A diagnostic veneer for posterior teeth in occlusal reconstruction and a digital preparation method thereof

Abstract

The present invention provides a diagnostic veneer for posterior teeth in occlusal reconstruction and a digital preparation method thereof, the method comprising: obtaining full dentition scan data; designing a posterior tooth wax model based on the occlusal height after wearing a caltrop pad to obtain posterior tooth occlusal surface data OCCLU1; discontinuously segmenting the posterior tooth occlusal surface data OCCLU1, discontinuously deleting part of the posterior tooth occlusal data, and obtaining posterior tooth occlusal data OCCLU2; performing 3D printing based on a full tooth wax model and a discontinuous tooth wax model respectively; making a forming negative mold INDEX1 and a forming negative mold INDEX2 based on the 3D printed model; performing injection molding on part of the posterior teeth to be repaired using the forming negative mold INDEX2; and performing injection molding on the remaining posterior teeth to be repaired using the forming negative mold INDEX1. This scheme realizes the rapid and high-precision molding of the diagnostic veneer for posterior teeth, and the manufactured diagnostic veneer has good stability and durability.

Description

Technical Field

[0001] The present invention relates to the field of oral medical auxiliary equipment and tooth restoration veneer manufacturing, and in particular to a posterior tooth diagnostic veneer in occlusal reconstruction combining digital technology and injection molding and a digital preparation method thereof. Background Art

[0002] Tooth wear, also known as tooth abrasion, is a common oral problem. Severe dentition wear often requires full dentition fixed restoration and occlusal reconstruction to restore the patient's oral beauty and function. The treatment process often involves multiple disciplines such as restoration, periodontics, and orthodontics. It also requires the comprehensive application of theories such as dental dentition and aesthetics and complex restoration techniques. It is one of the biggest challenges in oral restoration treatment. In the treatment of severe dentition wear, diagnostic temporary restoration is a key link that determines the success of subsequent treatment. Temporary tooth restoration involves dentures, diagnostic veneers, and temporary crowns. Among them, diagnostic veneers can verify and determine the aesthetics and occlusal relationship of the reconstruction before tooth preparation. Therefore, diagnostic veneers should present the tooth morphology, jaw position, and vertical distance of occlusion as accurately as possible, and should not affect periodontal health.

[0003] At present, the commonly used method for making diagnostic veneers is the direct method: that is, after making a tooth wax model, use addition-type silicone rubber to make a female mold, and then place it in the mouth for molding, and use temporary resin materials to complete the production of diagnostic veneers. The advantage of this method of directly making diagnostic veneers is that it can be completed at chairside, the operation is relatively simple, and it can roughly replicate the designed tooth wax model. However, this method has some problems: for example, there is a lack of clear stop points when the silicone rubber molded female mold is in place in the mouth, resulting in poor occlusal accuracy of the prepared diagnostic veneer. Especially for most cases that require occlusal reconstruction, the accurate restoration of the vertical distance of the occlusion is often very important. When the female mold lacks a placement point in the mouth, it is very likely that the preset vertical distance cannot be achieved. On the other hand, when this method is used to make diagnostic veneers, the material easily enters the abduction gap, which is not conducive to periodontal maintenance.

[0004] In addition, some scholars use the indirect method to make diagnostic veneers. The general method is: design a digital wax-up of the affected tooth on the computer, and use computer-aided processing CAM equipment to directly cut or 3D print the designed diagnostic veneer, which can be directly bonded in the mouth. Digital means have greatly facilitated the production of diagnostic veneers, but in some cases where there is no need to significantly increase the vertical distance of the occlusion, the diagnostic veneer required in some positions is thinner, which often brings difficulties in processing. In addition, the production cost and time required for this solution are both high.

[0005] Some scholars have applied injection molding technology to the aesthetic restoration of direct filling of anterior teeth. However, for the occlusal surface of posterior teeth in occlusal reconstruction, it often involves the simultaneous molding of multiple teeth, making it difficult to control the material residue between teeth and to grasp the positional relationship of adjacent teeth. Therefore, injection molding technology has not yet been applied to the production of diagnostic veneers for posterior teeth.

