontic, which is the
- Positioning and editing of dentition data use the professional dental database editing software exocad DentalCAD to edit the three-dimensional position arrangement of each tooth data, and use the mesh matching algorithm to convert each tooth data to the original dentition data The corresponding tooth body is matched, so as to obtain the three-dimensional position information of the database tooth shape at each moment.
- Figure 7 shows a schematic diagram of dentition data positioning and editing.
- the corresponding natural tooth type database can be obtained through the technical solutions provided in the embodiments, and all tooth type three-dimensional model data in the natural tooth type database can be used in all design dental restoration modules of the software.
- the tooth data of the natural tooth profile database is shown in the figure. It can be clearly seen from the figure that in this embodiment, the designed natural tooth profile database has the characteristics, contours and contours of natural teeth. Texture.
- the database is produced by any of the foregoing embodiments method, and the use method specifically includes the following content:
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Computer Hardware Design (AREA)
- Computer Graphics (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Epidemiology (AREA)
- Radiology & Medical Imaging (AREA)
- Architecture (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Public Health (AREA)
- Primary Health Care (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Evolutionary Computation (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
A method and system for constructing a natural tooth library. The method comprises the following steps: 1. recording information of a subject; 2. obtaining a digital model; 3. segmenting dentition data; 4. trimming a tooth form; 5. performing mirroring processing; 6. performing tooth anatomical marker area editing; 7. performing dentition data location editing; and 8. importing a natural tooth library. According to the method and system, a natural tooth library is constructed, so as to solve the problem that existing dental restoration digital design has unmatched teeth, is single in form, lack of natural form textures, poor in aesthetics and the like; moreover, the natural tooth library constructed with the present method can be applied in any digital restoration design to design crowns, bridges, veneers, inlays, removable partial dentures, complete dentures and the like; furthermore, matched tooth data can be selected according to personal conditions and characteristics of a patient.
Description
本发明涉及生物信息技术领域,具体涉及一种天然牙型数据库的构建方法及***。The invention relates to the technical field of biological information, in particular to a method and system for constructing a natural tooth type database.
口腔修复体的制作是口腔修复治疗中至关重要的一步,随着数字化技术在口腔修复领域的广泛运用,义齿人工牙的制作由蜡型、上瓷、排牙逐渐转变为数字化设计、数控切削和3D打印,医生和技师对于牙体外形的认知和使用也从以前的牙体解剖外形认知转变为三维的数字模型。特别是在在冠桥修复、贴面修复、种植修复以及全口义齿修复中,CAD/CAM的运用非常普及。数字化技术在口腔修复领域的飞速发展得益于其智能、便捷以及高效的特点,义齿整体设计流程包括数字化扫描模型,数字化设计修复体,最后数控切削或3D打印;仅仅只需简单的步骤就能完成修复体的制作,而且大部分工序均由电脑完成,相对于传统义齿加工流程需要30余种加工步骤而言,数字化技术优势非常明显。The production of dental prosthesis is a crucial step in the treatment of dental prosthetics. With the widespread use of digital technology in the field of dental prosthetics, the production of artificial teeth for dentures has gradually changed from wax, porcelain, and tooth arrangement to digital design and CNC cutting. With 3D printing, doctors and technicians' cognition and use of tooth shape has also changed from the previous cognition of tooth anatomy to a three-dimensional digital model. Especially in crown and bridge restoration, veneer restoration, implant restoration, and full denture restoration, the application of CAD/CAM is very popular. The rapid development of digital technology in the field of dental prosthesis is due to its intelligence, convenience and efficiency. The overall design process of dentures includes digital scanning models, digital design of restorations, and finally CNC cutting or 3D printing; only simple steps are required The production of the restoration is completed, and most of the procedures are completed by the computer. Compared with the traditional denture processing process that requires more than 30 processing steps, the advantages of digital technology are very obvious.
在修复体数字化制作的过程中,唯一需要较多人为参与的步骤是数字化设计CAD的环节,必须完成相应的设计才能将其切削或打印成型。目前的数字化设计并非在软件里凭空设计出修复体,而是使用现有的成品牙体数据或牙体三维模型,将其倒入设计界面,完成排列、适当雕刻的处理,进而形成修复体,基本参照牙型数据直接设计成为修复体,所有的牙科专业设计软件内均有牙型数据库(Tooth Library),为设计者提供使用。所以牙型数据库的质量对于修复体设计尤为重要,而最终完成的实体修复体的质量、外形等也直接受到牙型数据库的影响。In the process of digital production of restorations, the only step that requires more human involvement is the digital design of CAD. The corresponding design must be completed before it can be cut or printed. The current digital design does not design the restoration out of thin air in the software, but uses the existing finished tooth data or 3D tooth model to pour it into the design interface, complete the arrangement and appropriate carving processing, and then form the restoration. Basically refer to the tooth profile data to directly design the restoration. All dental professional design software has a tooth profile database (Tooth Library) for designers to use. Therefore, the quality of the tooth profile database is particularly important for restoration design, and the quality and shape of the final solid restoration are also directly affected by the tooth profile database.
但多数牙科专业设计软件的内置牙型数据库多数牙型更适合白种人,而且数量有限、分类较少。而且主流设计软件中的牙型数据库均为人工制作,缺乏天然牙特有纹理。所以现在大多数义齿加工厂所制作的修复体形态单一缺乏个性,很难满足每一个国家地区、每一位病人、医生及技师的需求。所以如何在保证原有数字化义齿加工流程,不增加修复体设计难度和设计步骤的基础上解决上述问题,亟需一种全新的个性化的适合中国人的天然牙型数据库。However, most dental professional design software's built-in tooth shape database is more suitable for white people, and the number is limited and there are fewer classifications. Moreover, the tooth profile database in mainstream design software is made manually, and lacks the unique texture of natural teeth. Therefore, most of the restorations made by denture processing factories have a single shape and lack individuality. It is difficult to meet the needs of every country, every patient, doctor and technician. Therefore, how to solve the above problems on the basis of ensuring the original digital denture processing flow without increasing the difficulty and design steps of the restoration design, there is an urgent need for a new and personalized natural tooth profile database suitable for the Chinese.
发明内容Summary of the invention
本发明所要解决的技术问题是现有的牙型数据库缺乏普遍的适用性,且缺少天然牙特有纹理,难以满足各种不同类型病人及医生的需求,目的在于提供一种天然牙型数据库的构建方法及***,解决上述问题。The technical problem to be solved by the present invention is that the existing tooth type database lacks universal applicability and lacks the unique texture of natural teeth, which is difficult to meet the needs of various types of patients and doctors. The purpose is to provide a construction of a natural tooth type database. Method and system to solve the above problems.
本发明通过下述技术方案实现:The present invention is realized through the following technical solutions:
一种天然牙型数据库的构建方法,包括以下步骤:S1:筛选出受试对象并记录受试对象 的信息;S2:对受试对象上下牙弓的全部天然牙进行扫描并根据扫描结果构建三维模型;S3:将三维模型上的每一颗天然牙都单独分割出来,且分割过程不破坏牙体硬组织形态;S4:对分割出来的天然牙进行修整,去除牙体周围的软组织部分,保留牙体硬组织,并对粗糙的三角面片和扫描缺陷进行光滑处理;S5:对修整过的同侧牙体进行镜像处理,生成形态尺寸相同的对称牙体数据;S6:根据牙齿的类型和部位对对称牙体数据进行牙型解剖学标志区编辑形成牙体数据和桥体数据;S7:将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配,得出每一颗牙齿的位置排列数据;S8:将牙体数据、桥体数据和位置排列数据均匹配于受试对象的信息形成天然牙型数据库。A method for constructing a natural tooth profile database includes the following steps: S1: screening out subjects and recording the subject’s information; S2: scanning all natural teeth of the subject’s upper and lower arches and constructing a three-dimensional based on the scanning results Model; S3: Separate each natural tooth on the three-dimensional model separately, and the segmentation process does not destroy the hard tissue morphology of the tooth; S4: trim the divided natural tooth, remove the soft tissue part around the tooth, and retain Hard tissues of the tooth, and smooth processing of rough triangular faces and scanning defects; S5: mirror image processing of the trimmed tooth on the same side to generate symmetrical tooth data with the same shape and size; S6: according to the type and size of the tooth Edit the dental anatomical landmark area on the symmetrical tooth data to form the tooth data and pontic data; S7: match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model to obtain Position arrangement data of each tooth; S8: match the tooth body data, pontic data and position arrangement data with the information of the test subject to form a natural tooth profile database.
