CN110811873A - Digital molar occlusal surface dental caries repair method - Google Patents
Digital molar occlusal surface dental caries repair method Download PDFInfo
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- CN110811873A CN110811873A CN201911194013.6A CN201911194013A CN110811873A CN 110811873 A CN110811873 A CN 110811873A CN 201911194013 A CN201911194013 A CN 201911194013A CN 110811873 A CN110811873 A CN 110811873A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/20—Repairing attrition damage, e.g. facets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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Abstract
The invention belongs to the technical field of tooth restoration, and discloses a digital molar occlusal surface dental caries restoration method. The invention comprises the following steps: acquiring a digital three-dimensional model of the decayed tooth to be repaired in the human mouth; obtaining an occlusal surface to be repaired according to the current three-dimensional model; obtaining an ideal occlusal surface according to the current occlusal surface to be repaired, and then constructing a guide plate model; manufacturing a guide plate entity according to the current guide plate model; the current template entity is used to complete the repair of the caries currently being repaired. The invention adopts the digital technology to manufacture the guide plate entity to further realize the caries restoration, reduces the dependence of the caries restoration on the doctor technology, avoids the inconvenience of manual adjustment of occlusal surface running-in by the doctor by means of the shaping of the filling body by the guide plate entity, reduces the wear to healthy teeth in the restoration process, reduces the restoration time, greatly improves the efficiency of the caries restoration, and is suitable for popularization and use.
Description
Technical Field
The invention belongs to the technical field of tooth restoration, and particularly relates to a digital molar occlusal surface dental caries restoration method.
Background
The decayed tooth is a high-incidence disease of human oral cavity, the decayed tooth is easy to be easily generated at the occlusal surface of the molar teeth due to a large amount of fissure cracks on the surface of the molar teeth, and the decayed tooth is in latent progress below the enamel surface by taking the bottom of the fissure cracks as a starting point, so that the cold and hot discomfort of the teeth of a patient and the occlusal pain are caused. The shape of the occlusal surface of the dental caries is usually relatively intact in the early and middle stages of the onset of the caries, and the surface enamel is cracked under the action of occlusal force to form occlusal surface defects along with the progression of the caries. After the caries problem is found, filling treatment needs to be carried out after a decayed tooth body (a prepared hole) is ground and removed from a tooth, the decayed tooth body after the decayed tooth is prepared with the hole generally has large-area defect, and a doctor uses tooth color composite resin during filling to carry out shape stacking molding by referring to the shapes of the same tooth and the remained tooth body on the opposite side according to subjective experience; meanwhile, some foreign experts begin to use flowing resin or silicon rubber to make a seal in the mouth, copy the relatively complete form of the occlusal surface of teeth by using the seal, remove caries and prepare holes, and then restore the original form by using the seal.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
a. the shape of the occlusal surface cannot be accurately repaired when the composite resin is used for direct plastic stacking;
b. when the composite resin is used for direct plastic stacking, occlusal surface occlusion contact of molars cannot be accurately recovered;
c. because the color of the filling material is similar to the color of the teeth, the surrounding normal tooth tissues are easy to be accidentally injured when the shape of the prosthesis or occlusion adjustment is carried out, and complications such as postoperative sensitivity and the like are caused;
d. when the existing stamping method is used for repairing decayed teeth, the seal is inconvenient to shape due to the narrow space in the mouth of a patient, and is very easy to be interfered by saliva of the patient, and meanwhile, the stamping method cannot be accurately put in place, so that a bad restoration body is easy to form;
e. both the direct repair method and the seal method have higher requirements on the proficiency of clinicians.
Disclosure of Invention
The present invention aims to solve at least one of the above technical problems to a certain extent.
Therefore, the invention aims to provide a digital repairing method for dental caries on an occlusal surface of molar teeth, which can digitalize and process the repairing of the dental caries on the occlusal surface of the molar teeth, realize accurate repairing of the dental caries and reduce the technical sensitivity.
The technical scheme adopted by the invention is as follows:
a digital molar occlusal surface dental caries repair method comprises the following steps:
acquiring a digital three-dimensional model of the decayed tooth to be repaired in the human mouth;
obtaining an occlusal surface to be repaired according to the current three-dimensional model;
obtaining an ideal occlusal surface according to the current occlusal surface to be repaired, and then constructing a guide plate model;
manufacturing a guide plate entity according to the current guide plate model;
the current template entity is used to complete the repair of the caries currently being repaired.