[0006] In summary, it is necessary to find a solution for producing diagnostic veneers for posterior teeth with precise molding and simple process. Summary of the invention

[0007] In view of this, an embodiment of the present invention provides a diagnostic veneer for posterior teeth in occlusal reconstruction and a digital preparation method thereof. Specifically, the present invention discloses the following technical solutions:

[0008] In one aspect, the present invention provides a method for digitally preparing diagnostic veneers of posterior teeth in occlusal reconstruction, the method comprising:

[0009] S1. Obtain the full dentition scan data, segment and mark the teeth for which the posterior teeth digital diagnostic wax-up model needs to be designed, and adjust the edge lines of each tooth position;

[0010] S2. Based on the occlusal height after wearing the occlusal pad, design the wax-up of the posterior teeth to be restored and obtain the occlusal surface data OCCLU1 of the posterior teeth;

[0011] S3, discontinuously segmenting the posterior teeth occlusal surface data OCCLU1, discontinuously deleting part of the posterior teeth occlusal data, and obtaining the posterior teeth occlusal data OCCLU2; the posterior teeth positions retained after the discontinuous deletion are non-adjacent teeth positions; forming a full tooth position wax-up model based on the posterior teeth occlusal surface data OCCLU1, and forming a discontinuous tooth position wax-up model based on the posterior teeth occlusal data OCCLU2;

[0012] S4, 3D printing based on the full tooth wax-up model and the interrupted tooth wax-up model;

[0013] S5, based on the 3D printing model obtained in S4, manufacturing a molding negative mold INDEX1 and a molding negative mold INDEX2; wherein, the posterior teeth occlusal surface data OCCLU1 corresponds to manufacturing a molding negative mold INDEX1, and the posterior teeth occlusal surface data OCCLU2 corresponds to manufacturing a molding negative mold INDEX2;

[0014] S6, using the negative molding die INDEX2 to perform injection molding on a portion of the posterior teeth to be repaired;

[0015] S7. Use the molding negative mold INDEX1 to perform injection molding on the remaining posterior teeth to be repaired.

[0016] Preferably, the specific process of injection molding in S6 and S7 is:

[0017] First, use raw tape to isolate the posterior teeth that do not need to be injection molded this time;

[0018] Secondly, place the forming female mold;

[0019] Again, the molding material is injected into the position of the posterior teeth to be repaired in the molding female mold to complete the injection molding.

[0020] Preferably, the molding material in the injection molding is a flowing resin.

[0021] Preferably, in said S2, the process of acquiring the occlusal surface data OCCLU1 of the posterior teeth further includes: naming each posterior tooth to be repaired, and designing the occlusal surface morphology of each posterior tooth to be repaired according to the occlusal height relationship after adaptation with the occlusal pad, and at the same time designing the proximal contact morphology of each posterior tooth to be repaired and the adjacent teeth, so as to obtain the wax type morphology of each posterior tooth to be repaired.

[0022] Preferably, in S3, the process of intermittent deletion is:

[0023] S31, select all teeth in the occlusal surface data OCCLU1 of the posterior teeth, merge them with the model, and form a wax-up model of all teeth;

[0024] S32, selecting the teeth of the full tooth wax-up model, and selecting the teeth to be deleted;

[0025] S33, for the tooth position to be deleted, deleting the wax-up form of the posterior teeth at the corresponding position;

[0026] S34, select all teeth again and merge them with the model to form a wax-up model of discontinuous teeth.

[0027] Preferably, in said S33, after deleting the wax-up form of the posterior teeth at the corresponding position, the posterior teeth occlusal data OCCLU2 is obtained.

[0028] Preferably, the female molding mold is made of a transparent material.

[0029] Preferably, S2 further comprises: after the wax-up pattern is designed, adjusting the shape and smoothness of the interproximal spaces and contact areas of the posterior teeth to be restored.

[0030] Preferably, the transparent material is transparent silicone rubber.

[0031] On the other hand, the present invention further provides a diagnostic veneer for posterior teeth in occlusal reconstruction, wherein the diagnostic veneer for posterior teeth is prepared by the digital preparation method for the diagnostic veneer for posterior teeth in occlusal reconstruction as described above.

