A method for manufacturing and using a personalized precise tooth guide plate

Abstract

The application provides a manufacturing method and a using method of a personalized precise tooth-removing guide plate, and belongs to the technical field of oral micro-invasive repair. The manufacturing method comprises the following steps: obtaining a digital impression or model of an initial state dentition and processing the digital impression or model by using a three-dimensional design software to obtain a digital diagnostic wax pattern; comparing and fitting the digital impression or model of the initial state dentition with the digital diagnostic wax pattern to design a personalized precise tooth-removing guide plate digital model; and outputting data of the personalized precise tooth-removing guide plate and 3D printing the personalized precise tooth-removing guide plate. The application is aimed at the actual situation that teeth need to be restored in appearance and function by improving the tooth shape in the case of lip (tongue) inclination or ectopia, mesial (distal) twist and incisal (occlusal) elongation. The personalized precise tooth-removing guide plate takes the expected repair effect as the target, can realize accurate evaluation before treatment and indicate the actual tooth tissue amount that needs to be removed before the in-mouth manufacturing of a diagnostic veneer, and improves the clinical diagnosis and treatment level and the patient satisfaction.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of minimally invasive dental restoration, and particularly relates to a method for manufacturing and using a personalized precise tooth-removing guide plate. BACKGROUND

[0002] With the continuous improvement of living standards, people pay more and more attention to oral health. Irregular tooth arrangement directly affects the appearance and function. In clinical practice, many patients with irregular dentition refuse orthodontic treatment due to long tooth restoration period and high cost, and are willing to choose relatively simple and rapid minimally invasive aesthetic restoration treatment to solve the problem of irregular tooth arrangement.

[0003] During the minimally invasive aesthetic restoration treatment, digital aesthetic analysis and design are needed before the treatment, and a diagnostic wax pattern is made accordingly to show the expected restoration effect. In order to enable the patient to more intuitively feel the tooth shape and aesthetic effect after restoration, and to facilitate the oral physician to further check and judge the aesthetics and function after restoration, the method of in-mouth diagnostic veneer making can be adopted. After confirming the expected restoration effect represented by the diagnostic veneer, the oral physician can perform standardized tooth preparation, effectively realizing minimally invasive aesthetic restoration. When the patient and the oral physician cannot pre-evaluate the final restoration effect through the diagnostic veneer, actual problems such as medical disputes caused by the patient's dissatisfaction with the restoration effect often occur. For patients with irregular tooth arrangement, their teeth often present ectopia, elongation, inclination or torsion, etc., and differ greatly from the tooth shape after restoration. Compared with the tooth shape after expected restoration, the excess part of the tooth tissue will interfere with the in-mouth diagnostic veneer making, affecting the aesthetic restoration effect evaluation. Therefore, precise removal of the excess part of the tooth tissue is of great significance to the minimally invasive aesthetic restoration treatment. However, conventional clinical tooth preparation largely depends on the personal experience of the oral physician and lacks objective guidance. Inappropriate removal of tooth tissue in this part can cause tooth damage due to excessive tooth removal, or in-mouth diagnostic veneer making failure or quality not meeting clinical requirements due to insufficient tooth removal.

[0004] Therefore, how to precisely remove the part of the tooth tissue that affects the in-mouth diagnostic veneer making and even the final aesthetic restoration effect, and to maximize the preservation of the remaining tooth tissue is a clinical problem that needs to be solved at present. SUMMARY

[0005] The present application provides a method for manufacturing and using a personalized precise tooth-removing guide plate to solve the actual problem that the minimally invasive restoration for patients with irregular tooth arrangement usually needs to rely on the personal experience of the operator and easily leads to poor restoration effect and increased restoration difficulty in the prior art.

[0006] In a first aspect, the application provides a method for manufacturing a personalized precise tooth-removing guide plate, comprising:

[0007] obtaining a digital impression or model of an initial state dentition;

[0008] processing the digital impression or model of the initial state dentition by using a three-dimensional design software to design a digital diagnostic wax pattern;

[0009] comparing and fitting the digital impression or model of the initial state dentition with the digital diagnostic wax pattern to design a personalized precise tooth-removing guide plate digital model;

[0010] outputting data of the personalized precise tooth-removing guide plate digital model to manufacture a personalized precise tooth-removing guide plate by 3D printing.

