Molar blocking occlusal pad design and preparation method thereof

Abstract

The invention provides a molar blocking occlusal pad design and a preparation method thereof, and belongs to the technical field of adjuvant therapy equipment.The molar blocking occlusal pad design comprises the steps that an upper and lower jaw structure model is constructed, an occlusal surface is determined, and the occlusal state when the jaw position is stopped is simulated; according to the design requirements of the upper and lower jaw structure model and the occlusal pad, drawing lines in the upper and lower jaw structure model to obtain a main body structure of the occlusal pad, gradually heightening the occlusal surface of the main body structure of the occlusal pad until the occlusal surface is in contact with involution teeth in the upper and lower jaw structure model, smoothening the cheek-tongue side, and determining the design structure of the occlusal pad; drawing lines on the upper and lower jaw structure model to obtain main body structures of two blockers on the tongue side, and obtaining design structures of the blockers; according to the design structure of the occlusal pad and the two blockers, the molar blocking occlusal pad integrated structure is obtained. The molar blocking occlusal pad structure designed by the method can weaken and even block grinding and tight biting of teeth, and is beneficial to prevention and treatment of molar movement from the source.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary treatment equipment, and in particular to a molar blocking occlusal pad design and a preparation method thereof. Background Art

[0002] Bruxism is considered to be the activity of the chewing muscles of an individual during sleep or wakefulness, and is divided into sleep bruxism (SB) and awake bruxism (AB). The main feature of sleep bruxism is a rhythmic or non-rhythmic activity of the chewing muscles during sleep. Awake bruxism is the activity of chewing muscles in the waking state, characterized by repeated or continuous tooth contact with or without teeth grinding or clenching. It can be seen that the biggest feature of bruxism is the contraction of the chewing muscles, and the movement or tendency of the mandible accompanied by teeth grinding and clenching.

[0003] Under normal conditions, the upper and lower teeth are in contact and in occlusion, and the bite force generated helps chew food and forms a physiological stimulation to the teeth and periodontal tissues. However, for individuals with bruxism, the abnormal bite force formed by clenching the teeth is usually higher than the maximum bite force in the conscious state, which becomes a risk factor for tooth fracture, periodontitis, masticatory muscle pain, and temporomandibular joint diseases. In addition, frequent tooth grinding can also cause non-physiological wear of the tooth anatomical structure, wedge-shaped defects in the tooth neck, and gum recession. Although bruxism does not pose a direct threat to the life and health of an individual, long-term bruxism activities have a profound impact on the individual's oral and physical and mental health, and seriously hinder the improvement of the individual's quality of life.

[0004] The cause of bruxism is multifactorial and not yet fully understood, so there is a lack of specific treatment for bruxism. Common treatments for bruxism include occlusal correction, biofeedback therapy, psychological behavioral intervention, and drug therapy. Stable bite pads are one of the most widely recognized and widely used treatment methods because of their conservative and reversible nature. They can be worn on the maxillary or mandibular to reduce tooth wear, disperse abnormal bite forces to the entire dental arch, and reduce the destructive effects of abnormal bite forces on individual teeth. However, existing stable bite pads can only improve the symptoms of bruxism, but cannot block the grinding and clenching of teeth from the source, and the effect of bruxism blocking treatment is poor. Summary of the invention

[0005] The present invention provides a molar blocking occlusal pad design and a preparation method thereof. The molar blocking occlusal pad structure designed by the method can weaken or even block the grinding and clenching of teeth, which is helpful to prevent and treat the molar activity from the source.

[0006] The present invention provides a method for designing a molar blocking occlusal pad, which specifically comprises the following steps:

[0007] Construct the upper and lower jaw structure model, determine the occlusal surface and simulate the occlusal state when the jaw is in the rest position;

[0008] According to the design requirements of the upper and lower jaw structure models and the bite pad, the main structure of the bite pad is obtained by drawing lines in the upper and lower jaw structure models, and the occlusal surface of the main structure of the bite pad is gradually increased until it contacts the opposing teeth in the upper and lower jaw structure models, and the buccal and lingual sides are smoothed to determine the design structure of the bite pad;

[0009] The main structures of the two blockers located on the lingual side are obtained by tracing lines on the upper and lower jaw structure models, both of which include upper, middle and lower structures; the main structure of the blocker is carved so that the lower structure of the blocker is located on the lingual side of the first premolar and the first molar, the lower edge of the lower structure is flush with the lingual edge of the bite pad, and the front edge and the rear edge extend upward and thicken along the mesial and distal sides of the first premolar and the first molar, respectively; the mesiodistal direction of the middle structure of the blocker is consistent with the lower structure, and the buccal-lingual direction transitions to the lingual side and thickens; the upper structure is gradually raised from the first premolar to the lingual side of the first molar until it contacts the maxillary palatal tissue, and the design structure of the blocker is obtained;

[0010] According to the design structure of the bite pad and the two blockers, an integrated structure of the molar blocking bite pad is obtained.

