CN114145869A - Denture overlay manufacturing method, denture overlay manufacturing system, computer equipment and readable storage medium - Google Patents
Denture overlay manufacturing method, denture overlay manufacturing system, computer equipment and readable storage medium Download PDFInfo
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- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
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Abstract
The invention provides a manufacturing method of a denture overlay, which comprises the steps of obtaining dental image data, denture requirement data and exposed smile picture data of a patient; analyzing the dental image data to generate preoperative tooth three-dimensional data; acquiring original denture veneering template data according to denture requirement data; calculating rules, preoperative tooth three-dimensional data and outoft-tooth smile picture data according to the Bezier curve, adjusting original denture veneering template data and generating target denture veneering data; generating a cutting strategy of the target denture overlay according to the target denture overlay data and a preset cutting machining rule; and controlling the cutting equipment to execute cutting operation on the tooth model to be processed according to the cutting strategy of the target denture overlay so as to manufacture the target denture overlay. The invention directly depends on computer software to calculate and obtain the target denture veneering data, has higher automation degree, and is beneficial to improving the efficiency and the precision of denture design so as to improve the efficiency and the precision of subsequent denture veneering.
Description
Technical Field
The embodiment of the invention relates to the technical field of dental restoration, in particular to a denture overlay manufacturing method, a denture overlay manufacturing system, denture overlay manufacturing computer equipment and a computer-readable storage medium.
Background
The denture overlay is a restoration of a defective tooth of a patient. In the prior art, the denture overlay design is usually completed by manual design, and in the process of setting a denture repair scheme for a patient and executing the repair scheme by a doctor, the doctor needs to communicate with the patient for many times according to the actual condition of the patient, and the denture overlay design model is continuously adjusted manually to obtain the final denture overlay design. The above-mentioned scheme of adopting the artificial tooth overlay of manual design has the following defect: the artificial tooth veneering is designed manually, so that the design time is long, the efficiency is low, the design precision of the artificial tooth veneering is low, and further the subsequent manufacture of the artificial tooth veneering is low in efficiency and precision.
Disclosure of Invention
In view of this, embodiments of the present invention provide a denture overlay manufacturing method, a denture overlay manufacturing system, a computer device, and a computer-readable storage medium, which are used to solve the problems of low efficiency and low precision of subsequent manufacturing of denture overlays, which are caused by long design time, low efficiency, and low design precision of denture overlays depending on manual design.
The embodiment of the invention solves the technical problems through the following technical scheme:
one aspect of the present invention provides a method for manufacturing a denture overlay, comprising:
acquiring dental body image data, denture requirement data and exposed tooth smile picture data of a patient;
analyzing the dental body image data to generate preoperative tooth three-dimensional data;
acquiring original denture veneering template data according to the denture requirement data;
adjusting the original denture veneering template data according to a preset Bezier curve calculation rule, the preoperative tooth three-dimensional data and the outcrop smile picture data, and generating target denture veneering data according to a facial optimization rule of a skin curved surface;
generating a cutting strategy of the target denture overlay according to the target denture overlay data and a preset cutting machining rule; and
and controlling cutting equipment to execute cutting operation on the tooth model to be processed according to the cutting strategy of the target denture overlay so as to manufacture the target denture overlay.
Optionally, the adjusting the original denture overlay template data according to a preset bezier curve calculation rule, the preoperative tooth three-dimensional data, and the outtake smile picture data, and generating the target denture overlay data according to a facial optimization rule of a skin curved surface, further includes:
analyzing the preoperative three-dimensional tooth data to obtain an arch curve, volume data, position data and inclination data of each solid tooth of the patient;
adjusting the original denture overlay template data according to the volume data of each entity tooth to obtain denture overlay template data to be processed, wherein the denture overlay template data to be processed comprises volume data of at least one template tooth of the patient, the at least one template tooth corresponds to at least one entity tooth to be restored in a plurality of entity teeth, and the volume data of each template tooth is the same as the volume data of the corresponding entity tooth to be restored; and
and generating the target denture veneering data according to the denture veneering template data to be processed, the dental arch curve, the exposed smiling picture data, the position data of each entity tooth, the inclination data, the preset Bezier curve calculation rule and the facial optimization rule of the skin curved surface.
Optionally, the denture overlay template data to be processed comprises first morphological data of the at least one template tooth;
generating the target denture overlay data according to the denture overlay template data to be processed, the dental arch curve, the exposed smile picture data, the position data of each entity tooth, the inclination data, the preset Bezier curve calculation rule and the facial optimization rule of the skin curved surface, and further comprising:
calculating to obtain a denture attachment curve corresponding to the at least one template tooth according to the denture attachment template data to be processed, the position data of each entity tooth, the inclination data and the preset Bezier curve calculation rule;
adjusting first form data of the at least one template tooth according to the denture attachment curve, and obtaining second form data of the at least one template tooth, wherein the second form data of the template tooth comprises three-dimensional inclination data of the template tooth in the oral cavity of the patient;
performing a positioning process on the at least one template tooth based on the arch curve and second morphology data of the at least one template tooth; and
and combining the at least one template tooth subjected to the positioning treatment and the entity tooth of the patient according to the facial optimization rule of the skin curved surface, and generating the target denture veneering data based on the exposed smile picture data.