[0011] According to the method for manufacturing a personalized precise tooth-removing guide plate provided by the application, the step of obtaining a digital impression or model of an initial state dentition comprises:

[0012] scanning a dentition of a target patient to be repaired by using an oral digital scanner, or scanning a dentition model of the target patient to be repaired by using a digital model to obtain a digital impression or model of an initial state dentition with teeth, gums, and occlusal relationship of upper and lower dentitions.

[0013] According to the method for manufacturing a personalized precise tooth-removing guide plate provided by the application, the step of processing the digital impression or model of the initial state dentition by using a three-dimensional design software to obtain a digital diagnostic wax pattern comprises:

[0014] importing the digital impression or model of the initial state dentition into the three-dimensional design software, performing personalized oral aesthetic analysis and design on the digital impression or model of the initial state dentition based on a preset oral aesthetic standard and related parameters to obtain a virtual restoration model and a digital diagnostic wax pattern representing an expected restoration effect.

[0015] According to the method for manufacturing a personalized precise tooth-removing guide plate provided by the application, the step of comparing and fitting the digital impression or model of the initial state dentition with the digital diagnostic wax pattern to design a personalized precise tooth-removing guide plate digital model comprises:

[0016] fitting and registering the digital impression or model of the initial state dentition with the digital diagnostic wax pattern, and obtaining a tooth tissue contour model to be removed after the registration is completed;

[0017] designing the personalized precise tooth-removing guide plate digital model according to the tooth tissue contour model to be removed.

[0018] According to the application, a personalized precise tooth-removing guide plate manufacturing method is provided, which comprises the following steps of: designing a personalized precise tooth-removing guide plate digital model according to a tooth-removing tissue contour model, including:

[0019] According to the tooth-removing tissue contour model, the outermost edge of the tooth-removing tissue is continuously marked in a digital virtual software, and the inner boundary of the tooth-removing guide plate body is determined according to the outermost edge of the tooth-removing tissue;

[0020] Based on the inner boundary of the tooth-removing guide plate body, the outer boundary of the tooth-removing guide plate body is determined at a preset distance away from the tooth-removing area;

[0021] The tooth-removing guide plate tissue surface is determined between the inner boundary of the tooth-removing guide plate body and the outer boundary of the tooth-removing guide plate body, and closely adheres to the tooth surface area of the initial digital model of the dentition;

[0022] A preset thickness is determined in a direction away from the tooth-removing guide plate tissue surface, and a preset smooth shape is determined for the tooth-removing guide plate non-tissue surface;

[0023] A preset smooth shape handle is added to the tooth-removing guide plate non-tissue surface and close to the tooth incisal end;

[0024] The undercut part is eliminated, the model data outside the tooth-removing guide plate body and the tooth-removing guide plate handle is removed, and the tooth-removing guide plate shape model is obtained.

[0025] According to the application, a personalized precise tooth-removing guide plate manufacturing method is provided, which comprises the following steps of: outputting the data of the personalized precise tooth-removing guide plate digital model, and outputting the personalized precise tooth-removing guide plate by 3D printing, including:

[0026] The tooth-removing guide plate shape model data is transmitted or imported to a 3D printer to manufacture the personalized precise tooth-removing guide plate.

[0027] In a second aspect, the application further provides a personalized precise tooth-removing guide plate use method, which comprises the following steps of:

[0028] Confirming the tooth to be repaired in the oral cavity of a patient to be treated, placing the personalized precise tooth-removing guide plate on the tooth to be repaired, and completely adhering the tooth-removing guide plate tissue surface to the surface of the tooth to be repaired;

[0029] Determining and marking the tooth-removing tissue contour on the surface of the tooth to be repaired by using the tooth-removing guide plate, and removing the tooth-removing guide plate;

[0030] Based on the mark, the tooth-removing tissue outside the mark is precisely removed to obtain the remaining tooth tissue;

[0031] After the surface of the remaining dental tissue is finely polished, a diagnostic veneer is made on the remaining dental tissue.

