Three-dimensional bite raising model generation device and method, and computer storage medium

Abstract

The present application provides a device for generating a three-dimensional bite pad model, a method for generating a three-dimensional bite pad and a computer storage medium. The three-dimensional bite pad model comprises a base model and a platform model. The device determines a target tooth which is the first tooth of the first jaw to contact the second jaw according to a center relationship, determines a pre-planned bite depth position according to the incisal edge of the target tooth and a pre-planned bite depth value, determines a pre-planned bite plane according to the pre-planned bite depth position and a functional lingual cusp position, and determines a bite contact point on the pre-planned bite plane according to the center relationship. The generated base model has a lingual side which is adjacent to a plurality of teeth arranged in series and including the target tooth. The generated platform model protrudes from the base model towards the lingual side at a position corresponding to the target tooth, has a bite surface on the pre-planned bite plane, and covers the bite contact point.

Description

Technical Field

[0001] This invention relates to an apparatus for generating a three-dimensional occlusal elevation model, a method for generating a three-dimensional occlusal elevation object, and a computer storage medium thereof. Specifically, this invention relates to an apparatus for generating a three-dimensional occlusal elevation model, a method for generating a three-dimensional occlusal elevation object, and a computer storage medium thereof, involving three-dimensional scanning, three-dimensional modeling, and three-dimensional printing technologies. Background Technology

[0002] Whether due to congenital genetics or acquired wear and tear, the primary key to improving malocclusion and full mouth reconstruction lies in addressing the insufficient vertical space of the bite. Clinically, occlusal elevation techniques are mainly used to address this issue, and these techniques are divided into two main categories: single-tooth fixed occlusal elevation techniques and movable occlusal elevation techniques.

[0003] Single-tooth fixed occlusal augmentation involves directly bonding a single occlusal augmentation piece to the patient's tooth crown surface. Existing single-tooth occlusal augmentations are made of alloys or light-cured composite resin. However, regardless of the material, single-tooth fixed occlusal augmentation has several drawbacks. First, the single-tooth occlusal augmentation relies on a chemical bond between the adhesive and the enamel. Given that it is only attached to a single cross-section and the adhesive strength is limited to the enamel, if the anterior teeth are zirconia crowns, metal crowns, porcelain crowns, self-polymerized polymethyl methacrylate temporary crowns, or even if there is edentulism, the adhesive cannot form an effective bond with the single-tooth occlusal augmentation. Second, the single-tooth occlusal augmentation is subjected to force solely by the root of a single tooth. Third, single-tooth occlusal augmentations are only suitable for fixed orthodontic appliances and not for removable clear aligners. Fourth, when a single occlusal bolster is adhered to the palatal or lingual side, the adhesion position is prone to shifting, and the adhesive is prone to overflowing into the gingival sulcus, causing periodontal disease.

[0004] Furthermore, if the material of a single occlusal cusp is an alloy, it also has disadvantages such as being prone to iatrogenic wear on the opposing teeth (due to the significant difference between the elastic modulus of the alloy and the tooth structure) and being available in only one size, making customization impossible. If the material of a single occlusal cusp is a photopolymer composite resin, it also has disadvantages such as being easily brittle or falling off due to its weak ability to withstand vertical and lateral occlusal forces, requiring tedious testing and adjustment after being bonded to the crown, and the potential for soft tissue ulceration in patients if the addition or reshaping of a single occlusal cusp is not properly polished.

[0005] Removable bite ramps involve creating protrusions (e.g., bite ramps) on the clear aligners, which the patient then wears. However, this method also has several drawbacks. First, due to the material properties of the flexible aligners, they are prone to deformation during occlusal contact, causing the protrusions to sink or the aligners to deform and dislocate. Second, due to limitations in the software design of the clear aligner manufacturers, when the overbite and overjet measurements exceed 3 mm, the protrusions cannot effectively extend. Third, when the patient wears the clear aligners, the protrusions can form bulges, resulting in weak bite resistance. Furthermore, because the flexible aligner material has a large stress deformation, it is difficult to ensure that vertical forces pass through the root resistance center. Fourth, due to limitations in the software design of the clear aligner manufacturers, if the patient's overbite and overjet measurements differ from the software estimates during treatment, the entire set of aligners must be discarded and remade. Fifth, due to limitations in the software design of companies that produce invisible braces, if the patient does not wear them for the required amount of time each day and if the patient does not cooperate adequately during the treatment, the protrusion will not be able to achieve the desired outcome of reconstructing occlusal height.