Optionally, the merging the at least one template tooth after the positioning processing and the entity tooth of the patient according to the facial optimization rule of the skin curved surface, and generating the target denture overlay data based on the tooth exposure smile picture data, further includes:
acquiring a first boundary of the at least one template tooth after the positioning treatment and a second boundary of a target entity tooth, wherein the target entity tooth is an entity tooth adjacent to the entity tooth to be restored;
according to the first boundary and the second boundary, a plurality of section curves between the at least one template tooth and the corresponding target entity tooth are calculated;
fusing the plurality of section curves to obtain a skin curved surface;
updating second morphological data of the at least one template tooth based on the skin curved surface, and obtaining target morphological data of the at least one template tooth;
combining the at least one template tooth after the positioning treatment and the entity tooth of the patient based on the target morphological data of the at least one template tooth and the preoperative tooth three-dimensional data to obtain denture veneer design volume data; and
and generating the target denture overlay data based on the denture overlay design data and the tooth exposure smile picture data.
Optionally, the generating the target denture overlay data based on the denture overlay design data and the tooth exposing smile picture data further comprises:
and adjusting the form data in the denture overlay design data based on the outcropping smile picture data to obtain the target denture overlay data.
Optionally, the generating a cutting strategy of the target denture overlay according to the target denture overlay data and a preset cutting rule further includes:
determining the thickness of the target denture overlay and target placing position data according to the target denture overlay data and the preset cutting machining rule, wherein the target placing position data is used for representing the placing position of tooth materials in the cutting equipment;
generating a cutting strategy of the target denture overlay based on the thickness of the target denture overlay, the target placement position data and the target denture overlay data, wherein the cutting strategy of the target denture overlay comprises a cutting step strategy of the cutting device and a cutting path strategy of the cutting device.
Optionally, the cutting path strategy of the cutting apparatus comprises a first cutting path strategy for the dental material and a second cutting path strategy for cutting a support bar for supporting a denture overlay;
the controlling the cutting equipment to execute the cutting operation on the tooth model to be processed according to the cutting strategy of the target denture overlay so as to obtain the target denture overlay further comprises:
performing a first cutting operation on the dental material based on the first cutting path strategy to obtain a denture overlay connecting the support rods; and
performing a second cutting operation on the residual material of the support rod positioned outside the denture adhesive surface based on the second cutting path strategy to manufacture the target denture adhesive surface; wherein the thickness range of the manufactured target denture overlay is 0.15-0.6 mm.
In another aspect of the present invention, there is provided a denture overlay making system, comprising:
the acquisition module is used for acquiring dental image data, denture requirement data and exposed smile picture data of a patient;
the analysis module is used for analyzing the dental body image data to generate preoperative tooth three-dimensional data;
the template acquisition module is used for acquiring original denture veneering template data according to the denture requirement data;
the false tooth template generation module is used for calculating a rule according to a preset Bezier curve, the preoperative tooth three-dimensional data and the outcropping smile picture data, adjusting the original false tooth veneering template data and generating target false tooth veneering data according to a facial optimization rule of a skin curved surface;
the strategy generating module is used for generating a cutting strategy of the target denture overlay according to the target denture overlay data and a preset cutting machining rule; and
and the manufacturing module is used for controlling the cutting equipment to execute cutting operation on the tooth model to be processed according to the cutting strategy of the target denture veneer so as to manufacture the target denture veneer.
An aspect of an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to realize the steps of the denture overlay making method.
An aspect of an embodiment of the present invention further provides a computer-readable storage medium including a memory, a processor, and a computer program stored on the memory and executable on at least one processor, the at least one processor implementing the steps of the denture fabrication method as described above when executing the computer program.
According to the denture overlay manufacturing method, the denture overlay manufacturing system, the computer equipment and the computer readable storage medium, the original denture overlay template data are adjusted according to the preset Bezier curve calculation rule, the preoperative tooth three-dimensional data and the tooth exposure smile picture data, and the target denture overlay data are generated; generating a cutting strategy of the target denture overlay according to the target denture overlay data and a preset cutting machining rule; and controlling cutting equipment to execute cutting operation on the tooth model to be processed according to the cutting strategy of the target denture overlay so as to manufacture the target denture overlay. The embodiment of the invention directly depends on computer software to calculate to obtain the target denture veneering data, has higher automation degree, and is beneficial to improving the efficiency and the precision of denture design so as to improve the efficiency and the precision of subsequent denture veneering.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 schematically illustrates an example flow chart of a denture overlay making method according to an embodiment of this invention;
FIG. 2 schematically illustrates an example flow chart for generating target denture overlay data in a denture overlay fabrication method according to an embodiment of the present invention;
FIG. 3 schematically illustrates an example flow chart for generating target denture overlay data in a denture overlay fabrication method according to an embodiment of the present invention;
FIG. 4 schematically illustrates an example flow chart for generating target denture overlay data in a denture overlay fabrication method according to an embodiment of this invention;
FIG. 5 schematically illustrates an example flow chart of a cutting strategy for creating a target denture overlay in a denture overlay fabrication method according to an embodiment of the present invention;
FIG. 6 schematically illustrates an exemplary flow chart for creating a target denture overlay in a denture overlay creation method according to an embodiment of the present invention;
FIG. 7 is a block diagram schematically illustrating a denture overlay making system according to a second embodiment of the present invention; and
fig. 8 is a schematic diagram of a hardware architecture of a computer device suitable for implementing a denture overlay manufacturing method according to a third embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the descriptions relating to "first", "second", etc. in the embodiments of the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In the description of the present invention, it should be understood that the numerical references before the steps do not identify the order of performing the steps, but merely serve to facilitate the description of the present invention and to distinguish each step, and thus should not be construed as limiting the present invention.