[0032] According to the application, a personalized precise tooth-removing guide plate is provided, and a method for using the personalized precise tooth-removing guide plate is provided.

[0033] The contour of the dental tissue to be removed is determined and marked on the surface of the tooth to be repaired along the inner boundary of the tooth-removing guide plate, or the inner boundary of the tooth-removing guide plate is completely colored.

[0034] In a third aspect, the application further provides a system for manufacturing a personalized precise tooth-removing guide plate, comprising:

[0035] An acquisition module is configured to acquire a digital impression or model of an initial state of a dentition.

[0036] A processing module is configured to process the digital impression or model of the initial state of the dentition by using a three-dimensional design software to obtain a digital diagnostic wax pattern.

[0037] A fitting module is configured to compare and fit the digital impression or model of the initial state of the dentition with the digital diagnostic wax pattern to design a shape model of the personalized precise tooth-removing guide plate.

[0038] An output module is configured to output data of the digital model of the personalized precise tooth-removing guide plate, and to output the personalized precise tooth-removing guide plate by 3D printing.

[0039] In a fourth aspect, the application further provides a system for using a personalized precise tooth-removing guide plate, comprising:

[0040] A placement module is configured to confirm a tooth to be repaired in an oral cavity of a patient to be treated, and to place the personalized precise tooth-removing guide plate on the tooth to be repaired, so that a tissue surface of the personalized precise tooth-removing guide plate is completely attached to a surface of the tooth to be repaired.

[0041] A marking module is configured to determine and mark a contour of dental tissue to be removed on the surface of the tooth to be repaired by using the tooth-removing guide plate, and to remove the tooth-removing guide plate.

[0042] A removing module is configured to accurately grind and remove the dental tissue to be removed except the marking based on the marking to obtain remaining dental tissue.

[0043] An optimization module is configured to finely polish a surface of the remaining dental tissue to obtain the remaining dental tissue on which a diagnostic veneer can be made.

[0044] The application provides a personalized precise tooth-removing guide plate manufacturing method and use method. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0046] Figure 1 Fig. 1 is a flowchart of the personalized precise tooth-removing guide plate manufacturing method provided by the application;

[0047] Figure 2 Fig. 2 is a schematic diagram of the digital impression / model of the initial state dentition provided by the application;

[0048] Figure 3 Fig. 3 is a schematic diagram of the digital diagnostic wax pattern provided by the application;

[0049] Figure 4 Fig. 4 is a schematic diagram of the tooth tissue to be removed provided by the application;

[0050] Figure 5 Fig. 5 is a schematic diagram of the personalized precise tooth-removing guide plate located on the digital model of the initial state dentition provided by the application;

[0051] Figure 6 Fig. 6 is a specific structural diagram of the personalized precise tooth-removing guide plate provided by the application;

[0052] Figure 7 Fig. 7 is a flowchart of the use method of the personalized precise tooth-removing guide plate provided by the application;

[0053] Figure 8 Fig. 8 is a structural diagram of the personalized precise tooth-removing guide plate manufacturing system provided by the application;

[0054] Figure 9 Fig. 9 is a structural diagram of the personalized precise tooth-removing guide plate use system provided by the application.

[0055] Reference signs:

[0056] 1: body; 1.1: inner side boundary; 1.2: outer side boundary; 1.3: tissue surface;

[0057] 1.4 non-tissue surface; 2: handle. DETAILED DESCRIPTION

[0058] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0059] In view of the common problems existing in minimally invasive aesthetic restoration treatment of the oral cavity, the present application adopts digital technology and proposes a manufacturing method and using method of personalized precise tooth removal guide plate, which can effectively solve the problem that the range of tooth tissue that needs to be removed in advance and the tooth preparation amount cannot be accurately judged in oral clinical practice.

[0060] Figure 1 is a flowchart of the digital tooth removal guide plate manufacturing method provided by the embodiments of the present application, as shown in Figure 1 , comprising:

[0061] Step 101: obtaining a digital impression or model of an initial state dentition;

[0062] Step 102: processing the digital impression or model of the initial state dentition by using a three-dimensional design software to obtain a digital diagnostic wax pattern;

[0063] Step 103: comparing and fitting the digital impression or model of the initial state dentition with the digital diagnostic wax pattern to design a personalized precise tooth removal guide plate digital model;

[0064] Step 104: outputting data of the personalized precise tooth removal guide plate digital model to output a personalized precise tooth removal guide plate by 3D printing.