[0006] In view of this, there is an urgent need in the field for a novel occlusal bolstering technology that can customize occlusal bolsters according to the patient's dentition and crown shape, and the resulting occlusal bolsters can withstand higher biting forces without the various drawbacks caused by the adhesion process. Summary of the Invention

[0007] One object of the present invention is to provide an apparatus for generating a three-dimensional occlusal elevation model, comprising a storage device, an input interface, and a processor electrically connected to the storage device and the input interface. The storage device stores an intraoral three-dimensional scan file, which records dental information of a first jaw and a central relationship between the first and second jaws. The input interface receives a pre-defined occlusal depth value. The processor performs the following operations: (a) based on the central relationship, confirming at least one target tooth in the dental information as the earliest contacting tooth in the first jaw with the second jaw; (b) based on the apex of the at least one target tooth and the pre-defined occlusal depth value, determining a pre-defined occlusal depth position; (c) based on the pre-defined occlusal depth position and the lingual functional bite positions of the two first molars in the dental information, determining a pre-defined occlusal plane; (d) based on the central relationship, determining an occlusal contact point on the pre-defined occlusal plane; and (e) generating the three-dimensional occlusal elevation model based on the dental information. A base model in the occlusal elevation model, wherein an adjacent surface of the base model is able to abut against several consecutively arranged teeth in the dental information on the palatolingual side, and these consecutively arranged teeth include at least one target tooth in the dental information, and (f) generating a platform model in the three-dimensional occlusal elevation model according to the pre-defined occlusal plane and the dental information, wherein the platform model protrudes towards the palatolingual side from the base model corresponding to the at least one target tooth, an occlusal surface of the platform model falls on the pre-defined occlusal plane, and the occlusal surface covers the occlusal contact point.

[0008] In some implementations, the at least one target tooth is at least one of the two central incisors and the two lateral incisors in the dental information.

[0009] In some implementations, the consecutively arranged teeth that the base model can connect to include two central incisors, two lateral incisors, and two canines from the dental information.

[0010] In some embodiments, the two canines include a first canine and a second canine, and the base model extends laterally from a first palatolingual distal margin ridge of the first canine to a second palatolingual distal margin ridge of the second canine.

[0011] In some implementations, each of the two canines has a tangential end, and a region is defined from each tangential end toward the root, and the base model is not adjacent to these regions.

[0012] In some implementations, the pre-cut depth location is where the incisal edge of the at least one target tooth extends apically towards the root from the pre-cut depth value.

[0013] In some implementations, the input interface further receives an extension length value, and the extension length value is a distance from the occlusal contact point to an edge of the occlusal surface.

[0014] Another object of the present invention is to provide a method for generating a three-dimensional occlusal bolster, the method being performed by an electronic computing device. The electronic computing device stores an intraoral three-dimensional scan file and a pre-defined occlusal depth value. The intraoral three-dimensional scan file records dental information of a first jaw and a central relationship between the first jaw and a second jaw. The method includes the following steps: (a) identifying at least one target tooth in the dental information as the earliest contacting tooth in the first jaw with the second jaw, based on the central relationship; (b) determining a pre-defined occlusal depth position based on the apex of the at least one target tooth and the pre-defined occlusal depth value; (c) determining a pre-defined occlusal plane based on the pre-defined occlusal depth position and the palatolingual functional bite head positions of the two first molars in the dental information; (d) determining an occlusal contact point on the pre-defined occlusal plane based on the central relationship; and (e) generating a base model in a three-dimensional occlusal bolster model based on the dental information, wherein an adjacent surface of the base model... (f) A platform model in the three-dimensional occlusal pad model is generated based on the pre-defined occlusal plane and the occlusal information, wherein the platform model protrudes from the base model to the at least one target tooth toward the palatal side, an occlusal surface of the platform model falls on the pre-defined occlusal plane, and the occlusal surface covers the occlusal contact point; and (g) The three-dimensional occlusal pad model is transferred to a three-dimensional printer, so that the three-dimensional printer prints the three-dimensional occlusal pad based on the three-dimensional occlusal pad model.

[0015] In some implementations, the at least one target tooth is at least one of the two central incisors and the two lateral incisors in the dental information.

[0016] In some implementations, the consecutively arranged teeth that the base model can connect to include two central incisors, two lateral incisors, and two canines from the dental information.

[0017] In some embodiments, the two canines include a first canine and a second canine, and the base model extends laterally from a first palatolingual distal margin ridge of the first canine to a second palatolingual distal margin ridge of the second canine.