Preferably, when the ideal occlusal surface of any occlusal surface to be repaired is calculated, the specific steps are as follows:
acquiring occlusal surface information according to the current three-dimensional model;
obtaining an occlusal surface to be repaired according to the current occlusal surface information, wherein one dental caries to be repaired corresponds to the occlusal surface to be repaired;
judging whether the occlusal surface to be repaired has obvious defects or not, if so, acquiring the template occlusal surface of the same tooth corresponding to the occlusal surface to be repaired, and if not, taking the occlusal surface to be repaired as an ideal occlusal surface;
then fitting the occlusal surface of the current template on the occlusal surface to be repaired;
and comparing the occlusal surface of the current template with the fitted occlusal surface to be repaired, and removing the part of the occlusal surface of the template, which is overlapped with the occlusal surface to be repaired, so as to obtain the ideal occlusal surface.
Preferably, after comparing the occlusal surface of the current template with the occlusal surface to be repaired, the method further comprises the following steps:
removing the overlapped part of the occlusal surface of the template and the occlusal surface to be repaired to obtain an initial occlusal surface;
and carrying out simulated occlusion test on the three-dimensional model containing the initial occlusal surface, judging whether the occlusion test passes or not, if so, taking the current initial occlusal surface as an ideal occlusal surface, and if not, adjusting the initial occlusal surface.
Preferably, when the initial occlusal surface is adjusted, the occlusal contact point is firstly obtained, then the occlusal high point of the initial occlusal surface is reduced, and then the simulated occlusal test is repeated until the occlusal test is passed.
Preferably, the bottom of the guide plate model is a female mold corresponding to the ideal occlusal surface, and the top of the guide plate model is provided with a clamping part in an extending manner.
Preferably, when the current guide plate entity is used for completing the repair of the dental caries to be repaired, the current guide plate entity is used for shaping the filling body of the dental caries to be repaired and enabling the filling body to be solidified at the hole preparation part of the dental caries to be repaired.
Preferably, the guide plate model is constructed by using EXOCAD software.
Preferably, the guide plate entity is manufactured by adopting a 3D printing technology; when the manufacturing of the guide plate entity is completed according to the current guide plate model, firstly, a file containing the guide plate model is converted into an STL file of a standard mosaic language, then the STL file is sent to a 3D printing device, and the 3D printing device completes the printing of the guide plate entity according to the guide plate model in the STL file.
The invention has the beneficial effects that:
the invention adopts the digital technology to manufacture the guide plate entity so as to realize the restoration of the molar occlusal surface decayed tooth, reduces the dependence of the restoration of the decayed tooth on the doctor technology, avoids the inconvenience of the doctor for manually adjusting the occlusal surface grinding by sizing the filling body by the guide plate entity, ensures that the healthy tooth is less worn in the restoration process, reduces the restoration time, greatly improves the restoration efficiency of the decayed tooth, reduces the technical sensitivity and is suitable for popularization and use.
Other advantageous effects of the present invention will be described in detail in the detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block flow diagram of embodiment 1.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. When the terms "comprises," "comprising," "includes," and/or "including" are used herein, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
It should be understood that specific details are provided in the following description to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example 1:
as shown in fig. 1, the present embodiment provides a digital method for repairing dental caries on occlusal surface of molar teeth, comprising the following steps:
acquiring a digital three-dimensional model of the decayed tooth to be repaired in the human mouth;
obtaining an occlusal surface to be repaired according to the current three-dimensional model;
obtaining an ideal occlusal surface according to the current occlusal surface to be repaired, and then constructing a guide plate model;
manufacturing a guide plate entity according to the current guide plate model;
the current template entity is used to complete the repair of the caries currently being repaired.
The embodiment adopts the digital technology to manufacture the guide plate entity so as to realize the caries restoration, reduces the dependence of the caries restoration on the doctor technology, avoids the inconvenience of manual adjustment of occlusal surface running-in by the doctor by means of the shaping of the filling body by the guide plate entity, ensures that the healthy teeth are abraded less in the restoration process, reduces the restoration time and greatly improves the efficiency of the caries restoration.
Example 2
The technical solution provided by this embodiment is a further improvement on the basis of the technical solution of embodiment 1, and the technical features of this embodiment that are different from those of embodiment 1 are:
in this embodiment, when calculating the ideal occlusal surface of any occlusal surface to be repaired, the specific steps are as follows:
acquiring occlusal surface information according to the current three-dimensional model;
obtaining an occlusal surface to be repaired according to the current occlusal surface information, wherein one dental caries to be repaired corresponds to the occlusal surface to be repaired;
judging whether the occlusal surface to be repaired has obvious defects or not, if so, acquiring the template occlusal surface of the same tooth corresponding to the occlusal surface to be repaired, and if not, taking the occlusal surface to be repaired as an ideal occlusal surface; and if the occlusal surface of the same tooth corresponding to the current occlusal surface to be restored is not the template occlusal surface, automatically comparing and selecting a proper tooth form from a software database in which a mass of tooth models are prestored.