Example one
Referring to fig. 1, a flowchart illustrating steps of a method for manufacturing a prosthetic tooth overlay according to an embodiment of the invention is shown. It is to be understood that the flow charts in the embodiments of the present method are not intended to limit the order in which the steps are performed. The following description is given by taking a computer device as an execution subject, specifically as follows:
as shown in fig. 1, the denture overlay manufacturing method may include steps S100 to S110, in which:
and step S100, acquiring dental image data, denture requirement data and exposed smile picture data of the patient.
In this embodiment, CBCT data information of the oral cavity of the patient, i.e., the above-mentioned topic image data, is acquired by using a CBCT apparatus. The cbct (cone beam CT) apparatus is a cone beam CT apparatus, which is a cone beam projection computed tomography apparatus.
And S102, analyzing the dental image data to generate preoperative tooth three-dimensional data.
In the embodiment, an oral cavity scanning device is adopted to analyze dental image data and scan to obtain complete preoperative tooth three-dimensional data in the oral cavity of the patient.
And step S104, acquiring original denture overlay template data according to the denture requirement data.
In this embodiment, the denture requirement data includes the tooth wear area selected by the patient under the doctor's recommendation and the requirement for a tooth restoration form under the repair technician's recommendation.
And S106, adjusting the original denture veneering template data according to a preset Bezier curve calculation rule, the preoperative tooth three-dimensional data and the outcropping smile picture data, and generating target denture veneering data according to a facial optimization rule of a skin curved surface.
In this embodiment, the target denture attachment data is calculated and generated by a Computer Aided Design (CAD).
In order to enable the patient to view the form of the denture attachment and feel the repairing effect more intuitively, in an exemplary embodiment, after the target denture attachment data is examined, a design document is exported, and beautifying wax is manufactured according to the design document, so that the patient can feel the repairing effect of the tooth body more intuitively.
In order to obtain dental prosthesis overlay data in accordance with oral medicine, referring to fig. 2, the generating of the target dental prosthesis overlay data may further be performed by the following operations, including: step S200, analyzing the preoperative tooth three-dimensional data to obtain an arch curve of the patient, volume data, position data and inclination data of each solid tooth; step S202, adjusting the original denture overlay template data according to the volume data of each entity tooth to obtain to-be-processed denture overlay template data, wherein the to-be-processed denture overlay template data comprises volume data of at least one template tooth of the patient, the at least one template tooth corresponds to at least one entity tooth to be restored in a plurality of entity teeth, and the volume data of each template tooth is the same as the volume data of the corresponding entity tooth to be restored; and step S204, generating the target denture veneering data according to the denture veneering template data to be processed, the dental arch curve, the exposed smile picture data, the position data of each entity tooth, the inclination data, the preset Bezier curve calculation rule and the facial optimization rule of the skin curved surface. In the embodiment, the volume of the designed tooth is determined by the natural solid tooth in the oral cavity of the patient, and the volume data of the natural solid tooth in the oral cavity of the patient is automatically analyzed through CAD software; and adjusting the original denture overlay template data according to the volume data of the entity teeth to obtain the denture overlay template data to be processed, wherein the form of the template teeth shown by the denture overlay template data to be processed has the same volume as the natural entity teeth corresponding to the patient. The method has the advantages that the target denture attachment data corresponding to the patient are generated adaptively according to the actual situation of natural entity teeth in each oral cavity, and the practicability of the method is effectively improved.
In an exemplary embodiment, the denture overlay template data to be processed comprises first morphological data of the at least one template tooth; in order to make the designed tooth more fit to the natural solid tooth in the oral cavity of the patient, referring to fig. 3, the operation of generating the target denture facing data according to the denture facing template data to be processed, the arch curve, the exposed smile picture data, the position data of each solid tooth, the inclination data, the preset bezier curve calculation rule, and the facial optimization rule of the skin curved surface further includes the following steps S300 to S306, where: step S300, calculating to obtain a denture attachment curve corresponding to the at least one template tooth according to the denture attachment template data to be processed, the position data of each entity tooth, the inclination data and the preset Bezier curve calculation rule; step S302, adjusting first form data of the at least one template tooth according to the denture attachment curve, and obtaining second form data of the at least one template tooth, wherein the second form data of the template tooth comprises three-dimensional inclination data of the template tooth in the oral cavity of the patient; step S304, carrying out positioning processing on the at least one template tooth based on the dental arch curve and the second form data of the at least one template tooth; and step S306, merging the at least one template tooth after the positioning treatment and the entity tooth of the patient according to the facial optimization rule of the skin curved surface, and generating the target denture veneering data based on the tooth exposing smile picture data.
In this embodiment, at least one template tooth is automatically aligned by a calculation rule related to Bezier curve. The bezier curve, also called a bezier curve or a bezier curve, is a mathematical curve applied to a two-dimensional graphics application program. Because three lines are arranged on the dental arch to control the integral three-dimensional inclination of the tooth body in the oral cavity, the position data and the inclination data of at least one template tooth are obtained by calculation according to the preoperative three-dimensional data of the patient, the position data and the inclination data are substituted into the Bezier curve calculation rule for calculation, so that a plurality of denture veneering curve data are obtained by calculation, and a plurality of denture veneering curves are drawn according to a plurality of pieces of veneering curve data. The template teeth are placed on the arch curves of the solid teeth through automatic positioning.