[0018] In some implementations, each of the two canines has a cutting end, and a region is defined from the cutting end of each canine towards the root, and the base model is not adjacent to these regions.

[0019] In some implementations, the pre-cut depth location is where the incisal edge of the at least one target tooth extends apically towards the root from the pre-cut depth value.

[0020] In some embodiments, the method further includes the step of receiving an extension length value by the electronic computing device, wherein the extension length value is a distance from the occlusal contact point to an edge of the occlusal surface.

[0021] Another object of the present invention is to provide a computer storage medium. After an electronic computing device loads several program instructions stored in the computer storage medium, the electronic computing device executes the several program instructions to implement any of the aforementioned methods for generating a three-dimensional interlocking pad.

[0022] The apparatus for generating a three-dimensional occlusal elevation model, the method for generating a three-dimensional occlusal elevation, and several program instructions stored in the computer storage medium provided by this invention utilize information recorded from the patient's intraoral three-dimensional scan file (i.e., the dental information of the first jaw and the central relationship between the first and second jaws. It should be noted that clinically, for most patients, the "central relationship" is the "maximum intercuspal position," but for some patients, the "central relationship" and the "maximum intercuspal position" may differ by 1-2 mm) and pre-defined occlusal depth values ​​to generate a three-dimensional occlusal elevation model including a base model and a platform model. The three-dimensional occlusal elevation model can be printed out using a three-dimensional printer as the actual three-dimensional occlusal elevation to be used. Since the process of generating the three-dimensional occlusal elevation model of this invention is based on the patient's intraoral three-dimensional scan file, it can be customized according to the patient's dental information (e.g., crown morphology). Furthermore, because the base model in the three-dimensional occlusal bolster can mate with several consecutive teeth on the palatal and lingual sides, the three-dimensional occlusal bolster printed based on the three-dimensional occlusal bolster can enhance the biting force. Moreover, the dimensions of the three-dimensional occlusal bolster are calculated based on collected data, thus avoiding various discomforts experienced by users wearing three-dimensional occlusal bolsters printed based on the three-dimensional occlusal bolster. Attached Figure Description

[0023] Figure 1 A schematic diagram depicting some implementations of the model generation device 1.

[0024] Figure 2 Depicts portions of the teeth in the first jaw and portions of the teeth in the second jaw as recorded in the intraoral 3D scan file S1.

[0025] Figure 3 Depict the teeth of the first jaw J1 recorded in the intraoral 3D scan file S1.

[0026] Figure 4Describe the dental row information of the first jaw J1 and the three-dimensional occlusal pad height model.

[0027] Figure 5 A schematic diagram depicting a specific example of a three-dimensional occlusal bolster model.

[0028] Figure 6 A flowchart depicting the main process of model generation method of the present invention is provided.

[0029] Explanation of reference numerals in the attached figures 1: Model generation device 11: Storage 12: Input Interface 13: Processor 301: Palatal-lingual functional bite position 302: Pre-marked bite depth position 303: Cutting end 304: Edge 305: Occlusal contact point 307: Cut End 321: Pre-mark the occlusal plane 411: Protrusion and concave 412: Tooth position A1: Area A2: Occlusal surface J1: First jaw L1: Pre-cut bite depth value L2: Extension length value M1: Base Model M2: Platform Model OT: Target Teeth S1: Intraoral 3D scan file T21: Orthodontic incisors T12, T22: Lateral incisors T13, T23: Canines S601, S603, S605, S607, S609, S611, S613: Steps. Detailed Implementation

[0030] The following description, through embodiments, explains the apparatus for generating a three-dimensional occlusal elevation model, the method for generating a three-dimensional occlusal elevation, and the computer storage medium thereof provided by the present invention. However, these embodiments are not intended to limit the implementation of the invention to any environment, application, or manner described in these embodiments. The description of the following embodiments is for illustrative purposes only and is not intended to limit the scope of the invention. It should be understood that in the following embodiments and drawings, elements not directly related to the technical features of the present invention have been omitted and not described or / and illustrated to avoid hindering the understanding of the invention. Furthermore, the dimensions of the elements and the proportional relationships between the elements in the drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Moreover, unless otherwise stated, the terms "a," "the," and similar terms used in this specification and claims should be understood to include both singular and plural forms.

[0031] Figure 1 The diagram illustrates the architecture of some embodiments of the model generation apparatus (i.e., apparatus for generating three-dimensional bite pad models) 1 of the present invention. The model generation apparatus 1 includes a storage 11, an input interface 12, and a processor 13, with the processor 13 electrically connected to the storage 11 and the input interface 12.