[0065] Specifically, the personalized precise tooth removal guide plate manufactured by digital design proposed by the embodiments of the present application is mainly obtained through the following key steps:

[0066] (1) First, obtain the digital impression / model of the initial state dentition of the patient;

[0067] (2) The digital impression / model of the initial state dentition is processed by using an oral three-dimensional design software to design a digital diagnostic wax pattern, that is, to present the expected restoration effect;

[0068] (3) comparing the digital impression / model of the initial state dentition with the designed digital diagnostic wax pattern, and designing a personalized precise tooth-removing guide shape model, which is personalized designed based on the expected repair effect and the actual situation of the teeth to be repaired;

[0069] (4) finally outputting the confirmed personalized precise tooth-removing guide shape model to obtain a three-dimensional tooth-removing guide.

[0070] The present application aims at the actual situation that teeth need to be restored in appearance and function by improving the tooth shape, such as lip(tongue)tilt or ectopia, mesiodistal twist, and incisal(combination)elongation, etc. The personalized precise tooth-removing guide designed and manufactured by digital technology takes the expected repair effect as the target, can realize accurate evaluation before treatment and indicate the actual amount of tooth tissue to be removed before making a diagnostic veneer in the mouth, effectively realize accurate and precise tooth preparation, avoid the influence of insufficient experience of operators, be beneficial to save the remaining tooth tissue and improve the efficiency of tooth repair, and improve the clinical diagnosis and treatment level and patient satisfaction.

[0071] Based on the above embodiment, step 101 comprises:

[0072] The dentition of the target patient to be repaired is scanned by an oral digital scanner, or the dentition model of the target patient to be repaired is scanned by a digital model to obtain a digital impression or model of the initial state dentition with teeth, gums, and occlusal relationship of upper and lower dentition.

[0073] Generally, in the embodiments of the present application, the dentition of the patient is directly scanned by an oral digital scanner, or the impression / model of the dentition of the patient is first obtained, and then the digital impression / model of the initial state dentition containing teeth, gums, and occlusal relationship of upper and lower dentition is obtained by scanning the impression / model of the dentition by an oral digital scanner, such as Figure 2 The upper and lower dentition digital impressions of the obtained digital impression / model of the initial state dentition.

[0074] Based on the above embodiment, step 102 comprises:

[0075] The digital impression or model of the initial state dentition is imported into the three-dimensional design software, and personalized oral aesthetic analysis and design are performed on the digital impression or model of the initial state dentition based on the preset oral aesthetic standard and related parameters to obtain a virtual restoration model and a digital diagnostic wax pattern representing the expected repair effect.

[0076] Specifically, the digital impression / model of the initial state dentition obtained in the foregoing embodiment is imported into a three-dimensional design software, personalized aesthetic analysis and design are performed in accordance with restoration basic principles and oral aesthetic standards and related parameters, a virtual restoration model and a digital diagnostic wax pattern representing the expected restoration effect are obtained, as shown in the digital diagnostic wax pattern schematic diagram shown in Figure 3 .

[0077] Based on the foregoing embodiment, step 103 comprises:

[0078] The digital impression or model of the initial state dentition is fitted and registered with the digital diagnostic wax pattern, and after registration is completed, a tooth tissue contour model to be removed is obtained;

[0079] According to the tooth tissue contour model to be removed, a personalized precise tooth-removing guide plate digital model is designed.

