Alveolar space management method and system based on position of adjacent contact area of prosthesis

Abstract

The invention belongs to the technical field of auxiliary medical treatment, and particularly relates to a digital alveolar space management method and system based on the position of an adjacent surface contact area of a prosthesis. According to the method, firstly, the position of the adjacent surface contact area of the ideal restoration in the jaw bone is obtained in a fitting mode, then the position is visually displayed in design software, and then the position of the adjacent surface contact area of the ideal restoration in the jaw bone is visually displayed under the guidance of visual information of the position of the adjacent surface contact area of the ideal restoration in the jaw bone. And carrying out digital alveolar spacing increment design or alveolar spacing trimming design. The invention further provides a system for implementing the method. The design method and system provided by the invention are higher in convenience and accuracy, and have a good application prospect.

Description

Technical Field

[0001] The present invention belongs to the field of auxiliary medical technology, and in particular relates to a method and system for managing alveolar intervals based on the position of proximal contact areas of restorations. Background Art

[0002] The importance of alveolar interval management is mainly reflected in the reconstruction of the gingival papilla of consecutive missing teeth in the aesthetic zone. The alveolar bone of natural teeth has a scallop-like shape that is adapted to the gingival margin and gingival papilla, and is the basis for maintaining the stability and fullness of the gingival margin and gingival papilla; the alveolar bone of dental implants is often absorbed and flattened due to long-term tooth loss, and the flat alveolar interval is difficult to support the gingival papilla, resulting in partial or complete loss of the gingival papilla. Therefore, in implant restoration, restoring the appropriate distance from the proximal contact area of ​​the restoration to the alveolar interval is a prerequisite for reconstructing the gingival papilla. For cases of consecutive missing teeth in the aesthetic zone, it is often necessary to increase and trim the alveolar interval to support the gingival papilla and achieve an ideal aesthetic restoration effect.

[0003] In the past decade, digital technology has made great progress in the field of oral implants. Under the guidance of the "restoration-oriented" concept, from preoperative implant position planning to tissue increment design, digital technology can improve the accuracy of preoperative design and reduce the sensitivity of intraoperative operation, ultimately achieving good restoration results. Although preoperative digital design can meet some clinical needs, the existing process ignores the importance of further trimming of incremental tissue after incremental surgery, especially the management of alveolar interval based on the position of the proximal contact area of ​​the restoration.

[0004] In the existing technology, the incremental design of the alveolar interval is usually carried out based on experience, and there is no clear reference point for the incremental range, so it is impossible to perform accurate alveolar interval bone augmentation; in addition, the alveolar interval trimming after bone augmentation surgery requires the surgeon to use a periodontal probe to repeatedly measure and then gradually adjust the interval bone, which has the disadvantages of high technical sensitivity, long operation time and high risk of infection. At present, there is still a lack of accurate digital design and implementation plans.

[0005] In summary, this field urgently needs to develop new digital solutions to accurately manage alveolar septal bone. Summary of the invention

[0006] In view of the problems of the prior art, the present invention provides a digital alveolar spacing management method and system based on the position of the proximal contact area of ​​the restoration.

[0007] A digital alveolar interval increment design method based on the position of the proximal contact area of ​​the restoration comprises the following steps:

[0008] Step 1, extracting the jaw model from CBCT data;

[0009] Step 2, designing an ideal restoration for the edentulous site based on the intraoral scan data, and obtaining group data of the intraoral scan and the position of the interproximal contact area of ​​the ideal restoration;

[0010] Step 3, fitting the jaw model and the grouped data using the remaining teeth to obtain the position of the interproximal contact area of ​​the ideal restoration in the jaw;

[0011] Step 4: Visualize the position of the ideal restoration's proximal contact area in the jawbone to complete the precise alveolar interval increment design.

[0012] Preferably, in step 1, the jaw model is extracted from the CBCT data by adjusting the surface critical value and a 3D data editor.

[0013] Preferably, steps 1 to 4 are implemented in EXOCAD dental software.

[0014] The present invention also provides a digital alveolar spacing increment design system based on the position of the proximal contact area of ​​the restoration, comprising:

[0015] An input module configured to input CBCT data and intraoral scan data;

[0016] An alveolar interval increment design module is configured to perform alveolar interval increment design according to the digital alveolar interval increment design method;

[0017] The output module is configured to output the design results.

[0018] The present invention also provides a digital alveolar spacing modification design method based on the position of the proximal contact area of ​​the restoration, comprising the following steps:

[0019] Step A, extracting the jaw model from the CBCT data;

[0020] Step B, designing an ideal restoration for the edentulous site based on the intraoral scan data, and obtaining group data of the intraoral scan and the position of the interproximal contact area of ​​the ideal restoration;

[0021] Step C, fitting the jawbone model and the grouped data using the remaining teeth to obtain the position of the interproximal contact area of ​​the ideal restoration in the jawbone;

[0022] Step D, in the grouped data, the gums at the position where the alveolar interval needs to be trimmed in the intraoral scan data are deleted, and the teeth in the jawbone model that overlap with the intraoral scan data are deleted;

[0023] Step E: Visually display the position of the ideal restoration proximal contact area in the jawbone, and complete the bone trimming guide design in the group data.