[0032] Storage 11 may include one or more of the following: memory, hard disk, and any other non-transitory storage medium, circuitry, or device known to those skilled in the art capable of storing data. Input interface 12 may include one or more of the following: keyboard, mouse, touchscreen, trackball, voice converter, and other devices known to those skilled in the art to which this invention pertains that allow a user to input commands and / or data. Processor 13 may include one or more of the following: various processors, central processing units, microprocessors, digital signal processors, graphics processing units, and other electronic computing devices known to those skilled in the art.

[0033] For patients requiring malocclusion correction or / and full mouth reconstruction, model generating device 1 can generate a digital three-dimensional occlusal pad model. This three-dimensional occlusal pad model includes a base model and a platform model. This three-dimensional occlusal pad model can be printed into a three-dimensional occlusal pad using a 3D printer. The physician then adheres the three-dimensional occlusal pad to the palatal and lingual sides of the patient's teeth to improve their occlusal problems. Model generating device 1 is described in detail below.

[0034] Storage 11 stores an intraoral 3D scan file S1. The intraoral 3D scan file S1 is a file obtained by an operator (e.g., a physician, nurse, or dental practitioner) after scanning the inside of a patient's mouth using an intraoral scanner. For a given patient, the intraoral scanner performs an intraoral 3D scan to establish the patient's intraoral dentition and crown morphology, and stores it as the intraoral 3D scan file S1. Specifically, the intraoral 3D scan file S1 records the dentition information of the first jaw, the dentition information of the second jaw, and the centric relationship between the first and second jaws (i.e., the unique and stable relationship between the first and second jaws. It should be noted that clinically, for most patients, the "centric relationship" is the "maximum occlusal position," but for some patients, the "centric relationship" and the "maximum occlusal position" may differ by 1-2 millimeters). The dentition information of the first and second jaws each records relevant information for several teeth. Those skilled in the art should be familiar with the records and contents obtained after an intraoral scanner scans the inside of a patient's oral cavity, so they will not be elaborated upon here.

[0035] This invention does not limit the file format of the intraoral 3D scan image S1, but for example, the file format of the intraoral 3D scan image S1 may conform to the Standard Tessellation Language (STL) specification. Furthermore, this invention does not limit how the model generating device 1 acquires the intraoral 3D scan image S1. For example, the model generating device 1 may be electrically connected to an intraoral scanner to receive the intraoral 3D scan image S1. As another example, the model generating device 1 may be configured with a network interface and / or an input / output interface to receive the intraoral 3D scan image S1.

[0036] On the other hand, the input interface 12 receives a pre-defined occlusal depth value L1, which is the vertical overlap distance or proportion between the incisal edges of the first and second central incisors. The pre-defined occlusal depth value L1 is determined by the dentist based on the patient's occlusal function and / or aesthetic needs. Generally, the pre-defined occlusal depth value L1 can be set to approximately 1.0 mm to 2.5 mm apically from the incisal edge of the first central incisor, or set to a value that allows the upper and lower crowns to overlap by 20% to 40% of the total area.

[0037] The following details how the model generating device 1 generates a three-dimensional occlusal elevation model of the patient based on the intraoral three-dimensional scan image S1 and the pre-marked bite depth value L1. For ease of understanding, the following description uses the maxilla and mandible as examples, but it should be understood that the first and second jaws in this invention can also refer to the mandible and maxilla, respectively. Furthermore, please refer to the following description as well. Figure 2 and Figure 3 The specific example shown is as follows, in which Figure 2Depicts portions of the teeth in the first jaw and the second jaw as recorded in the intraoral 3D scan file S1, while Figure 3 Depicts the teeth of the first jaw J1 recorded in the intraoral 3D scan file S1. It should be understood that... Figure 2 and Figure 3 The specific examples shown are not intended to limit the scope of the invention.

[0038] The processor 13, based on the center relationship (not shown) recorded in the intraoral 3D scan image S1, confirms that the target tooth OT in the dental arch information of the first jaw is the tooth in the first jaw that first contacts the second jaw. It should be noted that, in some embodiments, the tooth in the first jaw that first contacts the second jaw may be at least one of the two central incisors and two lateral incisors in the dental arch information of the first jaw. Figure 2 and Figure 3 In the example shown, the target tooth OT is one of the orthodontic incisors in the dental information of the first jaw J1.