[0080] The personalized precise tooth-removing guide plate digital model is designed according to the tooth tissue contour model to be removed, comprising:

[0081] According to the tooth tissue contour model to be removed, the outermost edge of the tooth tissue to be removed is continuously marked in a digital virtual software, and the inner boundary of the tooth-removing guide plate body is determined according to the outermost edge of the tooth tissue to be removed;

[0082] Based on the inner boundary of the tooth-removing guide plate body, the outer boundary of the tooth-removing guide plate body is determined at a preset distance away from the tooth-removing region;

[0083] The tooth-removing guide plate tissue surface is determined between the inner boundary of the tooth-removing guide plate body and the outer boundary of the tooth-removing guide plate body, and close to the tooth surface region of the initial digital model of the dentition;

[0084] A preset thickness is determined in a direction away from the tooth-removing guide plate tissue surface, and a preset smooth shape is determined for the tooth-removing guide plate non-tissue surface;

[0085] A preset smooth shape handle is added to the tooth-removing guide plate non-tissue surface and close to the tooth incisal end;

[0086] The undercut portion is eliminated, the model data outside the tooth-removing guide plate body and the tooth-removing guide plate handle is removed, and the tooth-removing guide plate shape model is obtained.

[0087] Specifically, the designed digital diagnostic wax pattern and the digital impression / model of the initial state dentition are fitted using a three-dimensional design software, and after registration is completed, the tooth tissue beyond the contour of the diagnostic wax pattern dentition is the tooth tissue that needs to be removed before the diagnostic veneer is made, and the tooth tissue contour to be removed is as shown in Figure 4 .

[0088] Further, in the digital 3D virtual design software, the outermost edge of the tooth tissue exceeding a certain portion is continuously marked to delineate the range of tooth tissue to be removed, thereby obtaining the personalized inner boundary of the tooth removal guide body. Based on the digital impression / model of the initial state of the dentition, the personalized and precise outer boundary and tissue surface of the tooth removal guide body are further designed. The outer boundary of the tooth removal guide body is designed by extending a preset distance, usually more than 1 mm, from the inner boundary of the tooth removal guide body away from the tooth removal area. The tissue surface of the tooth removal guide body can be designed according to the area between the inner and outer boundaries that are close to the initial digital model of the dentition. Here, by adjusting the position of the outer boundary, the area of ​​the tissue surface of the tooth removal guide body can be changed, and the retention and stability of the tooth removal guide body can be adjusted.

[0089] A preset thickness, usually more than 1 mm, is added in the direction away from the tissue surface. After trimming, a solid tooth removal guide body and a smooth, rounded non-tissue surface are formed. The cross-section of the body can be semi-circular, semi-elliptical, trapezoidal with rounded angles, or other non-uniform shapes. The thickness of the tooth removal guide can be adjusted by the position and shape of the non-tissue surface.

[0090] In addition, after completing the design of the tooth removal guide body, cylindrical handles are designed in non-tissue surfaces near the incisal edge of the teeth and other areas that do not affect the placement of the guide, to facilitate the operator's holding and placement of the tooth removal guide. Figure 5 The image shows a personalized precision de-dentination guide plate placed on the initial state digital model of the dentition after the design is completed.

[0091] Finally, the entire dental guide is inspected and undercuts are eliminated. The design of the dental guide is improved and optimized, and model data other than the guide is removed to obtain a personalized and precise dental guide shape model.

[0092] Based on the above embodiments, step 104 includes:

[0093] The data of the personalized precision tooth removal guide plate is transmitted or imported into a 3D printer to produce the personalized precision tooth removal guide plate.

[0094] It should be noted that the embodiments of the present invention use the currently mainstream 3D printer. A 3D printer, also known as a three-dimensional printer, is a machine that uses a cumulative manufacturing technology, namely rapid prototyping technology. It uses digital model files as a basis and employs special wax materials, powdered metal or plastic and other adhesive materials to create three-dimensional objects by printing layer by layer according to a preset program.

[0095] The completed personalized precision dental removal guide plate design can be transmitted or imported into a 3D printer for fabrication to obtain a physical personalized precision dental removal guide plate. See details. Figure 6As shown, the body 1 includes an inner boundary 1.1, an outer boundary 1.2, a tissue surface 1.3 and a non-tissue surface 1.4, and it can be seen that the shape between the tissue surface 1.3 and the non-tissue surface 1.4 can be any smooth shape, and a handle 2 is arranged at the bottom of the tooth guide near the non-tissue surface 1.4, which is generally cylindrical in shape.