本发明应用时,首先需要数据库的样本,数据库样本的形成需要遵循一定的要求,所以本发明中先筛选出受试对象并记录受试对象的信息,以供后续数据库的生成;然后扫描受试对象上下牙弓的全部天然牙,并根据扫描结果构建三维模型,构建方式可以采用现有的各种辅助软件和工具完成;然后将三维模型上的每一颗天然牙都单独分割出来,在三维模型中是包括有软组织和牙体硬组织的,为了便于将软组织提出,本发明先在这里进行分割便于后续处理;然后对分割出来的牙齿进行修整,修整内容包括去除软组织,并且对扫描和建模中的缺陷进行处理。When the present invention is applied, a sample of the database is first required, and the formation of the database sample needs to follow certain requirements. Therefore, in the present invention, the subject is first screened out and the subject’s information is recorded for subsequent database generation; then the subject is scanned All the natural teeth of the upper and lower arches of the object, and construct a three-dimensional model based on the scanning results. The construction method can be completed by various existing auxiliary software and tools; then each natural tooth on the three-dimensional model is segmented separately, The model includes soft tissues and tooth hard tissues. In order to facilitate the proposal of soft tissues, the present invention first performs segmentation here for subsequent processing; then the segmented teeth are trimmed. The trimming content includes removing soft tissues, and scanning and constructing Deal with defects in the mold.
由于在临床进行义齿制作时,如果义齿本身不对称,不仅会造成牙齿的不美观,也会在植牙后造成一些不利的生理反应,为了避免这种情况发生,本发明创造性的采用了镜像技术对同侧牙体进行镜像处理,这里所说的同侧牙体是指同为左侧的牙或者同为右侧的牙。As the denture itself is not symmetrical during clinical denture production, it will not only cause unsightly teeth, but also cause some unfavorable physiological reactions after dental implantation. In order to avoid this, the present invention creatively adopts mirroring technology. Mirror the teeth on the same side. The teeth on the same side here refer to the teeth on the left side or the teeth on the right side.
然后根据牙齿的类型和部位对对称牙体数据进行牙型解剖学标志区编辑形成牙体数据和桥体数据;由于解剖特征不同,前后牙的特征编辑有所不同,所说义对于不同类型的牙齿要做不同的编辑,而牙齿的部位是指牙冠和桥体,这两者的编辑也有所不同,通过对牙齿类型和部位的细分可以使得数据库更加完善。Then according to the type and position of the tooth, the symmetrical tooth data is edited in the dental anatomical landmark area to form the tooth data and pontic data; due to the different anatomical characteristics, the characteristics of the front and rear teeth are different. The meaning is for different types of teeth. The teeth need to be edited differently, and the part of the tooth refers to the crown and pontic. The editing of the two is also different. The database can be more perfect by subdividing the type and part of the tooth.
当所有牙齿自身的数据都提取完成后,需要对牙齿进行定位,获取每个牙齿的具体三维坐标后才能实现整个一整套牙齿具体组合的完整信息。最后将牙体数据、桥体数据和位置排列数据均匹配于受试对象的信息形成天然牙型数据库;这里说的匹配的意思是,将受试对象的信息和从该受试对象获取的牙体数据、桥体数据和位置排列数据做成一个映射,在实际使用中,当出现新的用户需要进行植牙等牙科治疗的时候,可以将对新用户的特征去比对数据库中受试对象的信息,然后找出最匹配的受试对象,再将最匹配的受试对象牙体数据、桥体数据和位置排列数据提取出来用作治疗参数,可见本发明生成的数据库具有极好的适用性。本发明通过数字化技术,扫描不同人群的健康天然牙体并记录其特征,通过对所得牙型三维建模、数字化设计、三维牙型分析、虚拟牙型雕刻,根据设计软件所需算法进行特定牙体解 剖学编辑,完成天然牙型数据库的构建,此数据库能按照常规设计流程在所有类型的修复设计中导入并使用,可以直接用于数字化设计,提升了义齿加工效率,提升了修复体的美学性能,所设计完成的天然牙型数据库具备天然牙的特点、外形轮廓及纹理。After the data of all the teeth themselves are extracted, the teeth need to be positioned and the specific three-dimensional coordinates of each tooth can be obtained to achieve the complete information of the entire set of specific combinations of teeth. Finally, the tooth data, pontic data, and position arrangement data are all matched with the information of the test subject to form a natural tooth profile database; the matching here means that the information of the test subject is combined with the tooth obtained from the test subject. Volume data, pontic data, and position arrangement data are mapped into a map. In actual use, when a new user needs dental implants and other dental treatments, the characteristics of the new user can be compared to the subjects in the database Then find the most matching test subject, and then extract the best matching test subject’s dental data, pontic data and position arrangement data to be used as treatment parameters. It can be seen that the database generated by the present invention has excellent application Sex. The invention scans the healthy natural teeth of different groups of people and records their characteristics through digital technology. Through the three-dimensional modeling, digital design, three-dimensional dental analysis, virtual dental sculpture, the specific teeth are performed according to the algorithm required by the design software. Body anatomy editing to complete the construction of the natural tooth profile database. This database can be imported and used in all types of restoration designs according to the conventional design process. It can be directly used for digital design, which improves the efficiency of denture processing and improves the aesthetics of the restoration. Performance, the designed natural tooth profile database has the characteristics, contours and textures of natural teeth.
进一步的,步骤S1中:所述筛选内容包括:未经过任何牙体治疗;无牙周病、龋病;无发育畸形;天然牙具有适用的解剖学特点;所述受试对象的信息包括记录受试对象姓名、年龄、性别、种族、职业、出生地、体型分类、正面面型分类、侧面面型分类、牙弓形态分类、中切牙形态分类、咬合分类和磨耗分级。Further, in step S1: the screening content includes: no dental treatment; no periodontal disease or caries; no developmental deformity; natural teeth have applicable anatomical characteristics; the information of the subject includes records Subject's name, age, gender, race, occupation, birthplace, body type classification, frontal facial type classification, lateral facial type classification, dental arch morphology classification, central incisor morphology classification, occlusal classification and wear classification.
本发明应用时,为了保证数据库获取数据的准确性和适用性,需要对受试对象进行明确的筛选内容,而本发明中为了生成数据库后便于匹配,也将记录的受试对象的信息进行了明确。When the present invention is applied, in order to ensure the accuracy and applicability of the data obtained by the database, the test subject needs to be clearly screened. In the present invention, in order to facilitate matching after the database is generated, the recorded information of the test subject is also carried out. clear.
进一步的,步骤S6中:所述牙型解剖学标志区编辑包括:坐标、咬合面、切缘、外形高点线、颈缘、沟裂、接触区、牙尖、牙尖顶点、脊、咬合区域和桥体底部。Further, in step S6: the editing of the dental anatomical landmark area includes: coordinates, occlusal surface, incisal margin, contour high-point line, cervical margin, groove fissure, contact area, tooth cusp, cusp apex, ridge, occlusal Area and bottom of pontic.
本发明应用时,使用牙科专业数据库编辑软件,对每一颗牙体数据进行解剖学编辑,包括坐标(Axes)、咬合面(Chewing surface)、切缘(Incisal edge)、外形高点线(Equator)、颈缘(Cervical border)、沟裂(Fissure)、接触区(Approx contact)、牙尖(Cusp1-5)、牙尖顶点(Cusp tips)、脊(Ridge)、咬合区域(Desired occlusion area)、桥体底部(Bottom)12项;由于解剖特征不同,前后牙的特征编辑有所不同。When the present invention is applied, the dental professional database editing software is used to perform anatomical editing on each tooth data, including coordinates (Axes), occlusal surface (Chewing surface), incisal edge (Incisal edge), and contour high point line (Equator). ), Cervical border, Fissure, Approx contact, Cusp1-5, Cusp tips, Ridge, Desired occlusion area , 12 items at the bottom of the pontic (Bottom); due to the different anatomical characteristics, the characteristics of the front and rear teeth are different.
进一步的,步骤S6包括以下子步骤:对前牙进行切缘的编辑;对前磨牙和磨牙进行咬合面、牙尖、牙尖顶点、沟裂和咬合区域的编辑;对于桥体,将所述三维模型封闭并对桥体底部进行编辑。Further, step S6 includes the following sub-steps: editing the incisal edge of the anterior teeth; editing the occlusal surface, cusp, cusp apex, furrow and occlusal area of the premolar and molar; The 3D model is closed and the bottom of the bridge is edited.
本发明应用时,由于修复方式的不同,牙冠和桥体的编辑也有所不同,桥体需要封闭根方的缺口,然后对桥体的底部,即盖嵴部进行编辑。When the present invention is applied, due to different restoration methods, the editing of the crown and the pontic is also different. The pontic needs to close the gap at the root, and then edit the bottom of the pontic, that is, the crest.