[0039] After confirming the target tooth OT, the processor 13 determines the pre-marked occlusal depth position 302 based on the pre-marked occlusal depth value L1 and the incisal edge 303 of the target tooth OT. Specifically, the pre-marked occlusal depth position 302 is located at the pre-marked occlusal depth value L1 extending apically from the incisal edge 303 of the target tooth OT. Then, the processor 13 determines an occlusal plane 321 based on the pre-marked occlusal depth position 302 and the palatolingual functional cusp positions 301 of the two first molars in the first jaw's dentition information. Figure 2 In the middle, due to the perspective, the pre-drawn occlusal plane 321 is only presented as a dashed line. Figure 3 The pre-defined occlusal plane 321, formed by the pre-defined bite depth position 302 and the palatolingual functional bite head positions 301 of the two first molars in the dental information of the first jaw, is clearly presented and is represented by dotted dashed triangles. In addition, the processor 13 determines the occlusal contact point 305 of the first jaw and the second jaw on the pre-defined occlusal plane 321 based on the center relationship recorded in the intraoral three-dimensional scan file S1.

[0040] As mentioned earlier, the three-dimensional interlocking shim model generated by model generation device 1 includes a base model and a platform model. The operation of processor 13 in generating the base model and its characteristics will be explained first. Please refer to the following descriptions. Figure 2 and Figure 4 ,in Figure 4 The specific example shown depicts the dental row information of the first jaw J1 and a three-dimensional occlusal pad model.

[0041] The processor 13 generates a base model in a three-dimensional occlusal bolster model based on the dentition information of the first jaw J1. One adjacent surface of the base model is adjacent to several consecutively arranged teeth in the dentition information of the first jaw J1 on the palatolingual side, and these consecutively arranged teeth at least include the target tooth OT in the dentition information. For example, the processor 13 can generate the base model by tracking the anatomical undulations of the palatolingual side based on the dentition information of the first jaw J1.

[0042] exist Figure 2 and Figure 4 In the specific example shown, the consecutively arranged teeth that the base model M1 can connect to include two central incisors, two lateral incisors, and two canines. It should be noted that... Figure 2 Only the left-side central incisor T21, lateral incisor T22, and canine T23 are shown. Figure 4 Due to the viewing angle, only two lateral incisors, T12 and T22, and two canines, T13 and T23, are visible. Figure 4 In the specific example shown, the base model M1 extends from the transverse direction of the palatolingual distal margin ridge of canine T23 to the palatolingual distal margin ridge of canine T13.

[0043] Furthermore, in some embodiments, if the consecutively arranged teeth that the base model M1 can adjacent to include two canines, then the incisal tip of each canine tooth defines a region radiating apically, and the base model M1 does not adjacent to these regions. It should be noted that in other embodiments, the incisal tip of each lateral incisor can also define a region radiating apically, and the base model M1 does not adjacent to these regions. For example, the height of each of these regions can be preset to 2.5 mm to 3.0 mm.

[0044] by Figure 2 Taking the specific example shown, a region A1 is defined radix 307 of the canine tooth T13. Region A1 is on the palatolingual side of the canine tooth T13, while the base model M1 is not adjacent to region A1 on the palatolingual side of the canine tooth T13. If from... Figure 4 Upon inspection, it can be clearly seen that the incisors of canines T13 and T23 have areas that are not adjacent to the base model M1 in the root direction, and the incisors of lateral incisors T12 and T22 also have areas that are not adjacent to the base model M1 in the root direction.

[0045] In some implementations, the apical margin of the bonding surface of the base model M1 (i.e., the side adjacent to the tooth) terminates at the gingival zenith level. Therefore, when the three-dimensional occlusal pad, printed based on the three-dimensional occlusal pad model, is subsequently bonded to the patient's crown surface, pressure on intraoral soft tissues or the gingival sulcus can be avoided.

[0046] Figure 5Another specific example of a base model M1 depicting a three-dimensional occlusal bolster model. In this specific example, the base model M1 includes six tooth positions 412 (corresponding to two central incisors, two lateral incisors, and two canines) and five protruding undercuts 411 on the interdental surfaces, wherein the protruding undercuts 411 can extend moderately into the interdental surfaces to increase the adhesive surface area of ​​the base model M1. It should be understood that the number and pattern of tooth positions and protruding undercuts included in the base model M1 may differ in different embodiments.

[0047] This section explains the operation and characteristics of the platform model used by processor 13 to generate the 3D bite pad model. Please also refer to the following explanation. Figure 2 and Figure 4 .

