CN117297817A - Digital technology-based method and system for manufacturing oral soft tissue fixing splint - Google Patents
Digital technology-based method and system for manufacturing oral soft tissue fixing splint Download PDFInfo
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- 210000004872 soft tissue Anatomy 0.000 title claims abstract description 101
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 51
- 238000005516 engineering process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000013461 design Methods 0.000 claims abstract description 58
- 210000000214 mouth Anatomy 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000002980 postoperative effect Effects 0.000 claims abstract description 18
- 238000010408 sweeping Methods 0.000 claims abstract description 17
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 12
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 12
- 210000001847 jaw Anatomy 0.000 claims description 32
- 210000004513 dentition Anatomy 0.000 claims description 14
- 238000013334 tissue model Methods 0.000 claims description 14
- 230000036346 tooth eruption Effects 0.000 claims description 14
- 210000004373 mandible Anatomy 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 10
- 210000000988 bone and bone Anatomy 0.000 claims description 9
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- 230000008719 thickening Effects 0.000 claims description 5
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- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C11/00—Dental articulators, i.e. for simulating movement of the temporo-mandibular joints; Articulation forms or mouldings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
- A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
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- G06T2207/10—Image acquisition modality
- G06T2207/10072—Tomographic images
- G06T2207/10081—Computed x-ray tomography [CT]
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- G06T2207/30—Subject of image; Context of image processing
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- G06T2207/30036—Dental; Teeth
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Abstract
The method and the system for manufacturing the oral cavity soft tissue fixing splint based on the digital technology are characterized in that cone beam CT data of a patient, a jaw model and a mouth sweeping model are obtained by scanning dental columns and soft tissues of the patient, and the jaw model is extracted from the cone beam CT data; constructing a working model for simulating the postoperative oral state based on cone beam CT data, a jawbone model and an oral scanning model; and carrying out clamping plate design based on the working model to obtain clamping plate design data, and carrying out fixed clamping plate manufacturing based on the clamping plate design data. According to the invention, by acquiring the working model guided by the jawbone shape and the soft tissue thickness, the intraoral shape after soft tissue augmentation is accurately simulated, polyether-ether-ketone is used as a material, and the design and the manufacture of the computer-aided splint are utilized, so that a personalized soft tissue fixing splint which is accurately matched with the postoperative soft tissue shape, does not influence the chewing function of a patient and has good use experience can be obtained, and the success rate of soft tissue transplantation is improved.
Description
Technical Field
The invention relates to the field of stomatology, in particular to a method and a system for manufacturing an oral soft tissue fixing splint based on a digital technology.
Background
With the progress of oral medical technology and materials, implant dentures have become the mainstream repair method of tooth loss, and are widely accepted by patients. The defect of the alveolar bone of different degrees is often accompanied by the tooth deficiency caused by periodontal disease, trauma, tumor and the like of a patient, most of the defect of the alveolar bone can be effectively recovered by the bone augmentation operation in clinical work, but the patient after bone augmentation is often accompanied by obvious soft tissue quantity deficiency, especially the insufficient width of the angular gingiva of an operation area, and related research shows that the sufficient width of the angular gingiva is a key for ensuring long-term stability of tissues around an implant.
The ideal keratinized gingival width can be obtained clinically through soft tissue transplantation, however, factors such as facial muscle traction, chewing movement and the like can shift the implant and generate cavities with the received area, the vascularization of the implant can be influenced, and finally the effect after the soft tissue transplantation is poor.
At present, the soft tissue fixation splint is used for fixing the implant after operation so as to promote vascularization and wound healing of the implant; however, the prior soft tissue fixation splint is designed before operation by the experience of doctors, and only the plaster model is trimmed by feeling so as to obtain the model simulating the situation of the vestibular sulcus and the soft tissue shape after operationThe working model is not accurate in design standard, the splint is manufactured by a craftsman end, errors are easily caused by multi-layer transmission of information, and the splint has larger deviation from the actual condition after operation due to the reasons, and the splint can be worn after repeated adjustment and modification, so that the soft tissue increment effect is affected; and the traditional soft tissue fixing splint is fixed by locking with adjacent teeth, so as to raise and biteThe patient chewing is affected while facing, making the patient experience worse and affecting oral function.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method and a system for manufacturing an oral soft tissue fixing splint based on a digital technology, which utilize computer-aided design and computer-aided manufacturing to design and manufacture the splint, so as to obtain a personalized soft tissue fixing splint which is precisely matched with the shape of the soft tissue after operation, does not influence the chewing function of a patient and has good use experience, thereby improving the success rate of soft tissue transplantation.