进一步的,步骤S7包括以下子步骤:采用网络匹配算法将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配。Further, step S7 includes the following sub-steps: using a network matching algorithm to match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model.
本发明应用时,使用牙科专业数据库编辑软件,对每一颗牙体数据进行三维位置排列的编辑,通过网格匹配算法,将每一颗牙体数据于原始牙列数据对应牙体进行匹配,从而获得每一刻数据库牙型的三维位置信息。When the present invention is applied, the dental professional database editing software is used to edit the three-dimensional position arrangement of each tooth data, and the mesh matching algorithm is used to match each tooth data with the corresponding tooth of the original dentition data. So as to obtain the three-dimensional position information of the database teeth at every moment.
一种天然牙型数据库的构建***,包括:数据库单元:用于形成、储存和调用天然牙型数据库;筛选单元:用于筛选出受试对象并记录受试对象的信息后储存进数据库单元;三维建模单元:用于对受试对象上下牙弓的全部天然牙进行扫描并根据扫描结果构建三维模型;分割单元:用于将三维模型上的每一颗天然牙都单独分割出来,且分割过程不破坏牙体硬组 织形态;修整单元:用于对分割出来的天然牙进行修整,去除牙体周围的软组织部分,保留牙体硬组织,并对粗糙的三角面片和扫描缺陷进行光滑处理;镜像单元:用于对修整过的同侧牙体进行镜像处理,生成形态尺寸相同的对称牙体数据;牙型解剖学标志区编辑单元:用于根据牙齿的类型和部位对对称牙体数据进行牙型解剖学标志区编辑形成牙体数据和桥体数据;牙列数据定位编辑单元:用于将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配,得出每一颗牙齿的位置排列数据;所述数据库单元将牙体数据、桥体数据和位置排列数据均匹配于受试对象的信息形成天然牙型数据库。A construction system for a natural tooth profile database, including: a database unit: used to form, store and call a natural tooth profile database; a screening unit: used to screen out subjects and record the subject’s information and store them in the database unit; 3D modeling unit: used to scan all the natural teeth of the upper and lower arches of the subject and construct a 3D model according to the scanning results; segmentation unit: used to separate each natural tooth on the 3D model and segment it The process does not destroy the hard tissue morphology of the tooth; the trimming unit: used to trim the segmented natural tooth, remove the soft tissue around the tooth, preserve the hard tissue of the tooth, and smoothly treat the rough triangle surface and scanning defects ; Mirror unit: used to mirror the trimmed teeth on the same side to generate symmetrical tooth data with the same shape and size; dental anatomy landmark area editing unit: used to align the symmetrical tooth data according to the type and location of the tooth Edit the dental anatomy landmark area to form tooth data and pontic data; dentition data positioning editing unit: used to match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model to obtain The position arrangement data of each tooth is obtained; the database unit matches the tooth body data, pontic data and position arrangement data with the information of the test subject to form a natural tooth shape database.
进一步的,所述筛选单元中:所述筛选内容包括:未经过任何牙体治疗;无牙周病、龋病;无发育畸形;天然牙具有适用的解剖学特点;所述受试对象的信息包括记录受试对象姓名、年龄、性别、种族、职业、出生地、体型分类、正面面型分类、侧面面型分类、牙弓形态分类、中切牙形态分类、咬合分类和磨耗分级。Further, in the screening unit: the screening content includes: not undergoing any dental treatment; no periodontal disease or caries; no developmental deformities; natural teeth with applicable anatomical characteristics; information about the subject Including recording the subject’s name, age, gender, race, occupation, birthplace, body type classification, frontal facial type classification, lateral facial type classification, dental arch shape classification, central incisor shape classification, occlusal classification and wear classification.
进一步的,所述牙型解剖学标志区编辑单元中:所述牙型解剖学标志区编辑包括:坐标、咬合面、切缘、外形高点线、颈缘、沟裂、接触区、牙尖、牙尖顶点、脊、咬合区域和桥体底部。Further, in the dental anatomical landmark area editing unit: the dental anatomical landmark area editing includes: coordinates, occlusal surface, incisal margin, contour high-point line, cervical margin, groove fissure, contact area, tooth tip , Apex, ridge, occlusal area and bottom of pontic.
进一步的,牙型解剖学标志区编辑单元用于:对前牙进行切缘的编辑;对前磨牙和磨牙进行咬合面、牙尖、牙尖顶点、沟裂和咬合区域的编辑;对于桥体,将所述三维模型封闭并对桥体底部进行编辑。Further, the dental anatomy landmark area editing unit is used to: edit the incisal edge of the anterior teeth; edit the occlusal surface, cusp, cusp apex, groove and occlusal area of the premolar and molar; for the pontic To close the three-dimensional model and edit the bottom of the bridge.
进一步的,所述牙列数据定位编辑单元采用网络匹配算法将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配。Further, the dentition data positioning editing unit uses a network matching algorithm to match the dentition data of each tooth with the position of the corresponding tooth in the three-dimensional model.
本发明与现有技术相比,具有如下的优点和有益效果:Compared with the prior art, the present invention has the following advantages and beneficial effects:
1、本发明一种天然牙型数据库的构建方法及***,通过数字化技术,扫描不同人群的健康天然牙体并记录其特征,通过对所得牙型三维建模、数字化设计、三维牙型分析、虚拟牙型雕刻,根据设计软件所需算法进行特定牙体解剖学编辑,完成天然牙型数据库的构建,此数据库能按照常规设计流程在所有类型的修复设计中导入并使用,可以直接用于数字化设计,提升了义齿加工效率,提升了修复体的美学性能,所设计完成的天然牙型数据库具备天然牙的特点、外形轮廓及纹理;1. A method and system for constructing a natural tooth profile database of the present invention scans healthy natural teeth of different groups of people and records their characteristics through digital technology, and through 3D modeling, digital design, 3D tooth profile analysis, Virtual tooth shape carving, specific tooth anatomy editing according to the algorithm required by the design software, complete the construction of the natural tooth shape database, this database can be imported and used in all types of restoration designs according to the conventional design process, and can be directly used for digitization The design improves the efficiency of denture processing and the aesthetic performance of the restoration. The designed natural tooth profile database has the characteristics, contours and textures of natural teeth;
2、本发明一种天然牙型数据库的构建方法及***,天然牙型数据库的使用,设计等所有步骤和方法与传统数字化设计完全一样,操作简单,设计方便快捷;2. A method and system for constructing a natural tooth profile database of the present invention. All steps and methods such as the use and design of the natural tooth profile database are exactly the same as the traditional digital design, with simple operation and convenient and quick design;
3、本发明一种天然牙型数据库的构建方法及***,天然牙型数据库的选择根据病例及患者的情况,与受试对象的信息相匹配,选择出最适合该病例的个性化天然牙型;3. A method and system for constructing a natural tooth profile database according to the present invention. The selection of the natural tooth profile database is based on the case and patient's conditions, matching the information of the subject, and selecting the most suitable individualized natural tooth profile for the case ;
4、本发明一种天然牙型数据库的构建方法及***,天然牙型数据库兼容性强,能在设计 软件中的所有模块中完成修复体的设计,包括冠、桥、贴面、嵌体、可摘局部义齿以及全口义齿;4. A method and system for constructing a natural tooth profile database of the present invention. The natural tooth profile database has strong compatibility and can complete the design of restorations in all modules in the design software, including crowns, bridges, veneers, inlays, Removable partial dentures and complete dentures;
5、本发明一种天然牙型数据库的构建方法及***,解决了数字化修复体缺乏个性化元素的问题,为修复体设计提供更多,更适合亚洲人的牙型选择。5. A method and system for constructing a natural tooth profile database of the present invention solves the problem of the lack of personalized elements in digital restorations, provides more restoration designs, and is more suitable for Asian tooth type selection.