[0096] The personalized precise tooth removal guide has the characteristics of wide application, simple structure, easy manufacturing and use, etc., and can help the operator to quickly and accurately position the tooth tissue to be removed in advance, and also has the characteristics of realizing clinical tooth preparation visualization and precision.

[0097] Figure 7 The personalized precise tooth removal guide provided by the embodiment of the present application is a use method flowchart of the personalized precise tooth removal guide, as shown in Figure 7 As shown, it includes:

[0098] Step 201: confirming the tooth to be repaired in the oral cavity of the patient to be repaired, placing the personalized precise tooth removal guide on the tooth to be repaired, and completely adhering the tissue surface of the tooth removal guide to the surface of the tooth to be repaired;

[0099] Step 202: determining the contour of the tooth tissue to be removed on the surface of the tooth to be repaired and marking by using the tooth removal guide, and removing the tooth removal guide;

[0100] Step 203: accurately grinding the tooth tissue to be removed outside the mark based on the mark, and obtaining the remaining tooth tissue;

[0101] Step 204: after the surface of the remaining tooth tissue is finely polished, a diagnostic veneer is made on the remaining tooth tissue.

[0102] Wherein the tooth removal guide is used to determine the removal mark on the surface of the tooth to be repaired, which includes:

[0103] Determine the contour of the tooth tissue to be removed on the surface of the tooth to be repaired along the inner boundary of the body of the tooth removal guide and mark, or completely color the area covered by the inner boundary of the body of the tooth removal guide.

[0104] Specifically, after obtaining the personalized precise tooth removal guide, the patient needs to be treated with oral minimally invasive aesthetic repair, which includes:

[0105] Confirming the tooth position where the tooth tissue needs to be removed in advance in the oral cavity of the patient to be repaired, holding the handle of the personalized tooth removal guide by the operator and placing it on the tooth, checking that the tissue surface of the body of the tooth removal guide is completely adhered to the surface of the tooth, and confirming that the tooth removal guide is in place and stable;

[0106] Mark the inside boundary of the personalized tooth guide with a pencil or an oil-based pen, or color the area covered by the inside boundary completely;

[0107] After confirming the correctness of the above mark, remove the tooth guide;

[0108] Carefully remove the tooth tissue at this position according to the above mark, and polish the tooth removal surface to complete the tooth removal.

[0109] The application applies digital design to make personalized precise tooth guides, quickly and accurately judges the position and range of the excess tooth tissue to be removed, and assists in making intraoral diagnostic veneers to ensure the expected repair treatment effect of the patient.

[0110] The following describes the personalized precise tooth guide production system and use system provided by the application, and the personalized precise tooth guide production system and use system described below can be correspondingly referred to the digital tooth guide production method and use method described above.

[0111] Figure 8 is a structure diagram of the personalized precise tooth guide production system provided by the embodiment of the application, as shown in Figure 8 , comprising: an acquisition module 81, a processing module 82, a fitting module 83 and an output module 84, wherein:

[0112] The acquisition module 81 is used to acquire the digital impression or model of the initial state dentition; the processing module 82 is used to process the digital impression or model of the initial state dentition by using a three-dimensional design software to obtain a digital diagnostic wax pattern; the fitting module 83 is used to compare and fit the digital impression or model of the initial state dentition with the digital diagnostic wax pattern to design a personalized precise tooth guide shape model; and the output module 84 is used to output the data of the personalized precise tooth guide digital model to obtain the personalized tooth guide by 3D printing.

[0113] Figure 9 is a structure diagram of the personalized precise tooth guide use system provided by the embodiment of the application, as shown in Figure 9 , comprising: a placement module 91, a marking module 92, a removal module 93 and an optimization module 94, wherein:

[0114] The placing module 91 is configured to confirm a tooth to be repaired in an oral cavity of a patient to be treated, place a personalized precise tooth-removing guide plate on the tooth to be repaired, and completely attach a tissue surface of the personalized precise tooth-removing guide plate to a surface of the tooth to be repaired. The marking module 92 is configured to determine a contour of tooth tissue to be removed on the surface of the tooth to be repaired by using the tooth-removing guide plate, mark the contour, and remove the tooth-removing guide plate. The removing module 93 is configured to precisely grind and remove tooth tissue to be removed outside the mark based on the mark, to obtain remaining tooth tissue. The optimizing module 94 is configured to perform fine polishing on a surface of the remaining tooth tissue, and to make a diagnostic veneer on the remaining tooth tissue.