[0011] Preferably, the design requirements of the bite pad include the design requirements for the coverage of the bite pad on the labial and buccal sides for friction retention, the design requirements for the bite pad to stop at the high point of the shape at the lingual edge, and the design requirements for the thickness of the occlusal surface in the premolar and molar areas.

[0012] Preferably, the coverage of the bite pad for frictional retention on the labial and buccal sides is 2 mm wide to provide frictional retention; the thickness of the bite surface in the premolar and molar area is 1 mm-2 mm.

[0013] Preferably, the thickness of the front edge and the rear edge extending upward along the mesial of the first premolar and the distal of the first molar respectively is 2 mm; the thickness of the buccal-lingual transition to the lingual side is 2 mm.

[0014] Preferably, it also includes: the terminal structure of the upper structure in the design structure of the blocker is oval-shaped, forming an anatomical structure consistent with the soft tissue structure of the maxillary palate.

[0015] Preferably, constructing the upper and lower jaw structure model comprises the following steps:

[0016] Through oral 3D scanning, we obtain 3D image data of maxillary dentition and palate, mandibular dentition, and maxillary and mandibular occlusal relationship. Based on the 3D image data, we perform maxillary and mandibular refinement, occlusal plane design, maxillary and mandibular trimming, and occlusal design. Finally, we construct maxillary and mandibular structure models based on the full maxillary dentition, full mandibular dentition, and maxillary palate soft tissue.

[0017] Preferably, the occlusal plane design comprises the following steps:

[0018] The occlusal surface is formed from the mesio-incisal angle of the maxillary central incisor to the mesio-buccal cusps of the bilateral first molars in the maxillary and mandibular structure models.

[0019] Preferably, the bite design comprises the following steps:

[0020] A SAM virtual articulator was constructed in the upper and lower jaw structure model. The anterior teeth open bite was 4 mm, the left and right Bennett angles were designed to be 7°, and the left and right condylar inclinations were designed to be 35°. The occlusal state design was completed to simulate the occlusal state in the rest jaw position.

[0021] The present invention also proposes a method for preparing a molar blocking bite pad, and obtains a molar blocking bite pad by performing 3D printing and polishing based on the bite pad material according to the complete structure of the molar blocking bite pad designed according to the molar blocking bite pad design method.

[0022] The present invention also provides a molar blocking occlusal pad, which is designed and constructed according to the molar blocking occlusal pad design method.

[0023] Beneficial effects of the present invention:

[0024] The present invention proposes a design method for a molar blocking occlusal pad. The method constructs an upper and lower jaw structure model to simulate the occlusal state in the rest jaw position. Combined with the distribution of the upper and lower jaw structures, the method can adaptively design bilateral blockers according to the patient's condition. The blockers are more suitable for the patient's actual upper and lower jaw structures and actual occlusal state. Compared with traditional occlusal pads, the molar blocking occlusal pad made based on the proposed method can separate the upper and lower teeth through self-feedback, thereby eliminating the molar activity from the source.

[0025] The molar blocking bite pad proposed by the present invention has a blocking structure designed on the lingual side. The structure is small in size and has no obvious interference with the movement of the tongue in the oral cavity, thereby reducing the foreign body sensation of the patient.