[0032] The traditional direct method of making diagnostic veneers for posterior teeth has major problems, including inaccurate positioning, easy entry of materials into the gap between adjacent teeth, which makes oral cleaning difficult and further causes periodontal inflammation. Compared with the traditional method, this solution has at least the following advantages:

[0033] Efficiency: This solution achieves a fast and high-precision molding process by precisely controlling the negative mold and injection material, and can quickly produce diagnostic veneers in a short period of time.

[0034] Precision: This solution utilizes precise mold design to produce diagnostic finishes that closely match the design.

[0035] Stability: This solution can be applied to wear-resistant and corrosion-resistant materials, so that the diagnostic veneers produced have good stability and durability, ensuring the long-term performance of the diagnostic veneers in the oral environment.

[0036] Digital technology integration: This solution combines digital technology with injection molding technology to achieve more accurate oral scanning, design and production processes to produce diagnostic veneers that better meet the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of digitally producing dentition data according to an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of occlusal data after wearing the occlusal pad according to an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of posterior teeth occlusal surface data OCCLU1 designed according to the position transfer of the occlusal pad according to an embodiment of the present invention;

[0041] Figure 4 A schematic diagram of segmenting and marking the tooth positions of a digital wax-up model of posterior teeth to be designed according to an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of segmenting dentition data and retaining occlusal data OCCLU2 of interrupted tooth positions according to an embodiment of the present invention;

[0043] Figure 6This is a schematic diagram of a female mold for manufacturing a molding according to an embodiment of the present invention, wherein the left side is INDEX1 and the right side is INDEX2;

[0044] Figure 7 This is a schematic diagram of a diagnostic veneer for a first premolar and a first molar made by injection molding using INDEX2 according to an embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of a diagnostic veneer for a second premolar and a second molar made by injection molding using INDEX1 according to an embodiment of the present invention;

[0046] Fig. 9 The figure is a flow chart of a method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Those skilled in the art should know that the following specific embodiments or specific implementations are a series of optimized settings listed by the present invention to further explain the specific content of the invention, and these settings can be combined or used in association with each other, unless the present invention clearly states that some or a specific embodiment or implementation cannot be associated or used together with other embodiments or implementations. At the same time, the following specific embodiments or implementations are only used as the most optimized settings, and are not to be understood as limiting the scope of protection of the present invention.

[0049] The technical problem to be solved by this scheme is to provide a solution for manufacturing diagnostic veneers for full-mouth reconstruction of posterior teeth. Based on the intermittent injection and digital methods, it can effectively solve the current problems of material residue and adjacent relationship control during multi-tooth injection molding.

[0050] In this embodiment, combined with Fig. 9 As shown, the preparation process of the diagnostic veneer is as follows:

[0051] S1. Perform intraoral scanning on patients who need full dentition occlusal reconstruction and digitize the dentition data. The digitized effect is as follows: Figure 1 shown.

[0052] First, a digital model of the prepared anterior dentition is obtained through an intraoral scanner, and the digital model data is imported into a model tool for processing. The model tool may be, for example, a 3shape dental system, and the format of the digitized data may be set to, for example, an STL format.

[0053] Then, use the segmentation tool in the model tool to segment and mark the tooth positions of the proposed digital diagnostic wax-up of posterior teeth, and adjust the edge lines of each tooth position to facilitate subsequent Boolean operations.

[0054] S2. Raise the occlusal surface according to aesthetic and functional requirements, or design the new occlusal surface data of the posterior teeth according to the occlusal height after the patient adapts to the occlusal height after wearing the occlusal pad, such as OCCLU1. Figure 2 , 3 As shown, Figure 2 The occlusal data after wearing the occlusal pad is Figure 2 The occlusal data is used to adjust the jaw position and occlusal height to obtain Figure 3 data.