此处所说明的附图用来提供对本发明实施例的进一步理解,构成本申请的一部分,并不构成对本发明实施例的限定。在附图中:The drawings described here are used to provide a further understanding of the embodiments of the present invention, constitute a part of the application, and do not constitute a limitation to the embodiments of the present invention. In the attached picture:
图1为本发明步骤示意图;Figure 1 is a schematic diagram of the steps of the present invention;
图2为本发明扫描获取的三维模型示意图;Figure 2 is a schematic diagram of a three-dimensional model obtained by scanning in the present invention;
图3为本发明分割牙列示意图;Figure 3 is a schematic diagram of the segmented dentition of the present invention;
图4为本发明修整牙体形态示意图;Figure 4 is a schematic diagram of the modified tooth morphology of the present invention;
图5为本发明镜像处理示意图;Figure 5 is a schematic diagram of mirroring processing of the present invention;
图6为本发明牙型解剖学标志区编辑示意图;Fig. 6 is a schematic diagram of editing the dental anatomy landmark area of the present invention;
图7为本发明牙列数据定位编辑示意图;7 is a schematic diagram of positioning and editing dentition data of the present invention;
图8为本发明天然牙型数据库在固定修复数字化设计的应用示意图;Figure 8 is a schematic diagram of the application of the natural tooth profile database of the present invention in the digital design of fixed restorations;
图9为本发明天然牙型数据库在活动修复数字化设计的应用示意图;Figure 9 is a schematic diagram of the application of the natural tooth profile database of the present invention in the digital design of active restorations;
图10为本发明成型数据库中牙齿侧视图;Figure 10 is a side view of teeth in the shaping database of the present invention;
图11为本发明成型数据库中牙齿俯视图。Figure 11 is a top view of the teeth in the shaping database of the present invention.
为使本发明的目的、技术方案和优点更加清楚明白,下面结合实施例和附图,对本发明作进一步的详细说明,本发明的示意性实施方式及其说明仅用于解释本发明,并不作为对本发明的限定。In order to make the objectives, technical solutions, and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the embodiments and drawings. The exemplary embodiments of the present invention and the description thereof are only used to explain the present invention, not As a limitation of the present invention.
实施例Example
如图1所示,本发明一种天然牙型数据库的构建方法及***,包括以下步骤:S1:筛选出受试对象并记录受试对象的信息;S2:对受试对象上下牙弓的全部天然牙进行扫描并根据扫描结果构建三维模型;S3:将三维模型上的每一颗天然牙都单独分割出来,且分割过程不破坏牙体硬组织形态;S4:对分割出来的天然牙进行修整,去除牙体周围的软组织部分,保留牙体硬组织,并对粗糙的三角面片和扫描缺陷进行光滑处理;S5:对修整过的同侧牙体进行镜像处理,生成形态尺寸相同的对称牙体数据;S6:根据牙齿的类型和部位对对称牙体数据进行牙型解剖学标志区编辑形成牙体数据和桥体数据;S7:将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配,得出每一颗牙齿的位置排列数据;S8:将牙体数据、 桥体数据和位置排列数据均匹配于受试对象的信息形成天然牙型数据库。As shown in Figure 1, a method and system for constructing a natural tooth profile database of the present invention includes the following steps: S1: screening out subjects and recording the subject’s information; S2: checking all the upper and lower arches of the subject Scan the natural teeth and construct a three-dimensional model based on the scan results; S3: separate each natural tooth on the three-dimensional model separately, and the segmentation process does not destroy the hard tissue morphology of the tooth; S4: trim the segmented natural tooth , Remove the soft tissue around the tooth, retain the hard tissue of the tooth, and smoothly process the rough triangular facets and scanning defects; S5: mirror the trimmed tooth on the same side to generate a symmetrical tooth with the same shape and size Volume data; S6: According to the type and position of the tooth, edit the dental anatomical landmark area to form the dental data and pontic data; S7: Combine the dental data of each tooth with the three-dimensional model Match the position of the corresponding tooth to obtain the position arrangement data of each tooth; S8: match the tooth data, pontic data and position arrangement data with the information of the test subject to form a natural tooth profile database.
本实施例实施时,首先需要数据库的样本,数据库样本的形成需要遵循一定的要求,所以本发明中先筛选出受试对象并记录受试对象的信息,以供后续数据库的生成;然后扫描受试对象上下牙弓的全部天然牙,并根据扫描结果构建三维模型,构建方式可以采用现有的各种辅助软件和工具完成;然后将三维模型上的每一颗天然牙都单独分割出来,在三维模型中是包括有软组织和牙体硬组织的,为了便于将软组织提出,本发明先在这里进行分割便于后续处理;然后对分割出来的牙齿进行修整,修整内容包括去除软组织,并且对扫描和建模中的缺陷进行处理。In the implementation of this embodiment, a sample of the database is first required, and the formation of the database sample needs to follow certain requirements. Therefore, in the present invention, the subject is first screened out and the subject’s information is recorded for subsequent database generation; then the subject is scanned. All the natural teeth of the upper and lower arches of the test object are constructed, and a 3D model is constructed according to the scanning results. The construction method can be completed by using various existing auxiliary software and tools; then each natural tooth on the 3D model is separately segmented, The three-dimensional model includes soft tissue and tooth hard tissue. In order to facilitate the proposal of soft tissue, the present invention first performs segmentation here for subsequent processing; then the segmented teeth are trimmed. The trimming content includes removing soft tissue, and scanning and Defects in modeling are dealt with.
由于在临床进行义齿制作时,如果义齿本身不对称,不仅会造成牙齿的不美观,也会在植牙后造成一些不利的生理反应,为了避免这种情况发生,本发明创造性的采用了镜像技术对同侧牙体进行镜像处理,这里所说的同侧牙体是指同为左侧的牙或者同为右侧的牙。As the denture itself is not symmetrical during clinical denture production, it will not only cause unsightly teeth, but also cause some unfavorable physiological reactions after dental implantation. In order to avoid this, the present invention creatively adopts mirroring technology. Mirror the teeth on the same side. The teeth on the same side here refer to the teeth on the left side or the teeth on the right side.
然后根据牙齿的类型和部位对对称牙体数据进行牙型解剖学标志区编辑形成牙体数据和桥体数据;由于解剖特征不同,前后牙的特征编辑有所不同,所说义对于不同类型的牙齿要做不同的编辑,而牙齿的部位是指牙冠和桥体,这两者的编辑也有所不同,通过对牙齿类型和部位的细分可以使得数据库更加完善。Then according to the type and position of the tooth, the symmetrical tooth data is edited in the dental anatomical landmark area to form the tooth data and pontic data; due to the different anatomical characteristics, the characteristics of the front and rear teeth are different. The meaning is for different types of teeth. The teeth need to be edited differently, and the part of the tooth refers to the crown and pontic. The editing of the two is also different. The database can be more perfect by subdividing the type and part of the tooth.
当所有牙齿自身的数据都提取完成后,需要对牙齿进行定位,获取每个牙齿的具体三维坐标后才能实现整个一整套牙齿具体组合的完整信息。最后将牙体数据、桥体数据和位置排列数据均匹配于受试对象的信息形成天然牙型数据库;这里说的匹配的意思是,将受试对象的信息和从该受试对象获取的牙体数据、桥体数据和位置排列数据做成一个映射,在实际使用中,当出现新的用户需要进行植牙等牙科治疗的时候,可以将对新用户的特征去比对数据库中受试对象的信息,然后找出最匹配的受试对象,再将最匹配的受试对象牙体数据、桥体数据和位置排列数据提取出来用作治疗参数,可见本发明生成的数据库具有极好的适用性。本发明通过数字化技术,扫描不同人群的健康天然牙体并记录其特征,通过对所得牙型三维建模、数字化设计、三维牙型分析、虚拟牙型雕刻,根据设计软件所需算法进行特定牙体解剖学编辑,完成天然牙型数据库的构建,此数据库能按照常规设计流程在所有类型的修复设计中导入并使用,可以直接用于数字化设计,提升了义齿加工效率,提升了修复体的美学性能,所设计完成的天然牙型数据库具备天然牙的特点、外形轮廓及纹理。After the data of all the teeth themselves are extracted, the teeth need to be positioned and the specific three-dimensional coordinates of each tooth can be obtained to achieve the complete information of the entire set of specific combinations of teeth. Finally, the tooth data, pontic data, and position arrangement data are all matched with the information of the test subject to form a natural tooth profile database; the matching here means that the information of the test subject is combined with the tooth obtained from the test subject. Volume data, pontic data, and position arrangement data are mapped into a map. In actual use, when a new user needs dental implants and other dental treatments, the characteristics of the new user can be compared to the subjects in the database Then find the most matching test subject, and then extract the best matching test subject’s dental data, pontic data and position arrangement data to be used as treatment parameters. It can be seen that the database generated by the present invention has excellent application Sex. The invention scans the healthy natural teeth of different groups of people and records their characteristics through digital technology. Through the three-dimensional modeling, digital design, three-dimensional dental analysis, virtual dental sculpture, the specific teeth are performed according to the algorithm required by the design software. Body anatomy editing to complete the construction of the natural tooth profile database. This database can be imported and used in all types of restoration designs according to the conventional design process. It can be directly used for digital design, which improves the efficiency of denture processing and improves the aesthetics of the restoration. Performance, the designed natural tooth profile database has the characteristics, contours and textures of natural teeth.