The technical scheme adopted for solving the technical problems is as follows:
the invention provides a method for manufacturing an oral soft tissue fixing splint based on a digital technology, which comprises the following steps:
acquiring cone beam CT data, a jaw model and a mouth sweeping model of a patient, wherein the mouth sweeping model is obtained by scanning dentition and soft tissues of the patient, and the jaw model is extracted from the cone beam CT data;
constructing a working model for simulating a post-operative oral state based on the cone beam CT data, the jaw model and the mouth scan model;
and carrying out clamping plate design based on the working model to obtain clamping plate design data, and carrying out fixed clamping plate manufacturing based on the clamping plate design data.
In an embodiment of the present application, constructing a working model for simulating a post-operative oral state based on the cone beam CT data, the jawbone model, and the oral scan model includes:
fitting the cone beam CT data with the dentition and the mouth scan model to obtain a first intermediate model;
measuring the vertical distance between the soft tissue and the bone surface in the first intermediate model;
uniformly expanding the vertical distance of the jaw model to obtain a jaw model with soft tissues attached;
fitting the soft tissue attached jawbone model with the mouth sweep model to obtain a second intermediate model;
and thickening the target operation area of the second intermediate model to obtain a working model simulating the postoperative state, wherein the target operation area is an area for executing soft tissue incremental operation.
In an embodiment of the present application, obtaining the jawbone model includes:
constructing an oral three-dimensional model of the patient based on the cone-beam CT data;
the method comprises the steps of extracting a hard tissue model from the oral cavity three-dimensional model, and cutting the hard tissue model to obtain a hard tissue model of a target area, wherein the target area is an area containing upper and lower jawbones;
separating the hard tissue model of the target area to obtain mandible data;
and filling, removing noise points and smoothing the mandible data to obtain the mandible model.
In an embodiment of the present application, the designing of the clamping plate based on the working model, to obtain clamping plate design data, includes:
importing the working model into a design tool, and adjusting the working model to a proper positioning channel direction;
trimming the inverted concave area of the working model after the positioning channel direction is adjusted, and filling wax to obtain a third intermediate model;
drawing a clamping plate outline in the third intermediate model by using a large connector and a clamping ring instruction to obtain a clamping plate initial model, wherein the clamping plate initial model comprises a base;
and extending the edge of the base to the vestibular sulcus, designing the hollowed-out small holes of the initial splint model, and trimming the round and smooth edge of the initial splint model to obtain splint design data.
In an embodiment of the present application, the manufacturing of the fixing splint based on the splint design data includes:
and importing the clamping plate design data into a computer of a cutting machine tool to control the cutting machine tool to cut and polish the polyether-ether-ketone disc, so as to obtain the fixed clamping plate.
In an embodiment of the present application, the second intermediate model has a thickening value of the target surgical area of 1mm-3mm.
In an embodiment of the present application, the parameters of the large connector and the clasp command are: the width of the clamping ring is 1.5mm-2.5mm, the thickness is 1.3mm-1.8mm, the arm tip of the clamping ring enters into the inverted recess of 0.5mm, and the thickness of the large connector is 1.5mm-2mm.
In an embodiment of the present application, further includes:
when the fixed splint is worn, a proper amount of denture soft lining material is extruded into the inner side of the fixed splint, then the denture soft lining material is worn in the mouth immediately, the soft lining material is shaped according to the shape of the soft tissue after operation, the splint is taken down after the preset time, the superfluous soft lining material is removed, and the superfluous soft lining material is embedded into the inner side of the splint through the locking action of small holes on the surface of the splint, so that the tissue surface of the splint is completely matched with the soft tissue after operation.