[0048] Processor 13 generates platform model M2 based on the pre-defined occlusal plane 321 and the tooth row information of the first jaw J1. Platform model M2 protrudes from the base model M1 towards the palatal and lingual side at the target tooth OT, and the occlusal surface A2 of platform model M2 falls on the pre-defined occlusal plane 321 and covers the occlusal contact point 305. Figure 2 and Figure 4 In the specific example shown, the occlusal surface A2 of the platform model M2 is pre-marked at the bite depth position 302, extending towards the palatolingual functional bite position 301 of the two first molars.

[0049] In some embodiments, the input interface 12 may receive an extension length value L2. In these embodiments, the extension length value L2 is the distance from the occlusal contact point 305 to the edge 304 of the occlusal surface A2. That is, the extent to which the platform model M2 protrudes towards the palatolingual side is limited; the extension of the occlusal surface A2 towards the palatolingual side on the pre-marked occlusal plane 321 may exceed the occlusal contact point 305, but the extent of the excess is limited to the extension length value L2. With this limitation, when the three-dimensional occlusal pad material printed based on the three-dimensional occlusal pad model is subsequently adhered to the patient's tooth crown surface, the patient will not experience discomfort due to the excessive extension length of the platform model M2.

[0050] In some implementations, the dentition information of the first jaw and / or the second jaw in the intraoral 3D scan file may show missing teeth. In these implementations, the input interface 12 can receive the required parameters, enabling the processor 13 to supplement or simulate the missing tooth position using existing techniques such as mirroring or retrieving data from a database, so that the dentition information of the first and second jaws is complete. The processor 13 then performs the aforementioned operations.

[0051] As described above, the three-dimensional occlusal pad model generated by the model generating device 1 can be printed as a three-dimensional occlusal pad by a three-dimensional printer. The physician then adheres the three-dimensional occlusal pad to the palatal and lingual sides of the patient's teeth to improve their occlusal problems. This invention does not limit how the three-dimensional printer obtains the three-dimensional occlusal pad model. For example, the model generating device 1 may be configured with a network interface and / or an input / output interface to output the three-dimensional occlusal pad model.

[0052] In some embodiments, polymethyl methacrylate (PMMA) can be selected as the 3D printing material to enable a 3D printer to print the 3D occlusal pad model into a 3D occlusal pad. Using 3D printing materials offers advantages such as high economy, high accuracy, and high safety, and complies with biocompatibility standards. In some embodiments, 3D printers implementing technologies such as stereolithography (SLA), digital light processing (DLP), or liquid crystal display printing (LCD) can be used to achieve high precision. In some embodiments, any novel materials and output technologies known to those skilled in the art that meet relevant biocompatibility standards can be used to output the 3D occlusal pad model generated by this invention into a 3D occlusal pad.

[0053] This invention also proposes a method for generating a three-dimensional occlusal bolster (hereinafter referred to as the "model generation method"). This model generation method is executed by an electronic computing device (e.g., model generation device 1). The electronic computing device stores an intraoral three-dimensional scan image and a pre-defined occlusal depth value, wherein the intraoral three-dimensional scan image records information about a row of teeth in a first jaw and a central relationship between the first jaw and a second jaw. The main flowchart of the model generation method is depicted in... Figure 6 It includes steps S601 to S613.

[0054] In step S601, the electronic computing device, based on the central relationship, confirms that at least one target tooth in the dental arch information is the first tooth in the first jaw to come into contact with the second jaw. In some embodiments, the at least one target tooth is at least one of the two central incisors and the two lateral incisors in the dental arch information.

[0055] In step S603, the electronic computing device determines a pre-cutting depth position based on the incisal edge of the at least one target tooth and the pre-cutting depth value. In some embodiments, the pre-cutting depth position is located at the point where the incisal edge of the at least one target tooth extends apically towards the pre-cutting depth value.

[0056] In step S605, the electronic computing device determines a pre-marked occlusal plane based on the pre-marked bite depth position and the position of the palatolingual functional bite head of each of the two first molars in the dental information.

[0057] In step S607, the electronic computing device determines a biting contact point on the pre-planned biting plane based on the central relationship.

[0058] In step S609, the electronic computing device generates a base model in a three-dimensional occlusal pad model based on the dental information, wherein an adjacent surface of the base model can be adjacent to several consecutively arranged teeth in the dental information on the palatolingual side, and these consecutively arranged teeth include at least one target tooth in the dental information.