In order to achieve the effect that the template tooth and the solid tooth are deformed little or not when combined, referring to fig. 4, the combining the at least one template tooth after being positioned and the solid tooth of the patient according to the facial optimization rule of the skin curved surface, and generating the target denture overlay data based on the tooth exposure smile image data may further be obtained by: step S400, acquiring a first boundary of the at least one template tooth after the positioning treatment and a second boundary of a target entity tooth, wherein the target entity tooth is an entity tooth adjacent to the entity tooth to be restored; step S402, according to the first boundary and the second boundary, calculating to obtain a plurality of section curves between the at least one template tooth and the corresponding target entity tooth; s404, fusing the plurality of section curves to obtain a skin curved surface; step S406, updating second morphological data of the at least one template tooth based on the skin curved surface, and obtaining target morphological data of the at least one template tooth; step S408, merging the at least one template tooth after the positioning treatment and the entity tooth of the patient based on the target morphological data of the at least one template tooth and the preoperative tooth three-dimensional data to obtain denture veneer design volume data; and step S410, generating the target denture overlay data based on the denture overlay design data and the tooth exposing smile picture data.
In this embodiment, the skin curved surface is constructed to realize the combination between the template tooth and the solid tooth, so as to achieve the effect that the two teeth are combined and then deformed less or even not deformed. The skin curved surface is formed by fusing a plurality of section curves. For example, the specific construction process of the skin curved surface is as follows:
a first boundary of a template tooth and a second boundary of a target solid tooth are obtained, and a plurality of section curves, namely B-spline curves, between the first boundary and the second boundary are calculated. Wherein: the cross-sectional curve can be calculated by the following formula:
wherein the content of the first and second substances,
representing rational or non-rational section curves, and u represents a uniform node vector of each section curve;
control points representing each section curve; n is a radical ofi,p(u) is expressed as a B-spline basis function. It is assumed that all cross-sectional curves are defined on the same node vector U and have a common degree p.
After a plurality of cross-sectional curves are calculated, a ridge line is constructed. The ridge line constructing process comprises the following steps: in the v direction (longitudinal direction), the number of times q is selected, and a parameter is determined
And a node vector V according to the number of times q and the parameter
And the node vector V constructs a ridge line.
And (4) translating, rotating and the like the plane formed by the plurality of section curves according to the constructed ridge line so as to determine the positioning of the plurality of section curves in the space.
Passing parameters
And (5) carrying out n +1 times of curve interpolation on the control points of the plurality of section curves by the sum node vector V to obtain the control points of the skin curved surface
Wherein the content of the first and second substances,
is interpolated from
The jth control point of the q-th curve. Multiple control points
Control of the forming of the curved surface of the skinAn array of spots. The configuration of the skin curve can be understood as passing through a plurality of control points
And
and fitting the skin curved surface. It should be noted that only one of the plurality of cross-sectional curves is a rational curve, and the v direction is opposite to the v direction
The interpolation of (2) is also performed in a four-dimensional space; otherwise, only the interpolation of three-dimensional points is required
When the template teeth and the solid teeth are combined, the edges of the template teeth enable the teeth to be easily deformed during combination; in the embodiment of the invention, the edge deformation of the template tooth can be avoided better by constructing the skin curved surface, so that the influence of deformation on the tooth form is reduced. In the embodiment of the invention, the link of the skin curved surface between the control line surfaces is a curved surface smooth link, and smooth processing from the neck edge 1/3 to the edge of the template tooth can be controlled according to the adjustment parameters to realize the curved surface smooth link. According to the embodiment of the invention, the integrity of the form of the template tooth can be better maintained through the skin curved surface, and no section or step pattern is generated between the template tooth and the solid tooth. When the technique of skin curved surface is adopted for tooth combination, the tooth deformation is not more than 5%.
To further ensure that the template tooth is compatible with oral aesthetics, in an exemplary embodiment, the morphology data in the denture overlay design volume data is adjusted based on the outcropping smile picture data to obtain the target denture overlay data. In this embodiment, the designer can generate an aesthetic denture overlay file that is more aesthetically pleasing to the mouth with a small amount of modification to the morphological data in the target denture overlay data.
And S108, generating a cutting strategy of the target denture overlay according to the target denture overlay data and a preset cutting machining rule.
In this embodiment, a cutting strategy for the target denture attachment is generated by a Computer Aided Manufacturing (CAM).
In order to achieve the effect of saving tooth materials, the tooth materials can be zirconia trays; referring to fig. 5, the operation of generating the cutting strategy for the target denture overlay according to the target denture overlay data and the preset cutting rule further includes the following steps S500 to S502, wherein: step S500, determining the thickness of the target denture overlay and target placement position data according to the target denture overlay data and the preset cutting machining rule, wherein the target placement position data is used for representing the placement position of tooth materials in the cutting equipment; and step S502, generating a cutting strategy of the target denture overlay based on the thickness of the target denture overlay, the target placement position data and the target denture overlay data, wherein the cutting strategy of the target denture overlay comprises a cutting step strategy of the cutting equipment and a cutting path strategy of the cutting equipment. In the embodiment of the invention, the CAM is controlled to determine the three-dimensional processing data of the tooth material, the three-dimensional processing data is analyzed to generate a plurality of positioning strategies, the positioning strategy with the characteristics corresponding to the material saving is selected according to the characteristics of the plurality of positioning strategies, and the positioning strategy is executed to determine the target placing position.