In an embodiment of the present application, further includes:
when the fixing splint is worn, dressing medicines are extruded into the inner side of the fixing splint so as to fix the dressing medicines.
The application also provides a system for manufacturing the oral soft tissue fixing splint based on digital technology, which comprises the following components:
the acquisition module is used for acquiring cone beam CT data of a patient, a jawbone model and a mouth sweeping model, wherein the mouth sweeping model is obtained by scanning dentition and soft tissues of the patient, and the jawbone model is extracted from the cone beam CT data;
the model construction module is used for constructing a working model for simulating the postoperative oral cavity state based on the cone beam CT data, the jawbone model and the oral cavity sweep model;
and the design and manufacturing module is used for carrying out the design of the clamping plate based on the working model to obtain clamping plate design data and carrying out the manufacturing of the clamping plate based on the clamping plate design data.
The invention has the advantages that: the invention relates to a method and a system for manufacturing an oral soft tissue fixing splint based on a digital technology, which are characterized in that cone beam CT data of a patient, a jaw model and a mouth sweeping model are obtained by scanning dentition and soft tissues of the patient, and the jaw model is extracted from the cone beam CT data; constructing a working model for simulating the postoperative oral state based on cone beam CT data, a jawbone model and an oral scanning model; and carrying out clamping plate design based on the working model to obtain clamping plate design data, and carrying out fixed clamping plate manufacturing based on the clamping plate design data. The invention obtains a working model guided by the jaw bone shape and the soft tissue thickness through related software and digital technology, accurately simulates the intraoral shape of the soft tissue increment after operation, takes the rapidly formed polyether-ether-ketone as a material, and can obtain a personalized soft tissue fixation splint which is accurately matched with the soft tissue shape after operation, does not influence the chewing function of a patient and has good use experience by utilizing the design and the manufacture of the computer-aided design and the computer-aided splint so as to improve the success rate of soft tissue transplantation.
Drawings
FIG. 1 is a schematic flow chart of a method for manufacturing a soft tissue fixation splint based on a digitizing technique according to an embodiment of the present application;
FIG. 2 is a schematic diagram of extracting a target region maxillary and mandibular tissue model according to an embodiment of the present application;
FIG. 3 is a schematic view of a separated maxilla and mandible in an embodiment of the present application;
FIG. 4 is a schematic diagram of mandible data in an embodiment of the present application;
FIG. 5 is a schematic diagram of a jaw model optimization process performed in Geomagic software according to an embodiment of the present application;
FIG. 6 is a schematic diagram of an oral scan model in an embodiment of the present application;
FIG. 7 is a schematic view of gum thickness measurement in an embodiment of the present application;
FIG. 8 is a schematic diagram of fitting a mouth sweep model to a jawbone model to obtain a working model in an embodiment of the present application;
FIG. 9 is a schematic diagram of creating a work order in 3shape Dental system in an embodiment of the present application;
FIG. 10 is a schematic diagram of adjusting a working model to a proper positioning channel according to an embodiment of the present application;
FIG. 11 is a schematic illustration of a cleat profile in an embodiment of the present application;
FIG. 12 is a schematic view of a finishing splint and hollowed-out hole design according to an embodiment of the present application;
fig. 13 is a schematic view of a fixing clip according to an embodiment of the present application.
Detailed Description
The present invention will be further described in detail with reference to the drawings and examples, which are only for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
The inventor found that the traditional soft tissue fixation splint is retained by locking with adjacent teeth, and bites are raisedThe patient chewing is affected while facing, making the patient experience worse and affecting oral function.