为了进一步的说明本实施例的工作过程,步骤S1中:所述筛选内容包括:未经过任何牙体治疗;无牙周病、龋病;无发育畸形;天然牙具有适用的解剖学特点;所述受试对象的信息包括记录受试对象姓名、年龄、性别、种族、职业、出生地、体型分类、正面面型分类、侧面面型分类、牙弓形态分类、中切牙形态分类、咬合分类和磨耗分级。In order to further illustrate the working process of this embodiment, in step S1: the screening content includes: no dental treatment; no periodontal disease or caries; no developmental deformity; natural teeth have applicable anatomical characteristics; The information of the subject includes recording the subject’s name, age, gender, race, occupation, place of birth, body type, frontal facial type, lateral facial type, dental arch morphology, central incisor morphology, and occlusion And wear classification.
本实施例实施时,为了保证数据库获取数据的准确性和适用性,需要对受试对象进行明确的筛选内容,而本发明中为了生成数据库后便于匹配,也将记录的受试对象的信息进行了明确。During the implementation of this embodiment, in order to ensure the accuracy and applicability of the data obtained by the database, the test subject needs to be clearly screened. In the present invention, in order to facilitate matching after the database is generated, the recorded information of the test subject is also processed. Made clear.
为了进一步的说明本实施例的工作过程,步骤S6中:所述牙型解剖学标志区编辑包括:坐标、咬合面、切缘、外形高点线、颈缘、沟裂、接触区、牙尖、牙尖顶点、脊、咬合区域和桥体底部。In order to further illustrate the working process of this embodiment, in step S6: the dental anatomical landmark area editing includes: coordinates, occlusal surface, incisal margin, contour high-point line, cervical margin, groove fissure, contact area, tooth tip , Apex, ridge, occlusal area and bottom of pontic.
本实施例实施时,使用牙科专业数据库编辑软件,对每一颗牙体数据进行解剖学编辑,包括坐标(Axes)、咬合面(Chewing surface)、切缘(Incisal edge)、外形高点线(Equator)、颈缘(Cervical border)、沟裂(Fissure)、接触区(Approx contact)、牙尖(Cusp1-5)、牙尖顶点(Cusp tips)、脊(Ridge)、咬合区域(Desired occlusion area)、桥体底部(Bottom)12项;由于解剖特征不同,前后牙的特征编辑有所不同。In the implementation of this embodiment, the dental professional database editing software is used to perform anatomical editing on each tooth data, including coordinates (Axes), occlusal surface (Chewing surface), incisal edge (Incisal edge), and contour high point line ( Equator, Cervical border, Fissure, Approx contact, Cusp1-5, Cusptips, Ridge, Desired occlusion area ), 12 items at the bottom of the bridge (Bottom); due to different anatomical characteristics, the characteristics of the front and rear teeth are different.
为了进一步的说明本实施例的工作过程,步骤S6包括以下子步骤:对前牙进行切缘的编辑;对前磨牙和磨牙进行咬合面、牙尖、牙尖顶点、沟裂和咬合区域的编辑;对于桥体,将所述三维模型封闭并对桥体底部进行编辑。In order to further illustrate the working process of this embodiment, step S6 includes the following sub-steps: editing the incisal margin of the anterior teeth; editing the occlusal surface, cusp, cusp apex, furrow and occlusal area of the premolar and molar ; For the bridge, close the three-dimensional model and edit the bottom of the bridge.
本实施例实施时,由于修复方式的不同,牙冠和桥体的编辑也有所不同,桥体需要封闭根方的缺口,然后对桥体的底部,即盖嵴部进行编辑。During the implementation of this embodiment, due to the different restoration methods, the editing of the crown and the pontic is also different. The pontic needs to close the gap at the root, and then edit the bottom of the pontic, that is, the crest.
为了进一步的说明本实施例的工作过程,步骤S7包括以下子步骤:采用网络匹配算法将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配。In order to further explain the working process of this embodiment, step S7 includes the following sub-steps: using a network matching algorithm to match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model.
本实施例实施时,使用牙科专业数据库编辑软件,对每一颗牙体数据进行三维位置排列的编辑,通过网格匹配算法,将每一颗牙体数据于原始牙列数据对应牙体进行匹配,从而获得每一刻数据库牙型的三维位置信息。In the implementation of this embodiment, the professional dental database editing software is used to edit the three-dimensional position arrangement of each tooth data, and the mesh matching algorithm is used to match each tooth data with the corresponding tooth of the original dentition data. , So as to obtain the three-dimensional position information of the database teeth at every moment.
一种天然牙型数据库的构建***,包括:数据库单元:用于形成、储存和调用天然牙型数据库;筛选单元:用于筛选出受试对象并记录受试对象的信息后储存进数据库单元;三维建模单元:用于对受试对象上下牙弓的全部天然牙进行扫描并根据扫描结果构建三维模型;分割单元:用于将三维模型上的每一颗天然牙都单独分割出来,且分割过程不破坏牙体硬组织形态;修整单元:用于对分割出来的天然牙进行修整,去除牙体周围的软组织部分,保留牙体硬组织,并对粗糙的三角面片和扫描缺陷进行光滑处理;镜像单元:用于对修整过的同侧牙体进行镜像处理,生成形态尺寸相同的对称牙体数据;牙型解剖学标志区编辑单元:用于根据牙齿的类型和部位对对称牙体数据进行牙型解剖学标志区编辑形成牙体数据和桥体数据;牙列数据定位编辑单元:用于将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配,得出每一颗牙齿的位置排列数据;所述数据库单元将牙体数据、桥体数据和位 置排列数据均匹配于受试对象的信息形成天然牙型数据库。A construction system for a natural tooth profile database, including: a database unit: used to form, store and call a natural tooth profile database; a screening unit: used to screen out subjects and record the subject’s information and store them in the database unit; 3D modeling unit: used to scan all the natural teeth of the upper and lower arches of the subject and construct a 3D model according to the scanning results; segmentation unit: used to separate each natural tooth on the 3D model and segment it The process does not destroy the hard tissue morphology of the tooth; the trimming unit: used to trim the segmented natural tooth, remove the soft tissue around the tooth, preserve the hard tissue of the tooth, and smoothly treat the rough triangle surface and scanning defects ; Mirror unit: used to mirror the trimmed teeth on the same side to generate symmetrical tooth data with the same shape and size; dental anatomy landmark area editing unit: used to align the symmetrical tooth data according to the type and location of the tooth Edit the dental anatomy landmark area to form tooth data and pontic data; dentition data positioning editing unit: used to match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model to obtain The position arrangement data of each tooth is obtained; the database unit matches the tooth body data, pontic data and position arrangement data with the information of the test subject to form a natural tooth shape database.
为了进一步的说明本实施例的工作过程,所述筛选单元中:所述筛选内容包括:未经过任何牙体治疗;无牙周病、龋病;无发育畸形;天然牙具有适用的解剖学特点;所述受试对象的信息包括记录受试对象姓名、年龄、性别、种族、职业、出生地、体型分类、正面面型分类、侧面面型分类、牙弓形态分类、中切牙形态分类、咬合分类和磨耗分级。In order to further illustrate the working process of this embodiment, in the screening unit: the screening content includes: no dental treatment; no periodontal disease or caries; no developmental deformity; natural teeth have applicable anatomical characteristics ; The information of the subject includes recording the subject’s name, age, gender, race, occupation, birthplace, body type classification, front facial type classification, lateral facial type classification, dental arch morphology classification, central incisor morphology classification, Occlusion classification and wear classification.
为了进一步的说明本实施例的工作过程,所述牙型解剖学标志区编辑单元中:所述牙型解剖学标志区编辑包括:坐标、咬合面、切缘、外形高点线、颈缘、沟裂、接触区、牙尖、牙尖顶点、脊、咬合区域和桥体底部。In order to further illustrate the working process of this embodiment, in the dental anatomical landmark area editing unit: the dental anatomical landmark area editing includes: coordinates, occlusal surface, incisal edge, contour high point line, neck edge, Fissures, contact areas, cusps, cusps, ridges, occlusal areas, and pontic bottoms.