In an exemplary embodiment, the corresponding placement strategy is different for different target denture overlay data. For example, the anterior teeth are in the optimal cutting position when vertically inclined by 30 °, and are identified as the optimal tooth placement position, and the posterior teeth are in the optimal cutting position and the material saving position when vertically inclined by 90 °. To further save dentifrice, the method further comprises: and calculating the cutting protection range of the cutting equipment, and adjusting the target placing position data of the tooth material according to the cutting protection range through the CAM. Illustratively, when the semi-fixture is opened to the position close to the empty outside of the tooth material, the minimum range is allowed to be opened to the empty position, the data of the target placing position of the tooth material is adjusted based on the minimum range of the opened space, and under the condition of ensuring normal cutting of teeth, the edge typesetting of the fixture is preferentially carried out, so that the effect of saving a material tray is achieved. Further, in order to satisfy the morphological requirements of the patient on the target denture overlay to the maximum extent, the forming thickness of the target denture overlay is reduced within a controllable range according to the setting of the thickness data of the target denture overlay, the data until the target is placed and the target denture overlay data, and under the condition that the morphology of the target denture overlay is preserved, a cutting strategy of the target denture overlay is generated, and the cutting operation is executed according to the cutting strategy to manufacture the target denture overlay. Illustratively, when the thickness of the facing is equal to a preset thickness threshold value, or the thickness of the facing is within a preset thickness value range, a suitable cutting strategy is selected according to the thickness and the placing position.
In an exemplary embodiment, the method further comprises: the switching of the trays is controlled by CAM technology to realize the selection of the trays.
And step S110, controlling cutting equipment to execute cutting operation on the tooth model to be processed according to the cutting strategy of the target denture overlay so as to obtain the target denture overlay.
In this embodiment, the cutting effect of the ultra-thin denture overlay can be achieved by the cutting step matched with the target denture overlay data and the matched stable cutting path. Illustratively, the thickness of the target denture overlay can be guaranteed to be between 0.15 and 0.6 millimeters (mm) depending on the cutting strategy. Specifically, the thinnest thickness of the target denture overlay can be adjusted to 0.15 mm.
Referring to fig. 6, the cutting path strategy of the cutting apparatus includes a first cutting path strategy for the tooth material and a second cutting path strategy for cutting a support rod for supporting a denture overlay; the step S110 may further include the following steps, wherein: step S600, performing a first cutting operation on the dental material based on the first cutting path strategy to obtain a false tooth veneer connected with the supporting rod; step S602, performing a second cutting operation on the residual material of the support rod positioned outside the denture overlay based on the second cutting path strategy to manufacture the target denture overlay; wherein the thickness range of the manufactured target denture overlay is 0.15-0.6 mm. In the embodiment of the invention, the graphic data corresponding to the veneering data of the target denture and the graphic data of the support bar in the CAM are independent; the position of the supporting rod can be confirmed through an artificial intelligence recognition technology, and the excess material of the supporting rod is automatically cut. Through the accurate cutting operation of second cutting route strategy, reduce and clear away the damage of bracing piece in-process to the artificial tooth wainscot, labour saving and time saving.
For example, the scheme of identifying the support bar by the artificial intelligence identification technology comprises the following steps: determining coordinate position data of the supporting rods in CAM typesetting, and generating corresponding supporting rod cutting tool path data (namely a second cutting path strategy) according to the coordinate position data of the supporting rods, tool path generating software in CAM and the first cutting path strategy; and then, the excess material of the supporting rod on the outer surface of the denture attachment can be executed according to a second cutting path strategy so as to finish the automatic cutting of the excess material of the supporting rod.
The method further includes finishing the targeted denture overlay, comprising: and sintering the target denture overlay, polishing and modifying the sintered target denture overlay by a small amount, and glazing and crystallizing the polished target denture overlay to finish the manufacture of the target denture overlay.
The invention solves the problems of complicated manual excessive grinding process, complex process, excessive labor consumption and the like of the zirconia. The embodiment of the invention directly depends on computer software to calculate to obtain the target denture veneering data, has higher automation degree, is beneficial to improving the efficiency and the precision of denture design and further improves the efficiency and the precision of subsequent denture veneering; the denture overlay is ensured to accord with the oral aesthetics, the process flow is simplified, the speed of the denture overlay finished product is increased, and the manufacturing efficiency and quality of the denture overlay are improved. The false tooth veneering is designed by utilizing the digital automatic splicing technology, so that the form requirement of a patient on the false tooth veneering can be met to the maximum extent, and the abrasion required by the tooth preparation on the surface of the solid tooth of the patient is reduced. The automatic intelligent cutting support rod can reduce the misoperation of a technician and further advance to automation.
The scheme for manufacturing the denture overlay in the embodiment of the invention also has at least the following beneficial effects:
(1) the oral cavity scanning equipment can be used for scanning and acquiring complete preoperative tooth three-dimensional data in the oral cavity of a patient, and the completeness of data acquisition is guaranteed.
(2) The best placement position of the tooth material in the cutting equipment is determined through the CAM technology, and the tooth material is saved.
(3) By adopting a self-developed cutting strategy of the target denture facing, the expenditure of the zirconia ultrathin facing consumables can be reduced, and the accurate denture facing form which accords with the oral aesthetics can be obtained through cutting.