[0055] In this step, based on the segmentation and annotation of S1, the digital diagnostic wax-up of the posterior teeth is designed in sequence. Taking the design of "17 teeth position" as an example, first, in the anatomical morphology design function of the model tool, the Smile database is used to perform Boolean operations using the existing preferred tooth morphology in the database to design and generate the initial shape. Then, the carving function of the model tool is used to further position the initial shape, adjust the wax-up shape, edge line and interproximal contact shape to ensure that the occlusal surface data OCCLU1 of the posterior teeth is suitable for the jaw position relationship and occlusal height of the patient wearing the occlusal pad, such as Figure 3 After designing the wax-up of all the posterior teeth to be restored, the shape and smoothness of the interproximal spaces and contact areas of each tooth position are adjusted. The adjustment further improves the accuracy of subsequent injection molding and avoids the problem of injection material entering the outer space of adjacent teeth.

[0056] After completing the above processing, the posterior teeth occlusal surface data OCCLU1 is obtained.

[0057] In a more specific embodiment, the bite height is digitally transferred through the bite height and jaw position adapted by the patient wearing the jaw pad, and the 3shape dental system is used to optimize the tooth data at this bite height and jaw position to design the digital diagnostic wax-up. The height of the elevation is determined by the height after the jaw pad is adapted. After the bite is elevated, the design is performed using the optimized tooth occlusal morphology data in the 3shape dental system model tool.

[0058] S3, discontinuously segment the occlusal surface data of the posterior teeth, retain the occlusal data of the first premolar and the first molar, delete the occlusal data of the second premolar and the second molar, and obtain new occlusal data of the posterior teeth OCCLU2, such as Figure 5 That is, the posterior teeth retained after the intermittent deletion are non-adjacent teeth. It can be understood that in most cases, the deleted teeth are also non-adjacent teeth.

[0059] In a more detailed embodiment, the model tool is used to merge the current wax-up data (i.e., the occlusal surface data of the posterior teeth OCCLU1) with the model, and the tooth positions are selected in the model tool, and all the tooth positions are selected, for example Figure 4 Then merge all the designs with the model. And export the stl file of the model, that is, the wax-up model of all teeth, for 3D printing, and make the subsequent negative mold INDEX1.

[0060] Then, select the teeth in the merged model, delete the wax-up morphology of the interrupted teeth, and continue Figure 4 For example, the wax-up forms of 15, 17, 25, and 27 were deleted, and the wax-up forms of 14, 16, 24, and 26 were retained. Figure 5 All designs were then merged with the model again.

[0061] After this merger, it can be seen that the wax-up data of the interrupted teeth are integrated into the new model to become a whole. In this merged model, teeth 14, 16, 24, and 26 have wax-up data, and teeth 15, 17, 25, and 27 are the original shapes before the wax-up is designed.

[0062] Then export the stl file of the model, i.e. the interrupted tooth wax-up model, for use in 3D printing, and make the subsequent negative mold INDEX2.

[0063] It is further explained that the method of retaining and deleting the tooth data in this step is as follows: in the step of designing the occlusal surface data of the posterior teeth (i.e., step S2), first name each posterior tooth to be repaired, and design the occlusal surface morphology of each tooth according to the transferred jaw position relationship (i.e., the morphology of each tooth in the occlusal surface data OCCLU1), and at the same time design the proximal contact morphology with the adjacent teeth. After the design is completed, in step S3, it is only necessary to remove the morphology of the interrupted tooth position, that is, select the tooth position to be removed, and restore it to its original morphology before designing OCCLU1 (i.e., the original tooth morphology). The occlusal surface morphology and proximal contact morphology of the remaining tooth positions are not changed, and the designed tooth wax model morphology is still maintained. Because the diagnostic veneer to be produced in the first step is the tooth position with the currently retained morphology, there is no data change in these tooth positions, and there is no inaccuracy or other deviations. At the same time, the tooth position with the morphology removed (i.e. the tooth position with the original tooth morphology) can be used as the stop point for the positioning of the molding negative mold when making the diagnostic veneer in the first step, so as to make the positioning of the negative mold more accurate and ensure that the tooth position obtained by injection molding completely replicates the designed morphology.