[0059] In some embodiments, the consecutively arranged teeth adjacent to the base model include two central incisors, two lateral incisors, and two canines in the dental arch information. In some embodiments, the two canines include a first canine and a second canine, and the base model extends laterally from a first palatolingual distal margin ridge of the first canine to a second palatolingual distal margin ridge of the second canine. In some embodiments, each of the two canines has a cleavage end, and a region is defined from each cleavage end towards the root, and the base model does not adjoin these regions.

[0060] In step S611, the electronic computing device generates a platform model in the three-dimensional occlusal pad model based on the pre-defined occlusal plane and the dental information. The platform model protrudes towards the palatal and lingual side from the base model to the at least one target tooth. An occlusal surface of the platform model falls on the pre-defined occlusal plane and covers the occlusal contact point.

[0061] In some embodiments, the model generation method further includes a step of receiving an extension length value by the electronic computing device. In these embodiments, the extension length value is a distance from the occlusal contact point to an edge of the occlusal surface.

[0062] In step S613, the electronic computing device transmits the three-dimensional occlusal pad model to a three-dimensional printer, so that the three-dimensional printer prints the three-dimensional occlusal pad object according to the three-dimensional occlusal pad model.

[0063] In addition to the steps described above, the model generation method provided by this invention can also perform other steps to have the functions of the model generation device 1 in the aforementioned embodiments and achieve the same technical effects. Those skilled in the art can directly understand how the model generation method provided by this invention performs these steps based on the aforementioned embodiments, has the same functions, and achieves the same technical effects, so it will not be described in detail here.

[0064] The model generation methods described in the above embodiments can be implemented by a computer storage medium storing several program instructions. After these program instructions are loaded into an electronic computing device (e.g., model generation device 1), they execute the model generation methods in the above embodiments. The computer storage medium can be an electronic product, such as: a read-only memory (ROM), a flash memory, a floppy disk, a hard disk, a compact disk (CD), a digital versatile disc (DVD), a portable disk, a database accessible via a network, or any other storage medium with the same function and known to those skilled in the art.

[0065] It should be noted that the prefixes "first" or "second" used before certain terms (e.g., jaw, canine) in the specification and claims of this invention are used to distinguish these terms. Unless otherwise specified, or if the order of these terms is not apparent from the context, the order of these terms is not restricted by the prefixes "first" or "second".

[0066] In summary, the apparatus for generating a three-dimensional occlusal elevation model, the method for generating a three-dimensional occlusal elevation, and the several program instructions stored in the computer storage medium provided by this invention utilize information recorded in the patient's intraoral three-dimensional scan file (i.e., the dental information of the first jaw and the central relationship between the first and second jaws) and pre-defined occlusal depth values ​​to generate a three-dimensional occlusal elevation model including a base model and a platform model. The three-dimensional occlusal elevation model can be printed out using a three-dimensional printer as the actual three-dimensional occlusal elevation. Since the process of generating the three-dimensional occlusal elevation model is based on the patient's intraoral three-dimensional scan file, it can be customized according to the patient's dental information (e.g., crown morphology). Furthermore, since the proximal surface of the base model in the three-dimensional occlusal elevation model can abut several consecutively arranged teeth on the palatolingual side, the three-dimensional occlusal elevation printed based on the three-dimensional occlusal elevation model can significantly improve occlusal force. Furthermore, the dimensions of the three-dimensional occlusal bolster model are cleverly arranged, thus avoiding various discomforts for users wearing three-dimensional occlusal bolsters printed according to the three-dimensional occlusal bolster model.

[0067] The above embodiments are used to illustratively illustrate some implementations of the present invention and to explain the technical features of the present invention, and are not intended to limit the scope and protection of the present invention. Any changes or equivalent arrangements that can be easily made by those skilled in the art are within the scope of the present invention, and the scope of protection of the present invention is determined by the claims.

Claims

1. A device for generating a three-dimensional occlusal bolster model, characterized in that, Include: A storage device stores an intraoral 3D scan image file, wherein the intraoral 3D scan image file records information about a row of teeth of a first jaw and a central relationship between the first jaw and a second jaw. An input interface receives a pre-cut bite depth value; and A processor, electrically connected to the memory and the input interface, performs the following operations: Based on this central relationship, at least one target tooth in the dental arch information is identified as the earliest tooth in the first jaw to come into contact with the second jaw. A pre-marked bite depth position is determined based on the apex of the at least one target tooth and the pre-marked bite depth value. Based on the pre-defined bite depth position and the palatolingual functional bite head positions of the two first molars in the dental arch information, a pre-defined occlusal plane is determined. The occlusal contact point on the pre-planned occlusal plane is determined based on this central relationship. Based on the dental arch information, a base model is generated in the three-dimensional occlusal bolster model. One proximal surface of this base model is capable of abutting several consecutively arranged teeth from the dental arch information on the palatolingual side. These consecutively arranged teeth include at least one target tooth from the dental arch information. A platform model in the three-dimensional occlusal pad model is generated based on the pre-defined occlusal plane and the dental arch information. The platform model protrudes towards the palatal and lingual side from the base model to the at least one target tooth. An occlusal surface of the platform model falls on the pre-defined occlusal plane and covers the occlusal contact point.