(4) In the embodiment of the invention, the method can be used for minimally wearing the prepared teeth on the surface of the solid teeth of the patient and simultaneously maximally meeting the morphological requirements of the patient on the denture veneering; the method can cut a denture overlay with a thickness of 0.15-0.6mm, and the cutting stability of the denture overlay with a thickness of 0.15-0.6mm reaches 99%.
(5) The position of the supporting rod is automatically identified, and the excess material of the supporting rod is automatically cut off, so that time and labor are saved.
(6) The manual manufacturing process of the denture overlay is changed into the automatic manufacturing of the denture overlay, and the method has higher automation degree of the denture overlay; and better doctor-patient communication effect can be realized through software, the process cost is saved, and the operation time of technicians is reduced.
Example two
Referring to fig. 7, a schematic diagram of program modules of a system 70 for making a denture overlay according to an embodiment of the present invention is shown. In this embodiment, the denture overlay manufacturing system 70 may include or be divided into one or more program modules, which are stored in an embedded memory chip and executed by one or more processors, to complete the present invention and to implement the denture overlay manufacturing method described above. The program modules referred to in the embodiments of the present invention refer to a series of computer program instruction segments capable of performing specific functions, and are more suitable than the program itself for describing the execution process of the denture overlay making system 70 in the storage medium. The following description will specifically describe the functions of the program modules of the present embodiment:
the system comprises: an acquisition module 700, an analysis module 702, a template acquisition module 704, a denture template generation module 706, a policy generation module 708, and a fabrication module 710, wherein:
an obtaining module 700, configured to obtain dental image data, denture requirement data, and exposed smile picture data of a patient;
an analysis module 702, configured to analyze the dental image data to generate preoperative dental three-dimensional data;
a template obtaining module 704, configured to obtain original denture overlay template data according to the denture requirement data;
the false tooth template generation module 706 is configured to adjust the original false tooth overlay template data according to a preset bezier curve calculation rule, the preoperative tooth three-dimensional data, and the outcropping smile picture data, and generate target false tooth overlay data according to a facial optimization rule of a skin curved surface;
a strategy generating module 708, configured to generate a cutting strategy for the target denture overlay according to the target denture overlay data and a preset cutting rule;
and the manufacturing module 710 is configured to control a cutting device to perform a cutting operation on the tooth model to be processed according to the cutting strategy of the target denture overlay, so as to manufacture the target denture overlay.
In an exemplary embodiment, the denture template generation module 706 is further configured to: analyzing the preoperative three-dimensional tooth data to obtain an arch curve, volume data, position data and inclination data of each solid tooth of the patient; adjusting the original denture overlay template data according to the volume data of each entity tooth to obtain denture overlay template data to be processed, wherein the denture overlay template data to be processed comprises volume data of at least one template tooth of the patient, the at least one template tooth corresponds to at least one entity tooth to be restored in a plurality of entity teeth, and the volume data of each template tooth is the same as the volume data of the corresponding entity tooth to be restored; and generating the target denture veneering data according to the denture veneering template data to be processed, the exposed smile picture data, the dental arch curve, the position data of each entity tooth, the inclination data, the preset Bezier curve calculation rule and the facial optimization rule of the skin curved surface.
In an exemplary embodiment, the denture overlay template data to be processed comprises first morphological data of the at least one template tooth; the denture template generation module 706, further configured to: calculating to obtain a denture attachment curve corresponding to the at least one template tooth according to the denture attachment template data to be processed, the position data of each entity tooth, the inclination data and the preset Bezier curve calculation rule; adjusting first form data of the at least one template tooth according to the denture attachment curve, and obtaining second form data of the at least one template tooth, wherein the second form data of the template tooth comprises three-dimensional inclination data of the template tooth in the oral cavity of the patient; performing a positioning process on the at least one template tooth based on the arch curve and second morphology data of the at least one template tooth; and merging the at least one template tooth after the positioning treatment and the entity tooth of the patient according to the facial optimization rule of the skin curved surface, and generating the target denture veneering data based on the exposed smile picture data.
In an exemplary embodiment, the denture template generation module 706 is further configured to: acquiring a first boundary of the at least one template tooth after the positioning treatment and a second boundary of a target entity tooth, wherein the target entity tooth is an entity tooth adjacent to the entity tooth to be restored; according to the first boundary and the second boundary, a plurality of section curves between the at least one template tooth and the corresponding target entity tooth are calculated; fusing the plurality of section curves to obtain a skin curved surface; updating second morphological data of the at least one template tooth based on the skin curved surface, and obtaining target morphological data of the at least one template tooth; combining the at least one template tooth after the positioning treatment and the entity tooth of the patient based on the target morphological data of the at least one template tooth and the preoperative tooth three-dimensional data to obtain denture veneer design volume data; and generating the target denture overlay data based on the denture overlay design data and the tooth exposure smile picture data.
In an exemplary embodiment, the denture template generation module 706 is further configured to: and adjusting the form data in the denture overlay design data based on the outcropping smile picture data to obtain the target denture overlay data.
In an exemplary embodiment, the policy generation module 708 is further configured to: determining the thickness of the target denture overlay and target placing position data according to the target denture overlay data and the preset cutting machining rule, wherein the target placing position data is used for representing the placing position of tooth materials in the cutting equipment; and generating a cutting strategy of the target denture overlay based on the thickness of the target denture overlay, the target placement position data and the target denture overlay data, wherein the cutting strategy of the target denture overlay comprises a cutting step strategy of the cutting equipment and a cutting path strategy of the cutting equipment.