[0064] It is further explained that in this step, the occlusal data of the first premolar and the first molar are retained, and the occlusal data of the second premolar and the second molar are deleted. This step mainly realizes the screening and retention of the interrupted tooth position. We can also retain the occlusal data of the second premolar and the second molar, and delete the occlusal data of the first premolar and the first molar to make a new occlusal model OCCLU2, that is, to realize another way of selecting the interrupted tooth position. The screening of the interrupted tooth position can further ensure the accurate positioning of the posterior teeth in the injection molding, and at the same time avoid the problem of the material easily entering the extension gap of the adjacent teeth.

[0065] S4, 3D printing the models designed in the above steps, that is, printing the full tooth wax model and the interrupted tooth wax model respectively, so as to make the subsequent negative molds respectively. In the tooth negative mold making, transparent silicone rubber is used to make negative molds INDEX1 and INDEX2.

[0066] S5. Use transparent silicone rubber to make negative molds INDEX1 and INDEX2 for the posterior teeth of the 3D printed model. The negative molds are as follows: Figure 6 At this point, the digital design and preparation of the injection-molded posterior diagnostic veneer is completed.

[0067] S6. Perform injection molding using the negative mold. In this embodiment, for example, first use the negative mold INDEX2 for injection molding, use raw tape to isolate the second premolar and second molar of the patient, place the negative mold INDEX2, and use flowing resin to mold the diagnostic veneer of the first premolar and first molar. The injection molding process is as follows: Figure 7 As shown in a, b, and c, Figure 7 In the figure, a is a schematic diagram of raw tape isolation, b is a schematic diagram of the negative mold injection molding process, and c is a schematic diagram of the effect after molding.

[0068] In this step, the negative mold INDEX2 is made based on the 3D printed model after the posterior teeth are screened and deleted. Therefore, during the injection molding process, the positions of the second premolars and second molars retain the original tooth morphology, which can well ensure the accurate positioning of the negative mold and prevent the molding material from entering the flank space of the adjacent teeth.

[0069] S7, then, use INDEX1 to form a negative mold for injection. Similar to the steps in S6, use raw tape to isolate the patient's first premolar and first molar, place the negative mold INDEX1, and use flowing resin to form the diagnostic veneer of the second premolar and second molar. The injection production process is as follows Figure 8 As shown in a, b, and c, Figure 8 In the figure, a is a schematic diagram of raw tape isolation, b is a schematic diagram of the negative mold injection molding process, and c is a schematic diagram of the effect after molding.

[0070] In this step, the negative mold INDEX1 is made based on the 3D printed model of the full-position wax model of the posterior teeth. After the diagnostic veneers of the first premolar and the first molar are injection molded in S6, the molded tooth morphology is matched with the tooth negative mold at the corresponding position in INDEX1, and then the diagnostic veneers of the remaining teeth to be molded are injection molded, thereby also achieving the function of ensuring the accurate positioning of the negative mold and preventing the molding material from entering the flank space of the adjacent teeth.

[0071] At this point, the injection molding of the patient's posterior teeth is completed.

[0072] Furthermore, for the materials used in injection molding, the material used in the current traditional method for making diagnostic veneers is methyl methacrylate, which is self-curing, characterized by large polymerization shrinkage and average dimensional stability. In this solution, the injection material uses a flowing resin, which has good dimensional stability, wear resistance, and small polymerization shrinkage. At the same time, in this solution, the molding female mold uses transparent silicone rubber, which ensures the convenience of female mold production while ensuring the light transmittance of the female mold itself, thereby cooperating with the molding of the flowing resin to more effectively realize the production of the posterior tooth diagnostic veneer of this solution.

[0073] In this embodiment, a flow resin molding method is used for the diagnostic surface of the posterior teeth. There are some problems with the diagnostic veneer manufacturing method commonly used in the prior art: for example, the silicone rubber molding female mold lacks a clear stop point when it is placed in the mouth, resulting in poor occlusal accuracy of the diagnostic veneer, which is very dependent on the physician's experience. Especially for most patients who need occlusal reconstruction, the accurate restoration of the vertical distance of the occlusion is often very important. When the female mold lacks a placement point in the mouth, it is very likely that the preset vertical distance cannot be achieved; and when the diagnostic veneer is made by the prior art, the material easily enters the abduction gap, which is not conducive to periodontal maintenance.