[0115] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0116] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and necessary universal hardware platforms, and of course, can not be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of software products, which can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and include a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0117] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for manufacturing a personalized precision dental guide plate, characterized in that, include: Obtain a digital impression or model of the initial state of the dental arch; The digital impression or model of the initial state of the dentition is processed using 3D design software to obtain a digital diagnostic wax pattern; By comparing and fitting the digital impression or model of the initial state of the dentition with the digital diagnostic wax pattern, a personalized and precise digital model of the tooth removal guide is designed. The data of the digital model of the personalized precision tooth removal guide plate is output, and the personalized precision tooth removal guide plate is output by 3D printing. The process of using 3D design software to process the digital impression or model of the initial state of the dentition to obtain a digital diagnostic wax pattern includes: The digital impression or model of the initial state dentition is imported into the three-dimensional design software. Based on the preset oral aesthetic standards and related parameters, the digital impression or model of the initial state dentition is subjected to personalized oral aesthetic analysis and design to obtain a virtual restoration model and a digital diagnostic wax model that characterizes the expected restoration effect. The step of comparing and fitting the digital impression or model of the initial state dentition with the digital diagnostic wax-up to design a personalized and precise digital model for tooth removal includes: The digital impression or model of the initial state dentition is fitted and registered with the digital diagnostic wax pattern. After registration, the outline model of the tooth tissue to be removed is obtained. Based on the outline model of the tooth tissue to be removed, a digital model of the personalized precision tooth removal guide is designed, including: Based on the outline model of the tooth tissue to be removed, the outermost edge of the tooth tissue to be removed is continuously marked in the digital virtual software, and the inner boundary of the tooth removal guide plate body is determined based on the outermost edge of the tooth tissue to be removed. Based on the inner boundary of the tooth removal guide plate body, the outer boundary of the tooth removal guide plate body is determined at a preset distance away from the tooth removal area; The tissue surface of the dedentation guide plate is defined between the inner boundary and the outer boundary of the dedentation guide plate body, and in the tooth surface area that is in close contact with the initial digital model of the dentition. A preset thickness is determined in a direction away from the tissue surface of the de-dentition guide, and a preset smooth shape is used to determine the non-tissue surface of the de-dentition guide; A pre-defined smooth-shaped handle is added to the non-tissue surface of the de-tooth guide plate near the incisal edge of the tooth. The undercut portion is eliminated, and the model data excluding the tooth removal guide plate body and the tooth removal guide plate handle is removed to obtain the shape model of the tooth removal guide plate.

2. The method for manufacturing a personalized precision dental guide plate according to claim 1, characterized in that, The process of obtaining a digital impression or model of the initial state of the dentition includes: The dental arch of the target patient to be repaired is scanned using a digital oral scanner, or a digital model of the dental arch of the target patient to be repaired is scanned using a digital model, to obtain a digital impression or model of the initial state of the dental arch with teeth, gums and occlusal relationship of the upper and lower jaws.

3. The method for manufacturing a personalized precision dental guide plate according to claim 1, characterized in that, The data of the digital model of the personalized precision tooth removal guide is output, and the personalized precision tooth removal guide is output by 3D printing, including: The shape model of the tooth removal guide plate is transmitted or imported into a 3D printer to produce the personalized precision tooth removal guide plate.

4. A system for fabricating a personalized precision dental resection guide plate, based on the method for fabricating a personalized precision dental resection guide plate according to any one of claims 1 to 3, characterized in that, include: The acquisition module is used to acquire digital impressions or models of the initial state of the dental arch; The processing module is used to process the digital impression or model of the initial state dentition using three-dimensional design software to obtain a digital diagnostic wax pattern. The fitting module compares and fits the digital impression or model of the initial state dentition with the digital diagnostic wax pattern to design a personalized and precise digital model of the tooth removal guide. The output module is used to output the data of the digital model of the personalized precision tooth removal guide plate, and the personalized precision tooth removal guide plate is output by 3D printing.

Images