[0024] Preferably, in step A, the jaw model is extracted from the CBCT data by adjusting the surface threshold and a 3D data editor.

[0025] Preferably, steps A to E are implemented in EXOCAD dental software.

[0026] The present invention also provides a digital alveolar spacing modification design system based on the position of the proximal contact area of ​​the restoration, comprising:

[0027] An input module configured to input CBCT data and intraoral scan data;

[0028] An alveolar interval incremental design module is configured to perform alveolar interval trimming design according to the above-mentioned digital alveolar interval trimming design method;

[0029] The output module is configured to output the design results.

[0030] The present invention also provides a computer-readable storage medium, on which is stored: a computer program for implementing the above-mentioned digital alveolar interval increment design method, or a computer program for implementing the above-mentioned digital alveolar interval trimming design method.

[0031] In the design stage of the oral implant field (such as the digital alveolar interval increment design and digital alveolar interval trimming design involved in the present invention), how to select the appropriate reference position and display it visually in real time in the design software is a key issue in solving the accuracy of the design. The present invention constructs a new method flow for alveolar interval management, which can use the interproximal contact area of ​​the ideal restoration as a visual reference position for the design and accurately display it in the design software, providing a new method for alveolar interval increment and trimming design, overcoming the problem of inaccurate increment and trimming range in the existing alveolar interval management design, and realizing real-time visual, measurable and accurate alveolar interval management. It can effectively improve the convenience and accuracy of alveolar interval management design. Therefore, the present invention has a good application prospect.

[0032] Obviously, according to the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, other various forms of modification, replacement or change may be made.

[0033] The above contents of the present invention are further described in detail below through specific implementation methods in the form of embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following examples. All technologies realized based on the above contents of the present invention belong to the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1Schematic diagram of the process of Example 1 and Example 2 of the present invention.

[0035] Figure 2 This is an example diagram of extracting a jaw model from CBCT data in Example 1.

[0036] Figure 3 This is an example diagram of designing an ideal restoration based on intraoral scan data in Example 1.

[0037] Figure 4 This is an example diagram of the precise position of the interproximal contact area of ​​the ideal restoration in Example 1 in the jawbone.

[0038] Figure 5 This is an example diagram of completing the bone augmentation design in Example 1 with the position of the ideal proximal contact area of ​​the restoration visualized.

[0039] Figure 6 This is an example diagram of extracting a jaw model from CBCT data in Example 2.

[0040] Figure 7 This is an example diagram of designing an ideal restoration based on intraoral scan data in Example 2.

[0041] Figure 8 This is an example diagram of using the remaining teeth to fit the jaw model, intraoral scanning data, and ideal restoration in Example 2.

[0042] Fig. 9 This is an example diagram of teeth overlapping with the intraoral scan data in the gum and jawbone model in Example 2 that are deleted from the intraoral scan data where alveolar spacing trimming is required.

[0043] Fig.10 This is an example diagram of completing the design of the bone trimming guide in Example 2 with the position of the ideal proximal contact area of ​​the restoration visualized. DETAILED DESCRIPTION

[0044] It should be noted that the algorithms of data collection, transmission, storage and processing steps not specifically described in the embodiments, as well as the hardware structure, circuit connection, etc. not specifically described can all be implemented through the contents disclosed in the prior art.

[0045] Example 1 Digital alveolar spacing increment design based on the position of the proximal contact area of ​​the restoration

[0046] The method flow of this embodiment is as follows Figure 1 As shown, the following steps are included:

[0047] Step 1: Import the DCM file of CBCT data into EXOCAD dental, extract the jaw model by adjusting the surface threshold and 3D data editor, and export it as an STL file (such as Figure 2 ).

[0048] Step 2: According to the requirements of oral restoration design, EXOCAD dental is used to design the ideal restoration of the missing teeth site on the intraoral scan data, and the intraoral scan and the ideal restoration interproximal contact area position data are obtained, which are exported as STL files (such as Figure 3 ).

[0049] Step 3: Input the jaw model obtained in step 1 and the group data obtained in step 2 into EXOCAD dental, fit the two according to the remaining tooth morphology, and obtain the precise position of the interproximal contact area of ​​the ideal restoration in the three-dimensional space of the jaw model (such as Figure 4 ).

[0050] Step 4: In EXOCAD dental, the position of the ideal proximal contact area of ​​the restoration in the jaw is visualized, and the virtual bone increment of the alveolar interval is applied according to the position of the ideal proximal contact area of ​​the restoration to complete the incremental design (such as Figure 5 ).

[0051] Through the above method, virtual bone augmentation can be performed on the alveolar interval while the position of the interproximal contact area of ​​the ideal restoration is visible, which makes the alveolar interval bone augmentation more accurate.