In order to overcome the defects and shortcomings, the method and the device acquire a working model guided by the jaw bone form and the soft tissue thickness through related software and digital technology, accurately simulate the intraoral form of the soft tissue increment after operation, design and manufacture the splint by using the rapid-forming polyether-ether-ketone as a material and utilizing computer-aided design and computer-aided manufacture, and can obtain a personalized soft tissue fixing splint which is accurately matched with the soft tissue form after operation, does not influence the chewing function of a patient and has good use experience, so that the success rate of soft tissue transplantation is improved. The specific process is as follows:
examples
Fig. 1 is a schematic flow chart of a method for manufacturing an oral soft tissue fixing splint based on a digital technology in an embodiment of the present application, as shown in fig. 1, the method for manufacturing an oral soft tissue fixing splint based on a digital technology provided in the present invention includes steps S110-S130:
s110, acquiring cone beam CT data, a jaw model and a mouth sweeping model of a patient, wherein the mouth sweeping model is obtained by scanning dentition and soft tissues of the patient, and the jaw model is extracted from the cone beam CT data;
before soft tissue incremental surgery, extracting a jaw bone model from a patient CBCT (Cone beam CT) by using reverse engineering software, and acquiring an oral cavity scanning model of a patient dentition and soft tissues by using an oral cavity scanner (acquiring an oral scanning image by using an oral scanner 3Shape TRIAS), so as to obtain two primary models;
specifically, acquiring the jaw model includes:
s111, constructing an oral cavity three-dimensional model of a patient based on the cone beam CT data;
specifically, the CBCT data of the patient is imported into the Mimics Research software in DICOM (digital imaging and medical communication) format to carry out three-dimensional reconstruction of the jawbone of the dental caries region of the patient.
S112, a hard tissue model is extracted from the oral cavity three-dimensional model, and is cut to obtain a hard tissue model of a target area, wherein the target area is an area containing upper and lower jawbones;
fig. 2 is a schematic diagram of extracting a hard tissue model of a target area according to an embodiment of the present application, and as shown in fig. 2, extracting the hard tissue model from CBCT, the upper and lower jaws are connected together. In this embodiment, the target area is cut by creating a New Mask to extract the hard tissue of the target area, and using a loop Mask command.
S113, FIG. 3 is a schematic diagram of mandible data in an embodiment of the present application, and as shown in FIG. 3, the hard tissue model of the target region is separated to obtain mandible data;
and S114, filling, removing noise points and smoothing the mandible data to obtain the mandible model.
Fig. 4 is a schematic diagram of a separated upper and lower jawbone in an embodiment of the present application, as shown in fig. 4, an Edit Mask and Region growth command separates the upper and lower jawbone to obtain lower jawbone data, and performs Cavity filling, noise removal on the lower jawbone data, and after smoothing, extracts a target Region jawbone model and exports the target Region jawbone model in a Stereolithography (STL) format.
Fig. 5 is a schematic diagram of a jaw model optimization process performed in geomic software in an embodiment of the present application, and as shown in fig. 5, an STL file obtained from the jaw model is further imported into the geomic software for optimization, and after materialization, a closed three-dimensional model is generated and exported and stored in an STL format.
Fig. 6 is a schematic diagram of an oral scanning model according to an embodiment of the present application, as shown in fig. 6, the dentition and soft tissue data images obtained by the 3shape Trios are stored in STL format for use.
S120, constructing a working model for simulating a postoperative oral state based on the cone beam CT data, the jawbone model and the oral scanning model;
fitting and trimming the two primary models according to the data such as the gum thickness and the like to obtain a working model for simulating the intraoral soft tissue morphology after the soft tissue incremental operation.
Specifically, constructing a working model for simulating a post-operative oral state based on the cone beam CT data, the jawbone model, and the oral scan model, comprising:
s121, fitting the cone beam CT data with the dentition and the mouth scan model to obtain a first intermediate model;
specifically, the jawbone model was fitted to the untreated oral scan model using 3shape dental system design software.
S122, measuring the vertical distance between the soft tissue and the bone surface in the first intermediate model; this vertical distance is the distance of the gum bone face, for example, 2.04mm.
Fig. 7 is a schematic view showing gum thickness measurement in an embodiment of the present application, as shown in fig. 7, using a measuring tool to measure the vertical distance of soft tissue to jawbone in an orthogonal view, thereby obtaining a gum thickness value a (in mm).
S123, uniformly expanding the vertical distance of the jaw model to obtain a soft tissue attached jaw model;
specifically, the jawbone was uniformly thickened a mm by an offset instruction in geomatic software, thereby simulating a jawbone model with soft tissue attachment. For example, according to the measured gum thickness of 2.04, selecting a soft tissue attached area, uniformly expanding the model by 2.04mm, wherein the model is a jawbone model truly simulating gum attachment.