In an exemplary embodiment, the cutting path strategy of the cutting apparatus comprises a first cutting path strategy for the dental material and a second cutting path strategy for cutting a support bar for supporting a denture overlay; the making module 710 is further configured to: performing a first cutting operation on the dental material based on the first cutting path strategy to obtain a denture overlay connecting the support rods; performing a second cutting operation on the residual material of the support rod positioned outside the denture adhesive surface based on the second cutting path strategy to manufacture the target denture adhesive surface; wherein the thickness range of the manufactured target denture overlay is 0.15-0.6 mm.
EXAMPLE III
Fig. 8 schematically shows a hardware architecture diagram of a computer device 10000 suitable for implementing a denture overlay manufacturing method according to a third embodiment of the invention. In this embodiment, the computer device 10000 is a device capable of automatically performing score calculation and/or information processing according to a preset or stored instruction. For example, the server may be a smart phone, a tablet computer, a notebook computer, a desktop computer, a rack server, a blade server, a tower server or a rack server (including an independent server or a server cluster composed of a plurality of servers), a gateway, and the like. As shown in fig. 8, computer device 10000 includes at least, but is not limited to: the memory 10010, processor 10020, and network interface 10030 may be communicatively linked to each other via a system bus. Wherein:
the memory 10010 includes at least one type of computer-readable storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. In some embodiments, the storage 10010 may be an internal storage module of the computer device 10000, such as a hard disk or a memory of the computer device 10000. In other embodiments, the memory 10010 may also be an external storage device of the computer device 10000, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like, provided on the computer device 10000. Of course, the memory 10010 may also include both internal and external memory modules of the computer device 10000. In this embodiment, the memory 10010 is generally used for storing an operating system installed on the computer device 10000 and various application software, such as program codes of the denture overlay making method. In addition, the memory 10010 may also be used to temporarily store various types of data that have been output or are to be output.
Processor 10020, in some embodiments, can be a Central Processing Unit (CPU), controller, microcontroller, microprocessor, or other data Processing chip. The processor 10020 is generally configured to control overall operations of the computer device 10000, such as performing control and processing related to data interaction or communication with the computer device 10000. In this embodiment, the processor 10020 is configured to execute program codes stored in the memory 10010 or process data.
Network interface 10030 may comprise a wireless network interface or a wired network interface, and network interface 10030 is generally used to establish a communication link between computer device 10000 and other computer devices. For example, the network interface 10030 is used to connect the computer device 10000 to an external terminal through a network, establish a data transmission channel and a communication link between the computer device 10000 and the external terminal, and the like. The network may be a wireless or wired network such as an Intranet (Intranet), the Internet (Internet), a Global System of Mobile communication (GSM), Wideband Code Division Multiple Access (WCDMA), a 4G network, a 5G network, Bluetooth (Bluetooth), or Wi-Fi.
It should be noted that fig. 8 only illustrates a computer device having the components 10010-10030, but it is to be understood that not all illustrated components are required and that more or less components may be implemented instead.
In this embodiment, the denture overlay making method stored in the memory 10010 can be further divided into one or more program modules and executed by a processor (in this embodiment, the processor 10020) to complete the embodiment of the present invention.
Example four
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by at least one processor, implements the steps of the denture overlay manufacturing method in the embodiments.
In this embodiment, the computer-readable storage medium includes a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a Read Only Memory (ROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a Programmable Read Only Memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. In some embodiments, the computer readable storage medium may be an internal storage unit of the computer device, such as a hard disk or a memory of the computer device. In other embodiments, the computer readable storage medium may be an external storage device of the computer device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the computer device. Of course, the computer-readable storage medium may also include both internal and external storage devices of the computer device. In this embodiment, the computer-readable storage medium is generally used for storing an operating system and various types of application software installed in a computer device, such as program codes of the denture overlay manufacturing method in the embodiment. Further, the computer-readable storage medium may also be used to temporarily store various types of data that have been output or are to be output.
It will be apparent to those skilled in the art that the modules or steps of the embodiments of the invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A denture overlay manufacturing method is characterized by comprising the following steps:
acquiring dental body image data, denture requirement data and exposed tooth smile picture data of a patient;
analyzing the dental body image data to generate preoperative tooth three-dimensional data;
acquiring original denture veneering template data according to the denture requirement data;
adjusting the original denture veneering template data according to a preset Bezier curve calculation rule, the preoperative tooth three-dimensional data and the outcrop smile picture data, and generating target denture veneering data according to a facial optimization rule of a skin curved surface;
generating a cutting strategy of the target denture overlay according to the target denture overlay data and a preset cutting machining rule; and
and controlling cutting equipment to execute cutting operation on the tooth model to be processed according to the cutting strategy of the target denture overlay so as to manufacture the target denture overlay.