为了进一步的说明本实施例的工作过程,牙型解剖学标志区编辑单元用于:对前牙进行切缘的编辑;对前磨牙和磨牙进行咬合面、牙尖、牙尖顶点、沟裂和咬合区域的编辑;对于桥体,将所述三维模型封闭并对桥体底部进行编辑。In order to further explain the working process of this embodiment, the dental anatomy landmark area editing unit is used to: edit the incisal margin of the anterior teeth; perform the occlusal surface, cusp, cusp apex, furrow and fissure of the premolar and molar Editing of the occlusal area; for the bridge, the three-dimensional model is closed and the bottom of the bridge is edited.
为了进一步的说明本实施例的工作过程,所述牙列数据定位编辑单元采用网络匹配算法将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配。To further illustrate the working process of this embodiment, the dentition data positioning editing unit uses a network matching algorithm to match the dentition data of each tooth with the position of the corresponding tooth in the three-dimensional model.
为了具体的说明本实施例的工作过程,构建方法包括以下步骤:In order to specifically illustrate the working process of this embodiment, the construction method includes the following steps:
(1)记录对象信息:筛选出未经过任何牙体治疗,无牙周病、龋病,无发育畸形的且天然牙具有较好解剖学特点的受试对象,记录其姓名、年龄、性别、种族、职业、出生地、体型分类、正面面型分类、侧面面型分类、牙弓形态分类、中切牙形态分类、咬合分类以及磨耗分级。(1) Record object information: Screen out subjects who have not undergone any dental treatment, periodontal disease, caries, developmental deformities, and natural teeth with good anatomical characteristics, and record their name, age, sex, Race, occupation, birthplace, body type classification, frontal facial type classification, lateral facial type classification, dental arch shape classification, central incisor shape classification, occlusal classification, and wear classification.
(2)获取数字模型:使用3shape口内扫描仪扫描上下牙弓全部天然牙,然后将其导出为通用三维格式文件。如图2所示为获取数字化模型示意图。(2) Acquire a digital model: use the 3shape intraoral scanner to scan all the natural teeth of the upper and lower arches, and then export them to a common 3D format file. Figure 2 shows a schematic diagram of obtaining a digital model.
(3)分割牙列数据:在不破坏任何牙体硬组织形态的前提下使用三维设计软件Materialise Magics的切割工具将牙列上的每一颗天然牙进行分割,切割间隙设置为0,每一颗牙分别保存。如图3所示为分割牙列示意图。(3) Segmentation of dentition data: Use the cutting tool of the 3D design software Materialise Magics to segment each natural tooth on the dentition without destroying any hard tissue morphology of the tooth. The cutting gap is set to 0, each The teeth are kept separately. Figure 3 shows a schematic diagram of the segmented dentition.
(4)修整牙体形态:在不破坏任何牙体硬组织形态的前提下使用三维设计软件exocad DentalCAD的雕刻工具,去除牙体周围的软组织部分,保留硬组织,并对一些粗糙的三角面片及扫描缺陷进行光滑处理。如图4所示为修整牙体形态示意图。(4) Trimming the morphology of the tooth: without destroying any hard tissue morphology of the tooth, use the 3D design software exocad DentalCAD's engraving tool to remove the soft tissue around the tooth, retain the hard tissue, and take some rough triangular faces And scan defects for smooth processing. Figure 4 shows a schematic diagram of the modified tooth morphology.
(5)镜像处理:使用三维设计软件Materialise Magics中的镜像工具,对同侧牙体进行镜像处理,获得形态大小完全相同的对称牙体数据。如图5所示为镜像处理示意图。(5) Mirror image processing: Use the mirror image tool in the 3D design software Materialise Magics to mirror the teeth on the same side to obtain symmetrical teeth data with exactly the same shape and size. Figure 5 shows a schematic diagram of mirroring processing.
(6)牙型解剖学标志区编辑:使用牙科专业数据库编辑软件ToothModelEditor,对每一颗牙体数据进行解剖学编辑,包括坐标(Axes)、咬合面(Chewing surface)、切缘(Incisal edge)、外形高点线(Equator)、颈缘(Cervical border)、沟裂(Fissure)、接触区(Approx contact)、 牙尖(Cusp1-5)、牙尖顶点(Cusp tips)、脊(Ridge)、咬合区域(Desired occlusion area)、桥体底部(Bottom)12项;由于解剖特征不同,前后牙的特征编辑有所不同,其中切缘只有前牙才编辑,而咬合面、牙尖、牙尖顶点、沟裂、咬合区域只有前磨牙和磨牙才编辑;由于修复方式的不同,牙冠和桥体的编辑也有所不同,桥体需要封闭根方的缺口,然后对桥体的底部,即盖嵴部进行编辑。如图6所示为牙型解剖学标志区编辑示意图。(6) Tooth type anatomy landmark area editing: use the dental professional database editing software ToothModelEditor to edit the anatomy of each tooth data, including coordinates (Axes), occlusal surface (Chewing surface), and incisal edge (Incisal edge) , Equator, Cervical border, Fissure, Approx contact, Tooth tip (Cusp1-5), Tooth tip (Cusp tips), Ridge (Ridge), Desired occlusion area, bottom of pontic (Bottom) 12 items; due to different anatomical characteristics, the characteristics of the front and rear teeth are different, in which the incisal margin is edited only for the anterior teeth, while the occlusal surface, cusp and apex Only the premolars and molars can be edited in the area of sulcus, fissure and occlusal. Due to the different restoration methods, the editing of crown and pontic is also different. The pontic needs to close the gap at the root, and then fix the bottom of the pontic, which is the crest. Department for editing. Figure 6 shows the editing diagram of the dental anatomy landmark area.
(7)牙列数据定位编辑:使用牙科专业数据库编辑软件exocad DentalCAD,对每一颗牙体数据进行三维位置排列的编辑,通过网格匹配算法,将每一颗牙体数据于原始牙列数据对应牙体进行匹配,从而获得每一刻数据库牙型的三维位置信息。如图7所示为牙列数据定位编辑示意图。(7) Positioning and editing of dentition data: use the professional dental database editing software exocad DentalCAD to edit the three-dimensional position arrangement of each tooth data, and use the mesh matching algorithm to convert each tooth data to the original dentition data The corresponding tooth body is matched, so as to obtain the three-dimensional position information of the database tooth shape at each moment. Figure 7 shows a schematic diagram of dentition data positioning and editing.
(8)天然牙型数据库导入:所有编辑完成后,我们可以获得三种数据,分别为牙体数据、桥体数据和位置排列数据,将这三种数据的每个文件放于三个文件夹中,文件夹以检索信息命名,然后牙体数据存于“library-teeth”文件夹中,将桥体数据存于“library-pontics”文件夹中,位置排列数据存于“library-metadata”文件夹中;设计时在牙型数据库选择界面选择所命名文件夹的名字并载入,就可以载入牙型数据。(8) Import of natural tooth type database: After all editing is completed, we can obtain three kinds of data, namely tooth data, pontic data and position arrangement data, and put each file of these three kinds of data in three folders , The folder is named after the retrieval information, and then the tooth data is stored in the "library-teeth" folder, the pontics data is stored in the "library-pontics" folder, and the positional data is stored in the "library-metadata" file In the folder; during design, select the name of the named folder in the tooth profile database selection interface and load, then the tooth profile data can be loaded.
通过实施例提供的技术方案就能得到相应的天然牙型数据库,该天然牙型数据库内的所有牙型三维模型数据可以在该软件的所有设计牙修复体模块中使用。The corresponding natural tooth type database can be obtained through the technical solutions provided in the embodiments, and all tooth type three-dimensional model data in the natural tooth type database can be used in all design dental restoration modules of the software.
如图10和图11所示,天然牙型数据库的牙齿数据见图,可以从图中清晰的看到,本实施例中,所设计完成的天然牙型数据库具备天然牙的特点、外形轮廓及纹理。As shown in Figure 10 and Figure 11, the tooth data of the natural tooth profile database is shown in the figure. It can be clearly seen from the figure that in this embodiment, the designed natural tooth profile database has the characteristics, contours and contours of natural teeth. Texture.
为了说明本实施例产生的数据库使用的效果,数据库是由前述任一实施例方法制作得到的,该使用方法具体包括以下内容:In order to illustrate the effect of the use of the database generated in this embodiment, the database is produced by any of the foregoing embodiments method, and the use method specifically includes the following content:
(1)在固定修复数字化设计的应用:在完成代型边缘线和粘接间隙的设计后即可载入天然牙数据库,然后按照常规设计步骤,排列牙齿、计算边缘、调整触点和咬合,最后精修形成最终修复体。如图8所示为天然牙型数据库在固定修复数字化设计的应用。(1) Application in the digital design of fixed restoration: After completing the design of the edge line and the bonding gap, the natural tooth database can be loaded, and then follow the conventional design steps to arrange the teeth, calculate the edges, adjust the contacts and occlusion, Finally, it is refined to form the final restoration. Figure 8 shows the application of the natural tooth profile database in the digital design of fixed restorations.