S124, fitting the soft tissue attached jawbone model with the mouth sweep model to obtain a second intermediate model;
wherein, the extension area of the mouth scan model (the extension area refers to the area where the jawbone below the oral cavity is located) is not enough; the individual jaw model tooth portions are very rough and the jaw model is only bone data, with no gingival attachment; thus by fitting the mouth sweep to the jawbone, a working model is obtained in which the upper part is the exact dentition and the lower part is the jawbone contour.
Fig. 8 is a schematic diagram of a working model obtained by fitting a mouth-sweep model and a jawbone model in an embodiment of the present application, and as shown in fig. 8, the mouth-sweep model and the jawbone model after offset are fitted and trimmed in geomic software.
And S125, thickening the target operation area of the second intermediate model to obtain a working model simulating the postoperative state, wherein the target operation area is an area for executing soft tissue incremental operation.
Wherein, considering the edema condition after soft tissue transplantation, the model after fitting was trimmed to thicken 1-3mm (depending on the specific gum thickness of the patient) in the area to be soft tissue transplanted, as a final working model is shown in fig. 7.
And S130, carrying out clamp plate design based on the working model to obtain clamp plate design data, and carrying out fixed clamp plate manufacturing based on the clamp plate design data.
In an embodiment of the present application, the designing of the clamping plate based on the working model, to obtain clamping plate design data, includes:
s131, importing the working model into a design tool, and adjusting the working model to a proper positioning channel direction;
FIG. 9 is a schematic diagram of creating a work order in 3shape Dental system in an embodiment of the present application;
FIG. 10 is a schematic diagram of adjusting a working model to a proper positioning channel according to an embodiment of the present application;
as shown in fig. 9-10, the working model is imported and the model is adjusted to the proper lane orientation.
S132, finishing the inverted concave area of the working model after the positioning channel direction is adjusted to fill wax, so as to obtain a third intermediate model;
s133, drawing a clamp plate contour in the third intermediate model by using a large connector and a clamp ring instruction to obtain a clamp plate initial model, wherein the clamp plate initial model comprises a base;
FIG. 11 is a schematic drawing of a splint profile according to an embodiment of the present application, as shown in FIG. 11, using a large connector and clasp instructions to draw the splint profile, designing a PEEK clasp width of 1.5-2.5 mm and a thickness of 1.3-1.8 mm with reference to the removable partial denture design principle and PEEK (polyetheretherketone) denture manufacturing parameters in the literature, and clasp arm tips into 0.5mm undercut to obtain sufficient retention and define a large connector thickness of 1.5-2 mm.
S134, extending the edge of the base to the vestibular sulcus, and designing a hollowed-out small hole of the initial splint model, and trimming the edge of the initial splint model to be round and smooth to obtain splint design data.
Fig. 12 is a schematic diagram of a trimming splint and designing a hollowed-out small hole in an embodiment of the present application, as shown in fig. 12, the edge of the base is extended to the vestibular sulcus in the splint body, and the edge of the trimming splint is rounded and smooth, and the designed splint is exported in STL format file.
In an embodiment of the present application, the manufacturing of the fixing splint based on the splint design data includes:
and importing the clamping plate design data into a computer of a cutting machine tool to control the cutting machine tool to cut and polish the polyether-ether-ketone disc, so as to obtain the fixed clamping plate.
Specifically, a YUN TEC bat-100 CAD/CAM cutting machine is used for cutting the YUN TEC PEEK disc, the support rods are removed, and the outer structure of the soft tissue fixing splint is manufactured through polishing.
In an embodiment of the present application, further includes:
when the fixing splint is worn, a proper amount of denture soft lining material (such as DMG SILAGGM) is extruded into the inner side of the fixing splint, and then the denture soft lining material is immediately worn in the mouth, so that the soft lining material is shaped according to the postoperative form of soft tissues, the splint is taken down after the preset time, the redundant soft lining material is removed, and the rest soft lining material is embedded into the inner side of the splint through locking action with small holes on the surface of the splint, so that the tissue surface of the splint is completely matched with the postoperative soft tissues, and the personalized soft tissue fixing splint is obtained.