Then fitting the occlusal surface of the current template on the occlusal surface to be repaired; the fitting is not simple covering, but two objects with high similarity are overlapped, the target object is not changed in the process, and the fitting object is covered and overlapped after being finely adjusted in the aspects of volume, shape, direction and the like under the condition of keeping the original characteristics.
And comparing the occlusal surface of the current template with the fitted occlusal surface to be repaired, and removing the part of the occlusal surface of the template, which is overlapped with the occlusal surface to be repaired, so as to obtain the ideal occlusal surface.
Example 3
The technical solution provided by this embodiment is a further improvement on the basis of the technical solution of embodiment 2, and the technical features of this embodiment that are different from those of embodiment 2 are as follows:
in this embodiment, after comparing the occlusal surface of the current template with the occlusal surface to be repaired, the method further includes the following steps:
removing the overlapped part of the occlusal surface of the template and the occlusal surface to be repaired to obtain an initial occlusal surface;
carrying out simulated occlusion testing on the three-dimensional model containing the initial occlusal surface in the electronic occlusal frame, and judging whether the occlusion testing passes or not, if so, taking the current initial occlusal surface as an ideal occlusal surface, and if not, adjusting the initial occlusal surface; wherein the content of the first and second substances,
as one of the preferred embodiments, when adjusting the initial occlusal surface, the occlusal contact point is first obtained, then the occlusal high point of the initial occlusal surface is lowered, and then the simulated occlusal test is repeated until the occlusal test is passed.
As another preferred embodiment, a simulated bite test is performed on a three-dimensional model containing an initial bite surface in an electronic articulator; the electronic articulator is designed based on the principle of articulator, is an instrument for fixing the upper and lower articulators and the model, is provided with parts and joints equivalent to human chewing organs, can simulate mandible movement to a certain extent, is a digital model, simulates a solid articulator through software, and measures and evaluates the digital model.
Example 4
The technical solution provided by this embodiment is a further improvement made on the basis of any one of embodiments 1 to 3, and the technical features of this embodiment that are different from any one of embodiments 1 to 3 are as follows:
in this embodiment, the bottom of the guide plate model is a female die corresponding to the ideal occlusal surface, and the top of the guide plate model is provided with a clamping part in an extending manner; the female die of the ideal occlusal surface is the occlusal surface which can reach the preset occlusion relation with the ideal occlusal surface, and the female die of the ideal occlusal surface can be tightly attached to the ideal occlusal surface, so that the expected form can be restored as high as possible during treatment, and the occlusion relation between the dental caries repaired at the later stage and other teeth can be ensured to be free from problems.
Example 5
The technical solution provided by this embodiment is a further improvement made on the basis of any one of embodiments 1 to 4, and the technical features of this embodiment that are different from any one of embodiments 1 to 4 are as follows:
in the embodiment, when the current guide plate entity is used for completing the repair of the dental caries to be repaired, the current guide plate entity is used for shaping the filling body of the dental caries to be repaired and enabling the filling body to be solidified at the hole preparation part of the dental caries to be repaired; during specific operation, after the filling body is shaped, the guide plate entity needs to be taken down, the edge of the filling body is trimmed, and then the filling body is solidified, so that the solidification of the filling body can be realized but is not limited to the adoption of a light curing lamp.
Example 6
The technical solution provided by this embodiment is a further improvement made on the basis of any one of embodiments 1 to 5, and the technical features of this embodiment that are different from any one of embodiments 1 to 5 are as follows:
in this embodiment, the EXOCAD software is used for constructing the guide plate model; the EXOCAD software is common special software for digital restoration of the oral cavity, has complete functions, is provided with a massive database of tooth forms, is simple to operate, all related operations can be completed in the software, the EXOCAD software is compatible with output files of a current common oral cavity scanner, and data output after the design is completed can also be directly printed by 3D printing equipment.
Example 7
The technical solution provided by this embodiment is a further improvement made on the basis of any one of embodiments 1 to 6, and the technical features of this embodiment that are different from any one of embodiments 1 to 6 are as follows:
in this embodiment, the guide plate entity is manufactured by a 3D printing technology; when the manufacturing of the guide plate entity is completed according to the current guide plate model, firstly, a file containing the guide plate model is converted into an STL file of a standard mosaic language, then the STL file is sent to a 3D printing device, and the 3D printing device completes the printing of the guide plate entity according to the guide plate model in the STL file.