(2)在活动修复数字化设计的应用:颗直接载入天然牙型数据库,然后进行排牙、咬合调整、邻接区调整、绘制基托范围,就能完成最终修复体。如图9所示为天然牙型数据库在活动修复数字化设计的应用。(2) Application in the digital design of active restorations: load the teeth directly into the natural tooth profile database, and then arrange the teeth, adjust the occlusion, adjust the adjacent area, and draw the base area to complete the final restoration. Figure 9 shows the application of the natural tooth profile database in the digital design of active restorations.
以上所述的具体实施方式,对本发明的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施方式而已,并不用于限定本发明的保护范围,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in further detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection, any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention shall be included in the scope of protection of the present invention.
Claims (10)
- 一种天然牙型数据库的构建方法,其特征在于,包括以下步骤:A method for constructing a natural tooth type database is characterized in that it comprises the following steps:S1:筛选出受试对象并记录受试对象的信息;S1: Screen out the subject and record the subject’s information;S2:对受试对象上下牙弓的全部天然牙进行扫描并根据扫描结果构建三维模型;S2: Scan all natural teeth of the subject's upper and lower arches and construct a three-dimensional model according to the scan results;S3:将三维模型上的每一颗天然牙都单独分割出来,且分割过程不破坏牙体硬组织形态;S3: Separate each natural tooth on the three-dimensional model separately, and the segmentation process does not destroy the hard tissue morphology of the tooth;S4:对分割出来的天然牙进行修整,去除牙体周围的软组织部分,保留牙体硬组织,并对粗糙的三角面片和扫描缺陷进行光滑处理;S4: Trimming the segmented natural tooth, removing the soft tissue around the tooth, retaining the hard tissue of the tooth, and smoothing the rough triangular facets and scanning defects;S5:对修整过的同侧牙体进行镜像处理,生成形态尺寸相同的对称牙体数据;S5: Perform mirror image processing on the trimmed tooth on the same side to generate symmetric tooth data with the same shape and size;S6:根据牙齿的类型和部位对对称牙体数据进行牙型解剖学标志区编辑形成牙体数据和桥体数据;S6: According to the type and position of the tooth, edit the dental anatomical landmark area to form the dental data and pontic data;S7:将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配,得出每一颗牙齿的位置排列数据;S7: Match the tooth body data of each tooth with the position of the corresponding tooth body in the three-dimensional model to obtain the position arrangement data of each tooth;S8:将牙体数据、桥体数据和位置排列数据均匹配于受试对象的信息形成天然牙型数据库。S8: Match the tooth data, pontic data and position arrangement data with the information of the test subject to form a natural tooth profile database.
- 根据权利要求1所述的一种天然牙型数据库的构建方法,其特征在于,步骤S1中:The method for constructing a natural tooth type database according to claim 1, wherein in step S1:所述筛选内容包括:未经过任何牙体治疗;无牙周病、龋病;无发育畸形;天然牙具有适用的解剖学特点;The screening content includes: no dental treatment; no periodontal disease or caries; no developmental deformities; natural teeth with applicable anatomical characteristics;所述受试对象的信息包括记录受试对象姓名、年龄、性别、种族、职业、出生地、体型分类、正面面型分类、侧面面型分类、牙弓形态分类、中切牙形态分类、咬合分类和磨耗分级。The information of the subject includes recording the subject’s name, age, gender, race, occupation, place of birth, body type classification, front facial type classification, lateral facial type classification, dental arch morphology classification, central incisor morphology classification, occlusion Classification and wear classification.
- 根据权利要求1所述的一种天然牙型数据库的构建方法,其特征在于,步骤S6中:The method for constructing a natural tooth type database according to claim 1, wherein in step S6:所述牙型解剖学标志区编辑包括:坐标、咬合面、切缘、外形高点线、颈缘、沟裂、接触区、牙尖、牙尖顶点、脊、咬合区域和桥体底部。The editing of the dental anatomical landmark area includes: coordinates, occlusal surface, incisal edge, contour high point line, neck edge, groove fissure, contact area, tooth cusp, tooth apex, ridge, occlusal area and pontic bottom.
- 根据权利要求3所述的一种天然牙型数据库的构建方法,其特征在于,步骤S6包括以下子步骤:The method for constructing a natural tooth type database according to claim 3, wherein step S6 includes the following sub-steps:对前牙进行切缘的编辑;Edit the margin of the front teeth;对前磨牙和磨牙进行咬合面、牙尖、牙尖顶点、沟裂和咬合区域的编辑;Edit the occlusal surface, cusp, apex, furrow and occlusal area of premolars and molars;对于桥体,将所述三维模型封闭并对桥体底部进行编辑。For the bridge, the three-dimensional model is closed and the bottom of the bridge is edited.
- 根据权利要求1所述的一种天然牙型数据库的构建方法,其特征在于,步骤S7包括以下子步骤:The method for constructing a natural tooth type database according to claim 1, wherein step S7 includes the following sub-steps:采用网络匹配算法将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配。A network matching algorithm is used to match the tooth data of each tooth with the position of the corresponding tooth in the three-dimensional model.
- 一种天然牙型数据库的构建***,其特征在于,包括:A construction system of a natural tooth type database, which is characterized in that it comprises:数据库单元:用于形成、储存和调用天然牙型数据库;Database unit: used to form, store and call the natural tooth type database;筛选单元:用于筛选出受试对象并记录受试对象的信息后储存进数据库单元;Screening unit: used to screen out the subject and record the subject’s information and store it in the database unit;三维建模单元:用于对受试对象上下牙弓的全部天然牙进行扫描并根据扫描结果构建三维模型;Three-dimensional modeling unit: used to scan all natural teeth of the upper and lower arches of the subject and construct a three-dimensional model according to the scanning results;分割单元:用于将三维模型上的每一颗天然牙都单独分割出来,且分割过程不破坏牙体硬组织形态;Segmentation unit: It is used to segment each natural tooth on the three-dimensional model separately, and the segmentation process does not destroy the hard tissue morphology of the tooth;修整单元:用于对分割出来的天然牙进行修整,去除牙体周围的软组织部分,保留牙体硬组织,并对粗糙的三角面片和扫描缺陷进行光滑处理;Trimming unit: used to trim the segmented natural tooth, remove the soft tissue around the tooth, preserve the hard tissue of the tooth, and smoothly process the rough triangular facets and scanning defects;镜像单元:用于对修整过的同侧牙体进行镜像处理,生成形态尺寸相同的对称牙体数据;Mirror unit: used to mirror the trimmed tooth on the same side to generate symmetric tooth data with the same shape and size;牙型解剖学标志区编辑单元:用于根据牙齿的类型和部位对对称牙体数据进行牙型解剖学标志区编辑形成牙体数据和桥体数据;Tooth anatomy landmark area editing unit: used to edit the dental anatomy landmark area of the symmetrical tooth data according to the type and position of the tooth to form tooth data and pontic data;牙列数据定位编辑单元:用于将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配,得出每一颗牙齿的位置排列数据;The dentition data positioning and editing unit: used to match the tooth body data of each tooth with the position of the corresponding tooth body in the three-dimensional model to obtain the position arrangement data of each tooth;所述数据库单元将牙体数据、桥体数据和位置排列数据均匹配于受试对象的信息形成天然牙型数据库。The database unit matches the dental data, pontic data and position arrangement data with the information of the test subject to form a natural dental database.
- 根据权利要求6所述的一种天然牙型数据库的构建***,其特征在于,所述筛选单元中:The construction system of a natural tooth type database according to claim 6, wherein in the screening unit:所述筛选内容包括:未经过任何牙体治疗;无牙周病、龋病;无发育畸形;天然牙具有适用的解剖学特点;The screening content includes: no dental treatment; no periodontal disease or caries; no developmental deformities; natural teeth with applicable anatomical characteristics;所述受试对象的信息包括记录受试对象姓名、年龄、性别、种族、职业、出生地、体型分类、正面面型分类、侧面面型分类、牙弓形态分类、中切牙形态分类、咬合分类和磨耗分级。The information of the subject includes recording the subject’s name, age, gender, race, occupation, place of birth, body type classification, front facial type classification, lateral facial type classification, dental arch morphology classification, central incisor morphology classification, occlusion Classification and wear classification.