In addition, when wearing the fixed splint, dressing medicines can be extruded into the inner side of the fixed splint so as to fix the dressing medicines.
Fig. 13 is a schematic view of a fixing splint according to an embodiment of the present application, and the resulting fixing splint is shown in fig. 13.
The invention relates to a manufacturing method of an oral cavity soft tissue fixing splint based on a digital technology, which comprises the steps of obtaining cone beam CT data of a patient, a jaw model and a mouth sweeping model, wherein the mouth sweeping model is obtained by scanning dentition and soft tissues of the patient, and the jaw model is extracted from the cone beam CT data; constructing a working model for simulating the postoperative oral state based on cone beam CT data, a jawbone model and an oral scanning model; and carrying out clamping plate design based on the working model to obtain clamping plate design data, and carrying out fixed clamping plate manufacturing based on the clamping plate design data. The invention obtains a working model guided by the jaw bone shape and the soft tissue thickness through related software and digital technology, accurately simulates the intraoral shape of the soft tissue after incremental operation, takes the rapidly formed polyether-ether-ketone as a material, and utilizes computer aided design and computer aided manufacture to design and manufacture the splint, so that a personalized soft tissue fixing splint which is accurately matched with the soft tissue shape after operation, does not influence the chewing function of a patient and has good use experience can be obtained, and the success rate of soft tissue transplantation is improved.
The application also provides a system for manufacturing the oral soft tissue fixing splint based on digital technology, which comprises the following components:
the acquisition module is used for acquiring cone beam CT data of a patient, a jawbone model and a mouth sweeping model, wherein the mouth sweeping model is obtained by scanning dentition and soft tissues of the patient, and the jawbone model is extracted from the cone beam CT data;
the model construction module is used for constructing a working model for simulating the postoperative oral cavity state based on the cone beam CT data, the jawbone model and the oral cavity sweep model;
and the design and manufacturing module is used for carrying out the design of the clamping plate based on the working model to obtain clamping plate design data and carrying out the manufacturing of the clamping plate based on the clamping plate design data.
The invention relates to a digital technology-based oral cavity soft tissue fixed splint manufacturing system, which is characterized in that cone beam CT data of a patient, a jaw model and a mouth sweeping model are obtained by scanning dentition and soft tissues of the patient, and the jaw model is extracted from the cone beam CT data; constructing a working model for simulating the postoperative oral state based on cone beam CT data, a jawbone model and an oral scanning model; and carrying out clamping plate design based on the working model to obtain clamping plate design data, and carrying out fixed clamping plate manufacturing based on the clamping plate design data. The invention obtains a working model guided by the jaw bone shape and the soft tissue thickness through related software and digital technology, accurately simulates the intraoral shape of the soft tissue after incremental operation, takes the rapidly formed polyether-ether-ketone as a material, and utilizes computer aided design and computer aided manufacture to design and manufacture the splint, so that a personalized soft tissue fixing splint which is accurately matched with the soft tissue shape after operation, does not influence the chewing function of a patient and has good use experience can be obtained, and the success rate of soft tissue transplantation is improved.
The above embodiments should not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.
Claims (10)
1. The manufacturing method of the oral soft tissue fixing splint based on the digital technology is characterized by comprising the following steps of:
acquiring cone beam CT data, a jaw model and a mouth sweeping model of a patient, wherein the mouth sweeping model is obtained by scanning dentition and soft tissues of the patient, and the jaw model is extracted from the cone beam CT data;
constructing a working model for simulating a post-operative oral state based on the cone beam CT data, the jaw model and the mouth scan model;
and carrying out clamping plate design based on the working model to obtain clamping plate design data, and carrying out fixed clamping plate manufacturing based on the clamping plate design data.