The embodiments described above are merely illustrative, and may or may not be physically separate, if referring to units illustrated as separate components; if reference is made to a component displayed as a unit, it may or may not be a physical unit, and may be located in one place or distributed over a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
The present invention is not limited to the above-described alternative embodiments, and various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.
Claims (8)
1. A digital molar occlusal surface dental caries repair method is characterized in that: the method comprises the following steps:
acquiring a digital three-dimensional model of the decayed tooth to be repaired in the human mouth;
obtaining an occlusal surface to be repaired according to the current three-dimensional model;
obtaining an ideal occlusal surface according to the current occlusal surface to be repaired, and then constructing a guide plate model;
manufacturing a guide plate entity according to the current guide plate model;
the current template entity is used to complete the repair of the caries currently being repaired.
2. The digital molar occlusal surface caries repair method according to claim 1, characterized in that: when the ideal occlusal surface of any occlusal surface to be repaired is calculated, the specific steps are as follows:
acquiring occlusal surface information according to the current three-dimensional model;
obtaining an occlusal surface to be repaired according to the current occlusal surface information, wherein one dental caries to be repaired corresponds to the occlusal surface to be repaired;
judging whether the occlusal surface to be repaired has obvious defects or not, if so, acquiring the template occlusal surface of the same tooth corresponding to the occlusal surface to be repaired, and if not, taking the occlusal surface to be repaired as an ideal occlusal surface;
then fitting the occlusal surface of the current template on the occlusal surface to be repaired;
and comparing the occlusal surface of the current template with the fitted occlusal surface to be repaired, and removing the part of the occlusal surface of the template, which is overlapped with the occlusal surface to be repaired, so as to obtain the ideal occlusal surface.
3. The digital molar occlusal surface caries repair method according to claim 2, characterized in that: after the occlusal surface of the current template is compared with the occlusal surface to be repaired, the method further comprises the following steps:
removing the overlapped part of the occlusal surface of the template and the occlusal surface to be repaired to obtain an initial occlusal surface;
and carrying out simulated occlusion test on the three-dimensional model containing the initial occlusal surface, judging whether the occlusion test passes or not, if so, taking the current initial occlusal surface as an ideal occlusal surface, and if not, adjusting the initial occlusal surface.
4. The digital molar occlusal surface caries repair method according to claim 3, characterized in that: when the initial occlusal surface is adjusted, an occlusal contact point is firstly obtained, then an occlusal high point of the initial occlusal surface is reduced, and then the simulated occlusal test is repeated until the occlusal test is passed.
5. The digital molar occlusal surface caries repair method according to claim 1, characterized in that: the bottom of the guide plate model is a female die corresponding to an ideal occlusal surface, and the top of the guide plate model is provided with a clamping part in an extending mode.
6. The digital molar occlusal surface caries repair method according to claim 5, wherein: when the current guide plate entity is used for completing the repair of the decayed tooth to be repaired, the current guide plate entity is used for shaping the filling body of the decayed tooth to be repaired and enabling the filling body to be solidified at the hole preparation part of the decayed tooth to be repaired.
7. The digital molar occlusal surface caries repair method according to any one of claims 1 to 6, wherein: and EXOCAD software is adopted for constructing the guide plate model.
8. The digital molar occlusal surface caries repair method according to any one of claims 1 to 6, wherein: the guide plate entity is manufactured by adopting a 3D printing technology; when the manufacturing of the guide plate entity is completed according to the current guide plate model, firstly, a file containing the guide plate model is converted into an STL file of a standard mosaic language, then the STL file is sent to a 3D printing device, and the 3D printing device completes the printing of the guide plate entity according to the guide plate model in the STL file.
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| CN111973309A (en) * | 2020-07-24 | 2020-11-24 | 上海交通大学医学院附属第九人民医院 | Method for manufacturing blending guide plate |
| CN113057744A (en) * | 2021-03-12 | 2021-07-02 | 深圳市速航科技发展有限公司 | Root canal therapy device with mechanical vibration and rotation dual-drive mode |
| CN113440271A (en) * | 2021-06-12 | 2021-09-28 | 杭州口腔医院集团有限公司 | CAD/CAM/SLM-3D printing composite method for dental prosthesis |
| CN114681091A (en) * | 2022-04-18 | 2022-07-01 | 四川大学 | Method and equipment for evaluating occlusion condition of dental prosthesis |
| CN117281635A (en) * | 2023-11-24 | 2023-12-26 | 四川大学 | Automatic grinding and drilling device for dental caries |
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