Manufacturing method of step-by-step filling guide plate system for black triangle repair
Through three-dimensional scanning and printing technology, the step-by-step filling guide system is produced, which solves the problem of precise filling in the repair of black triangle composite resin, and achieves efficient and aesthetic restoration effects.
Patent Information
- Application Number
- CN202510764997.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-10
- Publication Date
- 2025-07-11
AI Technical Summary
In the direct bonding and repair of black triangle composite resin, accurate, quantitative and efficient filling and forming cannot be achieved, and the adjacent areas are small and concave, which increases the filling difficulty.
Three-dimensional optical scanning, imaging examination, computer-aided design and three-dimensional printing technology are used to produce a step-by-step filling guide system, including the guide main body and personalized wedges, and precise replica of the adjacent area and lip and tongue surface morphology is achieved through injection molding.
The precise and quantitative filling and forming of the black triangle area is achieved, which avoids guide plate deformation and resin spillover, and improves the aesthetic effect and forming accuracy of repair.
Smart Images
Figure CN120284495A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of dental restoration, and particularly relates to a method for manufacturing a step-by-step filling guide plate system for black triangle restoration. Background Art
[0002] The recession of the gingival papilla will cause the exposure of the interdental space of the teeth, forming an open gingival embrasure. In the anterior tooth area, a black triangle will be formed, which is a common clinical problem. The existence of the black triangle not only significantly damages the aesthetic effect, but also is prone to health problems such as plaque and calculus accumulation and food impaction. In severe cases, it may even cause speech disorders. At present, the main treatment methods for black triangles in vital anterior teeth include periodontal surgery, orthodontic treatment, porcelain veneer restoration, and hyaluronic acid injection. The above methods have deficiencies in terms of trauma, treatment course, cost, and predictability of curative effect.
[0003] Due to its advantages such as non-invasiveness, short treatment course, and economy, the composite resin direct bonding restoration technology has good application prospects for closing black triangles. However, there are the following problems in the direct bonding restoration of black triangle composite resin. The shape of the adjacent surface depends on the prefabricated adjacent surface forming system, and it is impossible to accurately and quantitatively control the distance between the adjacent area and the alveolar ridge crest in a personalized manner. This distance is the key factor for whether the gingival papilla can fill the black triangle. The shape of the labiolingual surface depends on the experience of the operator, and accurate shaping cannot be achieved. In recent years, scholars at home and abroad have explored the use of tooth filling and shaping guidance technology to assist in improving the accuracy and filling efficiency of composite resin direct bonding restoration. However, the research focuses on teeth with damaged adjacent areas or teeth that do not need to restore adjacent contacts, and there is no report on the research of black triangle filling and shaping guidance.
[0004] When performing direct bonding restoration of black triangle composite resin, due to the existence of the adjacent area, the space is narrow, the undercuts are obvious, and the field of vision is limited, which significantly increases the difficulty of direct filling and shaping. In recent years, with the continuous development of digital technology and the increasing improvement of guide plate technology in clinical applications, it provides a more accurate and efficient treatment option for complex tooth filling restorations. In the direct bonding restoration of black triangle composite resin, whether it is possible to achieve accurate, quantitative, and efficient filling and shaping through the assistance of digital guide plate technology is an important issue worthy of attention. Summary of the Invention
[0005] In order to solve the above problems, the present invention adopts the following technical solutions: A method for manufacturing a step-by-step filling guide plate system for black triangle restoration, comprising the following steps: S1. Obtain the three-dimensional surface data of the black triangle dentition through three-dimensional optical scanning, and obtain the height information of the alveolar ridge crest through imaging examination; S2. Based on the three-dimensional surface data, perform computer-aided design to obtain the data of the digital wax pattern; S3. Based on the digital wax pattern, fabricate the guide plate body and dental models in various states; S4. Based on the guide plate body and the dental models, injection mold the wedge for filling the tooth.
[0006] Further, the three-dimensional optical scanning in step S1 is performed by using an intraoral three-dimensional optical scanner for intraoral scanning or performing three-dimensional optical scanning on the taken dental impression / model.
[0007] Further, the imaging examination in step S1 is one of the parallel projection periapical radiograph with a radiopaque calibrator added or CBCT.
[0008] Further, in step S2, based on the three-dimensional surface data, perform computer-aided design with the standard that the distance from the adjacent point to the alveolar ridge crest is 5 mm to obtain the data of the digital wax pattern.
[0009] Further, for the three-dimensional surface data in step S2, computer-aided design of the mesial surface morphology and the labiolingual surface morphology of the black triangle bilateral teeth is performed by using reverse engineering technology.
[0010] Further, the specific steps of fabricating the guide plate body and dental models in various states in step S3 are as follows: S31. Three-dimensionally print the teeth on the left side of the target morphology, the teeth on the right side of the target morphology, and the dental arch model including the alveolar sockets of the teeth on the left side and the right side; S32. Fabricate the guide plate body by using different techniques. Locate the teeth on the left side of the target morphology and the teeth on the right side of the target morphology in the dental arch model, and press the guide plate body with a thermoplastic membrane; or fabricate the guide plate body by using computer-aided design and three-dimensional printing technology based on the design data of the wax pattern.