2. The method for manufacturing the oral soft tissue fixed splint based on the digital technology according to claim 1, wherein constructing a working model for simulating the oral state after operation based on the cone beam CT data, the jawbone model and the oral scan model comprises:
fitting the cone beam CT data with the mouth scan model to obtain a first intermediate model;
measuring the vertical distance between the soft tissue and the bone surface in the first intermediate model;
uniformly expanding the vertical distance of the jaw model to obtain a jaw model with soft tissues attached;
fitting the soft tissue attached jawbone model with the mouth sweep model to obtain a second intermediate model;
and thickening the target operation area of the second intermediate model to obtain a working model simulating the postoperative state, wherein the target operation area is an area for executing soft tissue incremental operation.
3. The method for manufacturing the oral soft tissue fixation splint based on the digital technology according to claim 1, wherein obtaining the jawbone model comprises:
constructing an oral three-dimensional model of the patient based on the cone-beam CT data;
the method comprises the steps of extracting a hard tissue model from the oral cavity three-dimensional model, and cutting the hard tissue model to obtain a hard tissue model of a target area, wherein the target area is an area containing upper and lower jawbones;
separating the hard tissue model of the target area to obtain mandible data;
and filling, removing noise points and smoothing the mandible data to obtain the mandible model.
4. The method for manufacturing the oral soft tissue fixing splint based on the digital technology according to claim 1, wherein the splint design is performed based on the working model to obtain splint design data, comprising:
importing the working model into a design tool, and adjusting the working model to a proper positioning channel direction;
trimming the inverted concave area of the working model after the positioning channel direction is adjusted, and filling wax to obtain a third intermediate model;
drawing a clamping plate outline in the third intermediate model by using a large connector and a clamping ring instruction to obtain a clamping plate initial model, wherein the clamping plate initial model comprises a base;
and extending the edge of the base to the vestibular sulcus, designing the hollowed-out small holes of the initial splint model, and trimming the round and smooth edge of the initial splint model to obtain splint design data.
5. The method for manufacturing the oral soft tissue fixing splint based on the digital technology according to claim 1, wherein the step of manufacturing the fixing splint based on the splint design data comprises the steps of:
and importing the clamping plate design data into a computer of a cutting machine tool to control the cutting machine tool to cut and polish the polyether-ether-ketone disc, so as to obtain the fixed clamping plate.
6. The method for manufacturing the oral soft tissue fixed splint based on the digital technology according to claim 2, wherein the thickening value of the target operation area of the second intermediate model is 1mm to 3mm.
7. The method for manufacturing the oral soft tissue fixing splint based on the digital technology according to claim 4, wherein the parameters of the large connector and the clasp instruction are as follows: the width of the clamping ring is 1.5mm-2.5mm, the thickness is 1.3mm-1.8mm, the arm tip of the clamping ring enters into the inverted recess of 0.5mm, and the thickness of the large connector is 1.5mm-2mm.
8. The method for manufacturing the oral soft tissue fixing splint based on the digital technology according to claim 1, further comprising:
when the fixed splint is worn, a proper amount of denture soft lining material is extruded into the inner side of the fixed splint, then the denture soft lining material is worn in the mouth immediately, the soft lining material is shaped according to the shape of the soft tissue after operation, the splint is taken down after the preset time, the superfluous soft lining material is removed, and the superfluous soft lining material is embedded into the inner side of the splint through the locking action of small holes on the surface of the splint, so that the tissue surface of the splint is completely matched with the soft tissue after operation.
9. The method for manufacturing the oral soft tissue fixing splint based on the digital technology according to claim 1, further comprising:
when the fixing splint is worn, dressing medicines are extruded into the inner side of the fixing splint so as to fix the dressing medicines.
10. A digital technology-based oral soft tissue fixation splint manufacturing system, comprising:
the acquisition module is used for acquiring cone beam CT data of a patient, a jawbone model and a mouth sweeping model, wherein the mouth sweeping model is obtained by scanning dentition and soft tissues of the patient, and the jawbone model is extracted from the cone beam CT data;
the model construction module is used for constructing a working model for simulating the postoperative oral cavity state based on the cone beam CT data, the jawbone model and the oral cavity sweep model;
and the design and manufacturing module is used for carrying out the design of the clamping plate based on the working model to obtain clamping plate design data and carrying out the manufacturing of the clamping plate based on the clamping plate design data.
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