- 根据权利要求6所述的一种天然牙型数据库的构建***,其特征在于,所述牙型解剖学标志区编辑单元中:The system for constructing a natural tooth type database according to claim 6, wherein in the dental anatomical landmark area editing unit:所述牙型解剖学标志区编辑包括:坐标、咬合面、切缘、外形高点线、颈缘、沟裂、接触区、牙尖、牙尖顶点、脊、咬合区域和桥体底部。The editing of the dental anatomical landmark area includes: coordinates, occlusal surface, incisal edge, contour high point line, neck edge, groove fissure, contact area, tooth cusp, tooth apex, ridge, occlusal area and pontic bottom.
- 根据权利要求8所述的一种天然牙型数据库的构建***,其特征在于,牙型解剖学标志区编辑单元用于:The construction system of a natural tooth type database according to claim 8, wherein the tooth type anatomical landmark area editing unit is used for:对前牙进行切缘的编辑;Edit the margin of the front teeth;对前磨牙和磨牙进行咬合面、牙尖、牙尖顶点、沟裂和咬合区域的编辑;Edit the occlusal surface, cusp, apex, furrow and occlusal area of premolars and molars;对于桥体,将所述三维模型封闭并对桥体底部进行编辑。For the bridge, the three-dimensional model is closed and the bottom of the bridge is edited.
- 根据权利要求6所述的一种天然牙型数据库的构建***,其特征在于,所述牙列数据定位编辑单元采用网络匹配算法将每一颗牙齿的牙体数据与所述三维模型中对应牙体的位置进行匹配。The system for constructing a natural tooth profile database according to claim 6, wherein the dentition data positioning and editing unit uses a network matching algorithm to compare the dental data of each tooth with the corresponding tooth in the three-dimensional model. Body position to match.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910604052.2 | 2019-07-05 | ||
CN201910604052.2A CN110334444B (en) | 2019-07-05 | 2019-07-05 | Method and system for constructing natural tooth type database |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021004346A1 true WO2021004346A1 (en) | 2021-01-14 |
Family
ID=68143214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2020/099685 WO2021004346A1 (en) | 2019-07-05 | 2020-07-01 | Method and system for constructing natural tooth library |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN110334444B (en) |
WO (1) | WO2021004346A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114504397B (en) * | 2022-02-15 | 2023-08-22 | 南京铖联激光科技有限公司 | Intelligent design method for removable partial denture |
RU2819644C1 (en) * | 2023-07-28 | 2024-05-22 | Сергей Владимирович Макаренко | Method for creating archive of natural anatomy of patient's teeth |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110334444B (en) * | 2019-07-05 | 2020-03-20 | 四川大学 | Method and system for constructing natural tooth type database |
CN111973293B (en) * | 2020-07-24 | 2021-09-14 | 上海交通大学医学院附属第九人民医院 | Method for manufacturing cast porcelain tooth veneers |
CN112133438B (en) * | 2020-07-29 | 2022-05-06 | 南京前知智能科技有限公司 | Intraoral prosthesis design method based on big data |
CN114078187A (en) | 2020-08-14 | 2022-02-22 | 华硕电脑股份有限公司 | Denture dentition model establishing method and system |
CN113995539B (en) * | 2021-10-25 | 2023-06-02 | 北京大学口腔医院 | Method and system for constructing deciduous dental crown physiological database |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105380723A (en) * | 2015-12-23 | 2016-03-09 | 南京航空航天大学 | Tooth arrangement method for manufacturing complete dentures |
US20170367789A1 (en) * | 2015-03-09 | 2017-12-28 | Fujitsu Limited | Tooth crown information acquisition method |
CN108614883A (en) * | 2018-05-02 | 2018-10-02 | 上海交通大学医学院附属第九人民医院 | A kind of the tooth database and its method for building up of canalis radicis dentis rating |
CN110334444A (en) * | 2019-07-05 | 2019-10-15 | 四川大学 | A kind of construction method and system of natural tooth form database |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8896592B2 (en) * | 2009-08-21 | 2014-11-25 | Align Technology, Inc. | Digital dental modeling |
TWI438732B (en) * | 2010-12-14 | 2014-05-21 | Shih Tseng Lee | Intergrated method of adapting guide - navigation systems and bio-prosthesis fabrication for dental implantation |
US20140329194A1 (en) * | 2013-05-05 | 2014-11-06 | Rohit Sachdeva | Orthodontic treatment planning using biological constraints |
CN106562800A (en) * | 2016-05-31 | 2017-04-19 | 中国人民解放军第四军医大学 | Full oral digital information acquisition and saving method and system |
US10483004B2 (en) * | 2016-09-29 | 2019-11-19 | Disney Enterprises, Inc. | Model-based teeth reconstruction |
CN106687068B (en) * | 2016-12-20 | 2021-06-11 | 北京大学口腔医院 | Complete denture manufacturing method and device based on data mining |
CN108629839A (en) * | 2018-05-09 | 2018-10-09 | 西安增材制造国家研究院有限公司 | The method for obtaining full dental cast using the oral cavity CT images under dental articulation state |
CN109166625B (en) * | 2018-10-10 | 2022-06-07 | 欧阳聪星 | Tooth virtual editing method and system |
-
2019
- 2019-07-05 CN CN201910604052.2A patent/CN110334444B/en active Active
-
2020
- 2020-07-01 WO PCT/CN2020/099685 patent/WO2021004346A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170367789A1 (en) * | 2015-03-09 | 2017-12-28 | Fujitsu Limited | Tooth crown information acquisition method |
CN105380723A (en) * | 2015-12-23 | 2016-03-09 | 南京航空航天大学 | Tooth arrangement method for manufacturing complete dentures |
CN108614883A (en) * | 2018-05-02 | 2018-10-02 | 上海交通大学医学院附属第九人民医院 | A kind of the tooth database and its method for building up of canalis radicis dentis rating |
CN110334444A (en) * | 2019-07-05 | 2019-10-15 | 四川大学 | A kind of construction method and system of natural tooth form database |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114504397B (en) * | 2022-02-15 | 2023-08-22 | 南京铖联激光科技有限公司 | Intelligent design method for removable partial denture |
RU2819644C1 (en) * | 2023-07-28 | 2024-05-22 | Сергей Владимирович Макаренко | Method for creating archive of natural anatomy of patient's teeth |
Also Published As
Publication number | Publication date |
---|---|
CN110334444A (en) | 2019-10-15 |
CN110334444B (en) | 2020-03-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021004346A1 (en) | Method and system for constructing natural tooth library | |
CN104699865B (en) | A kind of digitalized oral cavity fixes the method and device repaired | |
CN106806030B (en) | A kind of crown root threedimensional model fusion method | |
US8352060B2 (en) | Computer-aided fabrication of a removable dental prosthesis | |
CN111261287B (en) | Planting scheme design method and system, terminal and computer-readable storage medium | |
CN109124805B (en) | Method for manufacturing digital mirror CAD/CAM temporary tooth | |
CN112535545B (en) | Complete-process digital manufacturing method of complete denture | |
WO2009010543A1 (en) | Device for reshaping hard and soft tissues of the jaw and dentition | |
CN108024847B (en) | Method and equipment for manufacturing digital complete denture with easily-adapted function | |
CN112120815A (en) | Digital oral smile repairing method | |
CN112419476A (en) | Method and system for creating three-dimensional virtual image of dental patient | |
CN115177383B (en) | Digital full-mouth tooth arrangement method | |
Park et al. | Optical impression in restorative dentistry | |
WO2016055890A1 (en) | Method for determining and drawing the ideal individual shape of the six upper front teeth | |
CN111616824A (en) | Periodontal surgery guide plate and preparation method thereof | |
US20190083207A1 (en) | Method for Capturing Patient Information to Produce Digital Models and Fabricate Custom Prosthetic | |
EP3295894A1 (en) | Improved method for capturing patient information to produce digital models and fabricate custom prosthetics | |
CN213722553U (en) | Maxillary edentulous tray with aesthetic forenotice function | |
Gebhard | A Comprehensive Approach for Restoring Esthetics and Function in Fixed Prosthodontics. | |
Hack et al. | Digital impressions | |
RU2819644C1 (en) | Method for creating archive of natural anatomy of patient's teeth | |
CN115153929B (en) | False tooth blending guide plate manufacturing system and pad-closing type blending guide plate | |
KR102388411B1 (en) | Method for fabricating tray, data transfer method and simulation apparatus therefor | |
TWI524312B (en) | The Method of Making Dental Teaching Dental | |
RU2722739C1 (en) | Diagnostic technique for current dental health |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20836779 Country of ref document: EP Kind code of ref document: A1 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20836779 Country of ref document: EP Kind code of ref document: A1 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20836779 Country of ref document: EP Kind code of ref document: A1 |