[0052] Example 2 Digital alveolar interval trimming design based on the position of the proximal contact area of ​​the restoration

[0053] The method flow of this embodiment is as follows Figure 1 As shown, the following steps are included:

[0054] Step A: Import the DCM file of CBCT data into EXOCAD dental, extract the jaw model by adjusting the surface threshold and 3D data editor, and export it as STL file (such as Figure 6 ).

[0055] Step B: According to the requirements of oral restoration design, EXOCAD dental is used to design the ideal restoration of the missing teeth on the intraoral scan data, and the intraoral scan and the ideal restoration interproximal contact area position data are obtained, which are exported as STL files (such as Figure 7 ).

[0056] Step C: Input the STL file of the jawbone model obtained in step A and the group data obtained in step B into EXOCADdental, fit the two according to the remaining tooth morphology, and obtain the precise position of the interproximal contact area of ​​the ideal restoration in the three-dimensional space of the jawbone model (such as Figure 8 ).

[0057] Step D: In the EXOCAD dental described in step C, the gums of the part where the alveolar interval needs to be trimmed in the intraoral scan data are deleted, and the teeth overlapping with the intraoral scan data in the jaw model are deleted, and the obtained grouped data are exported as an STL file (such as Fig. 9 ).

[0058] Step E: Input the STL file of the group data obtained in step D into EXOCAD dental to visualize the position of the ideal proximal contact area of ​​the restoration in the jawbone. Based on the design principle of the distance between the alveolar bone and the proximal contact area of ​​the restoration, use the virtual gingival design tool to draw a bone trimming guide in the group data to complete the alveolar interval trimming design (such as Fig.10 ).

[0059] Through the above method, the bone trimming guide can be accurately designed under the condition that the position of the ideal restoration proximal contact area is visible, and the alveolar interval trimming can be accurately guided.

[0060] It can be seen from the above embodiments that the present invention realizes a method for alveolar interval increment design and alveolar interval trimming design under the condition that the position of the ideal restoration proximal contact area is visible, which can achieve more accurate alveolar interval design and has good application prospects.

Claims

1. A digital alveolar interval increment design method based on the position of the proximal contact area of ​​the restoration, characterized in that: The steps include: Step 1, extracting the jaw model from CBCT data; Step 2, designing an ideal restoration for the edentulous site based on the intraoral scan data, and obtaining group data of the intraoral scan and the position of the interproximal contact area of ​​the ideal restoration; Step 3, fitting the jaw model and the grouped data using the remaining teeth to obtain the position of the interproximal contact area of ​​the ideal restoration in the jaw; Step 4: Visualize the position of the ideal restoration's proximal contact area in the jawbone to complete the precise alveolar interval increment design.

2. The digital alveolar spacing increment design method according to claim 1, characterized in that: In step 1, the jaw model is extracted from the CBCT data by adjusting the surface threshold and the 3D data editor.

3. The digital alveolar spacing increment design method according to claim 1, characterized in that: Steps 1 to 4 are implemented in EXOCAD dental software.

4. A digital alveolar interval increment design system based on the position of the proximal contact area of ​​the restoration, characterized in that: include: An input module configured to input CBCT data and intraoral scan data; An alveolar interval incremental design module, configured to perform alveolar interval incremental design according to the digital alveolar interval incremental design method according to any one of claims 1 to 3; The output module is configured to output the design results.

5. A digital alveolar interval trimming design method based on the position of the proximal contact area of ​​the restoration, characterized in that: The steps include: Step A, extracting the jaw model from the CBCT data; Step B, designing an ideal restoration for the edentulous site based on the intraoral scan data, and obtaining group data of the intraoral scan and the position of the interproximal contact area of ​​the ideal restoration; Step C, fitting the jawbone model and the grouped data using the remaining teeth to obtain the position of the interproximal contact area of ​​the ideal restoration in the jawbone; Step D, in the grouped data, the gums at the position where the alveolar interval needs to be trimmed in the intraoral scan data are deleted, and the teeth in the jawbone model that overlap with the intraoral scan data are deleted; Step E: Visually display the position of the ideal restoration proximal contact area in the jawbone, and complete the bone trimming guide design in the group data.

6. The digital alveolar spacing modification design method according to claim 5, characterized in that: In step A, the jaw model is extracted from the CBCT data by adjusting the surface threshold and the 3D data editor.

7. The digital alveolar spacing modification design method according to claim 5, characterized in that: Steps A to E are implemented in EXOCAD dental software.

8. A digital alveolar interval trimming design system based on the position of the proximal contact area of ​​the restoration, characterized in that: include: An input module configured to input CBCT data and intraoral scan data; An alveolar interval incremental design module, configured to perform alveolar interval trimming design according to the digital alveolar interval trimming design method according to any one of claims 5 to 7; The output module is configured to output the design results.

9. A computer-readable storage medium, characterized in that: Stored thereon are: a computer program for implementing the digital alveolar interval increment design method described in any one of claims 1-3, or a computer program for implementing the digital alveolar interval trimming design method described in any one of claims 5-7.

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