2. The apparatus as claimed in claim 1, characterized in that, The at least one target tooth is at least one of the two central incisors and two lateral incisors in the dental information.

3. The apparatus as described in claim 1, characterized in that, The teeth that the base model can connect to in a continuous arrangement include two central incisors, two lateral incisors, and two canines from the dental information.

4. The apparatus as described in claim 3, characterized in that, The two canines include a first canine and a second canine, and the base model extends laterally from a first palatolingual distal margin ridge of the first canine to a second palatolingual distal margin ridge of the second canine.

5. The apparatus as described in claim 3, characterized in that, Each of the two canines has a cutting edge, and a region is defined from the cutting edge of each canine towards the root. The base model is not adjacent to these regions.

6. The apparatus as claimed in claim 1, characterized in that, The pre-marked bite depth is located at the point where the incisal edge of the at least one target tooth extends apically towards the root at the pre-marked bite depth value.

7. The apparatus as claimed in claim 1, characterized in that, The input interface further receives an extension length value, and the extension length value is the distance from the occlusal contact point to an edge of the occlusal surface.

8. A method for generating a three-dimensional occlusal bolster, characterized in that, The method is executed by an electronic computing device that stores an intraoral 3D scan image and a pre-defined bite depth value. The intraoral 3D scan image records information about a row of teeth in a first jaw and a central relationship between the first jaw and a second jaw. The method includes the following steps: Based on this central relationship, at least one target tooth in the dental arch information is identified as the first tooth in the first jaw to come into contact with the second jaw. A pre-marked bite depth position is determined based on the apex of the at least one target tooth and the pre-marked bite depth value; Based on the pre-marked bite depth position and the position of the palatolingual functional bite head of each of the two first molars in the dental information, a pre-marked occlusal plane is determined; The occlusal contact point on the pre-planned occlusal plane is determined based on this central relationship; A base model in a three-dimensional occlusal pad model is generated based on the dental information, wherein an adjoining surface of the base model can be adjacent to several consecutively arranged teeth in the dental information on the palatolingual side, and these consecutively arranged teeth include at least one target tooth in the dental information. Based on the pre-defined occlusal plane and the dental arch information, a platform model is generated in the three-dimensional occlusal elevation model. This platform model protrudes towards the palatolingual side from the base model at the location corresponding to the at least one target tooth. An occlusal surface of the platform model falls on the pre-defined occlusal plane and covers the occlusal contact point. The three-dimensional occlusal shim model is transmitted to a three-dimensional printer, which then prints the three-dimensional occlusal shim based on the model.

9. The method as described in claim 8, characterized in that, The at least one target tooth is at least one of the two central incisors and two lateral incisors in the dental information.

10. The method as described in claim 8, characterized in that, The teeth that the base model can connect to in a continuous arrangement include two central incisors, two lateral incisors, and two canines from the dental information.

11. The method as described in claim 10, characterized in that, The two canines include a first canine and a second canine, and the base model extends laterally from a first palatolingual distal margin ridge of the first canine to a second palatolingual distal margin ridge of the second canine.

12. The method as described in claim 10, characterized in that, Each of the two canines has a cutting edge, and a region is defined from the cutting edge of each canine towards the root. The base model is not adjacent to these regions.

13. The method as described in claim 8, characterized in that, The pre-marked bite depth is located at the point where the incisal edge of the at least one target tooth extends apically towards the root at the pre-marked bite depth value.

14. The method as described in claim 8, characterized in that, It also includes the following steps: The electronic computing device receives an extension length value; The distance from the occlusal contact point to one edge of the occlusal surface is the extension length value.

15. A computer storage medium, characterized in that, After a plurality of program instructions stored in the computer storage medium are loaded by an electronic computing device, the electronic computing device executes the plurality of program instructions to implement the method as described in any one of claims 8 to 14.

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