[0011] Further, the specific steps of injection molding the wedge for filling the tooth in step S4 are as follows: S41. Three-dimensionally print the teeth on the right side of the original morphology. Based on the guide plate body, the teeth on the left side of the target morphology printed three-dimensionally, the teeth on the right side of the original morphology, and the dental arch model, injection mold the wedge for filling the tooth on the left side; S42. Based on the guide plate body, the teeth on the left side of the target morphology printed three-dimensionally, the teeth on the right side of the target morphology, and the dental arch model, injection mold the wedge for filling the tooth on the right side.
[0012] Further, the specific steps of step S41 are as follows: S411. Three-dimensionally print the teeth on the right side of the original morphology; S412. Position the left tooth of the target form, the right tooth of the original form, and the guide plate body printed in three dimensions in the dental arch model; S413. Use injection molding technology to produce a personalized wedge for filling and repairing the left tooth.
[0013] Further, the specific steps of step S42 are as follows: S421. Position the left tooth of the target form, the right tooth of the target form, and the guide plate body printed in three dimensions in the dental arch model; S422. Use injection molding technology to produce a personalized wedge for filling and repairing the right tooth. Beneficial effects
[0014] Through digital technologies (such as three-dimensional scanning, digital design, reverse engineering technology, three-dimensional printing, etc.) and injection molding technology, the present invention manufactures a step-by-step filling guide plate system for black triangles, which can avoid problems such as guide plate deformation and edge resin overflow, realize the precise replication of the design information of the digital wax pattern in the black triangle area, and meet the requirements of both dental aesthetics and forming accuracy. Description of the drawings
[0015] Figure 1 is a flowchart of the present invention; Figure 2 is a schematic diagram of the design and manufacture of the step-by-step filling guide plate system.
[0016] In the figure: 1. Guide plate body; 2. Wedge for the left tooth; 3. Wedge for the right tooth. Detailed implementation manners
[0017] Example 1
[0018] Reference Figure 1 - Figure 2 , a manufacturing method of a step-by-step filling guide plate system for black triangle repair, comprising the following steps: S1. Obtain the three-dimensional surface data of the black triangle dental arch through three-dimensional optical scanning, and obtain the height information of the alveolar ridge crest through imaging examination; S2. Based on the three-dimensional surface data, perform computer-aided design to obtain the data of the digital wax pattern; S3. Based on the digital wax pattern, manufacture the guide plate body 1 and dental shape models in various states; S4. Based on the guide plate body 1 and the dental shape models, injection mold wedges for filling teeth.
[0019] Preferably, in step S1, the three-dimensional optical scanning is to perform intraoral scanning using an intraoral three-dimensional optical scanner or perform three-dimensional optical scanning on the taken dental impression / model.
[0020] Preferably, in step S1, the imaging examination is one of parallel projection periapical films or CBCTs with radiopaque calibrators added.
[0021] Preferably, in step S2, based on the three-dimensional surface data, computer-aided design is performed according to the standard that the distance from the adjacent point to the alveolar ridge crest is 5 mm to obtain the data of the digital wax pattern.
[0022] In this embodiment, the distance from the coronal landmark to the alveolar ridge crest is measured on the periapical film or CBCT. According to the standard that the distance from the adjacent point to the alveolar ridge crest is 5 mm, this distance minus 5 mm is used as the distance from the coronal landmark to the adjacent point.
[0023] Preferably, for the three-dimensional surface data in step S2, computer-aided design of the mesial and distal surfaces and the labial and lingual surfaces of the teeth with black triangles is performed using reverse engineering technology.
[0024] In this embodiment, the mesial and distal surfaces of the teeth with black triangles include the morphology of the contact area and the contact strength.
[0025] Preferably, the specific steps for fabricating the guide plate body 1 and dental models in various states in step S3 are as follows: S31. Three-dimensionally print the left tooth of the target morphology, the right tooth of the target morphology, and the dental arch model including the alveolar sockets of the left and right teeth; S32. Fabricate the guide plate body 1 using different techniques. Position the left tooth of the target morphology and the right tooth of the target morphology in the dental arch model (based on the three-dimensionally printed wax pattern), and press the guide plate body using a thermoplastic membrane; or fabricate the guide plate body based on the design data of the wax pattern using computer-aided design and three-dimensional printing techniques.
[0026] In this embodiment, in step S32, a thermoplastic hard membrane with a thickness of 0.5 - 0.8 mm is used to press the guide plate body 1.