[0074] The present invention adopts digital production of discontinuous teeth and flow resin injection molding. The most important advantage is that it can avoid the inaccuracy problem in the existing method. Secondly, the diagnostic veneer produced by this scheme can form interproximal contact between two adjacent teeth. On the one hand, there is no overflow of excess material, and on the other hand, it is convenient for patients to clean and facilitate periodontal maintenance.

[0075] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for digital preparation of diagnostic veneers for posterior teeth in occlusal reconstruction, characterized in that: The method comprises: S1. Obtain the full dentition scan data, segment and mark the teeth for which the posterior teeth digital diagnostic wax-up model needs to be designed, and adjust the edge lines of each tooth position; S2. Based on the occlusal height after wearing the occlusal pad, design the wax-up of the posterior teeth to be restored and obtain the occlusal surface data OCCLU1 of the posterior teeth; S3, discontinuously segmenting the posterior teeth occlusal surface data OCCLU1, discontinuously deleting part of the posterior teeth occlusal data, and obtaining the posterior teeth occlusal data OCCLU2; the posterior teeth positions retained after the discontinuous deletion are non-adjacent teeth positions; forming a full tooth position wax-up model based on the posterior teeth occlusal surface data OCCLU1, and forming a discontinuous tooth position wax-up model based on the posterior teeth occlusal data OCCLU2; S4, 3D printing based on the full tooth wax-up model and the interrupted tooth wax-up model; S5, based on the 3D printing model obtained in S4, manufacturing a molding negative mold INDEX1 and a molding negative mold INDEX2; wherein, the posterior teeth occlusal surface data OCCLU1 corresponds to manufacturing a molding negative mold INDEX1, and the posterior teeth occlusal surface data OCCLU2 corresponds to manufacturing a molding negative mold INDEX2; S6, using the negative molding die INDEX2 to perform injection molding on a portion of the posterior teeth to be repaired; S7, using the female mold INDEX1 to perform injection molding on the remaining posterior teeth to be repaired; The specific process of injection molding in S6 and S7 is as follows: First, use raw tape to isolate the posterior teeth that do not need to be injection molded this time; Secondly, place the forming female mold; Next, the flowing resin is injected into the position of the posterior teeth to be repaired in the female mold to complete the injection molding.

2. The method according to claim 1, characterized in that In said S2, the process of acquiring the occlusal surface data OCCLU1 of the posterior teeth further includes: naming each posterior tooth to be repaired, and designing the occlusal surface shape for each posterior tooth to be repaired according to the occlusal height relationship after adaptation with the occlusal pad, and at the same time designing the proximal contact shape between each posterior tooth to be repaired and the adjacent teeth, so as to obtain the wax type shape of each posterior tooth to be repaired.

3. The method according to claim 1, characterized in that In S3, the process of intermittent deletion is as follows: S31, select all teeth in the occlusal surface data OCCLU1 of the posterior teeth, merge them with the model, and form a wax-up model of all teeth; S32, selecting the teeth of the full tooth wax-up model, and selecting the teeth to be deleted; S33, for the tooth position to be deleted, deleting the wax-up form of the posterior teeth at the corresponding position; S34, select all teeth again and merge them with the model to form a wax-up model of discontinuous teeth.

4. The method according to claim 3, characterized in that In the above S33, after deleting the wax-up form of the posterior teeth at the corresponding position, the posterior teeth occlusal data OCCLU2 is obtained.

5. The method according to claim 1, characterized in that The female mold is made of transparent material.

6. The method according to claim 2, characterized in that The S2 further includes: after the wax-up model is designed, adjusting the shape and smoothness of the interproximal spaces and contact areas of the posterior teeth to be restored.

7. The method according to claim 5, characterized in that The transparent material is transparent silicone rubber.

8. A diagnostic veneer for posterior teeth in occlusal reconstruction, characterized in that: The posterior teeth diagnostic veneer is prepared and formed by the digital preparation method of posterior teeth diagnostic veneer in occlusal reconstruction described in any one of claims 1-7.

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