2. The denture overlay manufacturing method according to claim 1, wherein the adjusting the original denture overlay template data according to a preset Bezier curve calculation rule, the preoperative tooth three-dimensional data and the outcropping smile picture data, and generating the target denture overlay data according to a facial optimization rule of a skin curved surface, further comprises:
analyzing the preoperative three-dimensional tooth data to obtain an arch curve, volume data, position data and inclination data of each solid tooth of the patient;
adjusting the original denture overlay template data according to the volume data of each entity tooth to obtain denture overlay template data to be processed, wherein the denture overlay template data to be processed comprises volume data of at least one template tooth of the patient, the at least one template tooth corresponds to at least one entity tooth to be restored in a plurality of entity teeth, and the volume data of each template tooth is the same as the volume data of the corresponding entity tooth to be restored; and
and generating the target denture veneering data according to the denture veneering template data to be processed, the dental arch curve, the exposed smiling picture data, the position data of each entity tooth, the inclination data, the preset Bezier curve calculation rule and the facial optimization rule of the skin curved surface.
3. The denture overlay making method according to claim 2, wherein the denture overlay template data to be processed comprises first morphological data of the at least one template tooth;
generating the target denture overlay data according to the denture overlay template data to be processed, the dental arch curve, the exposed smile picture data, the position data of each entity tooth, the inclination data, the preset Bezier curve calculation rule and the facial optimization rule of the skin curved surface, and further comprising:
calculating to obtain a denture attachment curve corresponding to the at least one template tooth according to the denture attachment template data to be processed, the position data of each entity tooth, the inclination data and the preset Bezier curve calculation rule;
adjusting first form data of the at least one template tooth according to the denture attachment curve, and obtaining second form data of the at least one template tooth, wherein the second form data of the template tooth comprises three-dimensional inclination data of the template tooth in the oral cavity of the patient;
performing a positioning process on the at least one template tooth based on the arch curve and second morphology data of the at least one template tooth; and
and combining the at least one template tooth subjected to the positioning treatment and the entity tooth of the patient according to the facial optimization rule of the skin curved surface, and generating the target denture veneering data based on the exposed smile picture data.
4. The denture overlay manufacturing method according to claim 3, wherein the merging the at least one template tooth after the positioning process and the solid tooth of the patient according to the facial optimization rule of the skin curved surface, and generating the target denture overlay data based on the tooth smile picture data, further comprises:
acquiring a first boundary of the at least one template tooth after the positioning treatment and a second boundary of a target entity tooth, wherein the target entity tooth is an entity tooth adjacent to the entity tooth to be restored;
according to the first boundary and the second boundary, a plurality of section curves between the at least one template tooth and the corresponding target entity tooth are calculated;
fusing the plurality of section curves to obtain a skin curved surface;
updating second morphological data of the at least one template tooth based on the skin curved surface, and obtaining target morphological data of the at least one template tooth;
combining the at least one template tooth after the positioning treatment and the entity tooth of the patient based on the target morphological data of the at least one template tooth and the preoperative tooth three-dimensional data to obtain denture veneer design volume data; and
and generating the target denture overlay data based on the denture overlay design data and the tooth exposure smile picture data.
5. The denture overlay manufacturing method according to claim 1, wherein said generating the target denture overlay data based on the denture overlay design data and the tooth exposure smile picture data further comprises:
and adjusting the form data in the denture overlay design data based on the outcropping smile picture data to obtain the target denture overlay data.
6. The denture overlay manufacturing method according to claim 5, wherein the generating of the cutting strategy of the target denture overlay based on the target denture overlay data and the preset cutting rules further comprises:
determining the thickness of the target denture overlay and target placing position data according to the target denture overlay data and the preset cutting machining rule, wherein the target placing position data is used for representing the placing position of tooth materials in the cutting equipment;
generating a cutting strategy of the target denture overlay based on the thickness of the target denture overlay, the target placement position data and the target denture overlay data, wherein the cutting strategy of the target denture overlay comprises a cutting step strategy of the cutting device and a cutting path strategy of the cutting device.
7. The denture overlay fabrication method according to claim 6, wherein the cutting path strategy of said cutting apparatus comprises a first cutting path strategy for said dental material and a second cutting path strategy for cutting out a support bar for supporting the denture overlay;
the controlling the cutting equipment to execute cutting operation on the tooth model to be processed according to the cutting strategy of the target denture overlay so as to manufacture the target denture overlay further comprises:
performing a first cutting operation on the dental material based on the first cutting path strategy to obtain a denture overlay connecting the support rods; and
performing a second cutting operation on the remainder of the support bar located outside the denture overlay based on the second cutting path strategy to obtain the target denture overlay; wherein the thickness range of the manufactured target denture overlay is 0.15-0.6 mm.
8. A denture overlay making system, said system comprising:
the acquisition module is used for acquiring dental image data, denture requirement data and exposed smile picture data of a patient;
the analysis module is used for analyzing the dental body image data to generate preoperative tooth three-dimensional data;
the template acquisition module is used for acquiring original denture veneering template data according to the denture requirement data;
the false tooth template generation module is used for calculating a rule according to a preset Bezier curve, the preoperative tooth three-dimensional data and the outcropping smile picture data, adjusting the original false tooth veneering template data and generating target false tooth veneering data according to a facial optimization rule of a skin curved surface;
the strategy generating module is used for generating a cutting strategy of the target denture overlay according to the target denture overlay data and a preset cutting machining rule; and
and the manufacturing module is used for controlling the cutting equipment to execute cutting operation on the tooth model to be processed according to the cutting strategy of the target denture veneer so as to manufacture the target denture veneer.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program is adapted to perform the steps of the method of denture attachment according to any one of claims 1 to 7.
10. A computer-readable storage medium having stored thereon a computer program executable by at least one processor to cause the at least one processor to perform the steps of the method of denture overlay fabrication according to any one of claims 1 to 7.
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