[0027] Preferably, the specific steps for injection molding the wedges for filling the teeth in step S4 are as follows: S41. Three-dimensionally print the right tooth of the original morphology. Based on the guide plate body, the left tooth of the target morphology, the right tooth of the original morphology, and the dental arch model, injection mold the wedge 2 for filling the left tooth; S42. Based on the guide plate body, the left tooth of the target morphology, the right tooth of the target morphology, and the dental arch model, injection mold the wedge 3 for filling the right tooth.
[0028] In this embodiment, polyether rubber impression material is used both when filling the wedge 2 for the left tooth in step S41 and when filling the wedge 3 for the right tooth in step S42.
[0029] Preferably, the specific steps of step S41 are as follows: S411. Three-dimensionally print the right tooth in the original form; S412. Position the left tooth in the target form, the right tooth in the original form, and the guide plate body in the dental arch model by three-dimensional printing; S413. Use injection molding technology to manufacture a personalized wedge for filling and repairing the left tooth.
[0030] Preferably, the specific steps of step S42 are as follows: S421. Position the left tooth in the target form, the right tooth in the target form, and the guide plate body in the dental arch model by three-dimensional printing; S422. Use injection molding technology to manufacture a personalized wedge for filling and repairing the right tooth.
[0031] As described above, it is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A manufacturing method of a step-by-step filling guide plate system for black triangle repair, characterized in that, It includes the following steps: S1. Obtain the three-dimensional surface data of the black triangle dentition through three-dimensional optical scanning, and obtain the height information of the alveolar ridge crest through imaging examination; S2. Based on the three-dimensional surface data, conduct computer-aided design to obtain the data of the digital wax pattern; S3. Based on the digital wax pattern, fabricate the guide plate body and dental models in various states; S4. Based on the guide plate body and the dental models, injection mold the wedges for filling teeth.
2. The manufacturing method of a step-by-step filling guide plate system for black triangle repair according to claim 1, characterized in that The three-dimensional optical scanning in step S1 is intraoral scanning using an intraoral three-dimensional optical scanner or three-dimensional optical scanning of the taken dental impression / model.
3. The manufacturing method of a step-by-step filling guide plate system for black triangle repair according to claim 1, characterized in that, The imaging examination in step S1 is one of the parallel projection periapical radiograph with a radiopaque calibrator added or CBCT.
4. The manufacturing method of a step-by-step filling guide plate system for black triangle repair according to claim 1, wherein, In step S2, based on the three-dimensional surface data, conduct computer-aided design with the standard that the distance from the adjacent contact point to the alveolar ridge crest is 5 mm to obtain the data of the digital wax pattern.
5. The manufacturing method of a step-by-step filling guide plate system for black triangle repair according to claim 4, characterized in that, For the three-dimensional surface data in step S2, use reverse engineering technology to conduct computer-aided design of the mesial and distal surfaces and the labial and lingual surfaces of the teeth on both sides of the black triangle.
6. The manufacturing method of a step-by-step filling guide plate system for black triangle repair according to claim 1, characterized in that, The specific steps for fabricating the guide plate body and dental models in various states in step S3 are as follows: S31. Three-dimensionally print the teeth on the left side of the target morphology, the teeth on the right side of the target morphology, and the dental arch model including the alveolar sockets of the teeth on the left and right sides; S32. Fabricate the guide plate body using different techniques. Locate the teeth on the left side of the target morphology and the teeth on the right side of the target morphology in the dental arch model, and press the guide plate body using a thermoplastic membrane; or fabricate the guide plate body based on the design data of the wax pattern using computer-aided design and three-dimensional printing technology.
7. The manufacturing method of a step-by-step filling guide plate system for black triangle repair according to claim 6, characterized in that, The specific steps for injection molding the wedges for filling teeth in step S4 are as follows: S41. Three-dimensionally print the teeth on the right side of the original morphology. Based on the guide plate body, the three-dimensionally printed teeth on the left side of the target morphology, the teeth on the right side of the original morphology, and the dental arch model, injection mold the wedges for filling the teeth on the left side; S42. Based on the guide plate body, the three-dimensionally printed teeth on the left side of the target morphology, the teeth on the right side of the target morphology, and the dental arch model, injection mold the wedges for filling the teeth on the right side.
8. The manufacturing method of a step-by-step filling guide plate system for black triangle repair according to claim 7, characterized in that, The specific steps of step S41 are as follows: S411. Three-dimensionally print the teeth on the right side of the original morphology; S412. Locate the three-dimensionally printed teeth on the left side of the target morphology, the teeth on the right side of the original morphology, and the guide plate body in the dental arch model; S413. Use injection molding technology to fabricate personalized wedges for filling and repairing the teeth on the left side.
9. The manufacturing method of a step-by-step filling guide plate system for black triangle repair according to claim 7, characterized in that, The specific steps of step S42 are as follows: S421. Locate the three-dimensionally printed teeth on the left side of the target morphology, the teeth on the right side of the target morphology, and the guide plate body in the dental arch model; S422. Use injection molding technology to fabricate personalized wedges for filling and repairing the teeth on the right side.