[0026] The molar blocking occlusal pad proposed in the present invention is made by 3D printing technology, which can realize the preparation of a feedback device with a specially designed structure. The molar blocking occlusal pad made by 3D printing is easier for patients to wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a flow chart of a method for designing a molar blocking bite pad according to an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the jaw rest gap when the individual jaw rests in the jaw rest position according to an embodiment of the present invention;

[0029] Figure 3The three-dimensional image of the oral cavity scan of the upper and lower jaw dentition and the occlusal relationship diagram of the embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of an occlusal plane according to an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of the design of anterior teeth open bite in a virtual jaw frame according to an embodiment of the present invention;

[0032] Figure 6 is a three-dimensional image of anterior teeth open bite design according to an embodiment of the present invention;

[0033] Figure 7 is a schematic diagram of an intraoral bite record design according to an embodiment of the present invention;

[0034] Figure 8 is a schematic diagram of the design of a mandibular bite pad according to an embodiment of the present invention;

[0035] Fig. 9 is a schematic diagram of a stable and balanced occlusal contact between the maxillary teeth and the mandibular occlusal pad plane after wearing the occlusal pad according to an embodiment of the present invention;

[0036] Fig.10 2. The occlusal view of the molar blocking bite pad blocker according to an embodiment of the present invention;

[0037] Fig.11 is a side view of the bottom structure of the molar blocker according to an embodiment of the present invention;

[0038] Fig.12 The middle and upper structures of the molar blocker according to the embodiment of the present invention;

[0039] Fig.13 is a three-dimensional design schematic diagram of the occlusal surface view of the main structure of the molar blocking occlusal pad according to an embodiment of the present invention;

[0040] Fig.14 is a three-dimensional design schematic diagram of a side view of the main structure of a molar blocking bite pad according to an embodiment of the present invention;

[0041] Fig.15 is a schematic diagram of the contact between the blocking structure and the upper jaw according to an embodiment of the present invention;

[0042] Fig.16 It is a three-dimensional diagram of the molar blocking bite pad according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] Example 1

[0045] This embodiment provides a molar blocking occlusal pad design and its preparation method. Molar activity is mainly manifested in rhythmic or non-rhythmic activity of the chewing muscles, repeated or continuous tooth contact with or without tooth grinding or clenching. The mandibular resting space refers to the state of resting and static state of the lower jaw when the natural dentition exists, when the mouth is not chewing, swallowing, or talking, the upper and lower dentitions are naturally separated, and there is no jaw contact, which is called the mandibular resting position. At this time, the upper and lower teeth are not in contact, and there is a wedge-shaped gap from front to back between the upper and lower teeth, which is larger at the front end and smaller at the back end, which is called the mandibular resting space. Generally, the average value of the mandibular resting space in the premolar area is 2-3mm. Figure 2 As shown. This design starts with a full-dentition bite pad worn on the mandible, using the resting jaw gap between human natural teeth, and by designing an auxiliary structure on the lingual side of the bite pad, when the upper and lower jaws are in the resting jaw position, the blocker has no contact with the maxillary palate, and when the upper and lower teeth are in contact or even grinding or clenching, the blocker stimulates the soft tissue of the upper jaw. When a person receives the stimulation signal, the upper and lower jaws appear to be slightly open and closed, thereby achieving contact and separation of the upper and lower teeth, thereby blocking the grinding activity and reducing the occurrence of grinding events from the source.

[0046] Patients can wear the molar blocking occlusal pad by themselves. When the mandibular dentition contacts during sleep or wakefulness and the upper and lower teeth are clenched, the end structure of the blocker contacts the maxillary palate tissue, thereby slightly stimulating the maxillary palate tissue, causing the upper and lower teeth to separate, the stimulation disappears, and the molar activity stops.

[0047] The design of the device is divided into two modules: using oral digital scanning technology to obtain the data of the upper and lower jaws and the soft tissue structure and occlusal relationship of the maxillary and maxillary palate; using computer-aided design (CAD) technology to study the design technology of the molar blocker and establish a digital model of the molar blocker bite pad; and using 3D printing technology to complete the production of the molar blocker bite pad. The specific steps are as follows:

[0048] S1: Construct the upper and lower jaw structure models, determine the occlusal surface and simulate the occlusal state when the jaw is in the rest position.

[0049] Specifically: Scan the 3D image data of maxillary dentition and palate, mandibular dentition, and maxillary and mandibular occlusion relationship and save them in stl. format to construct the maxillary and mandibular complete dentition and maxillary and palate soft tissue structure models, such as Figure 3 The scan data was imported into the dental design software for the subsequent design of the molar blocking bite pad.

[0050] The dental 3D design software used in this embodiment is 3Shape Dental system. Before designing, 3D model adjustment is performed, including fine processing of the upper and lower jaws, occlusal plane design, trimming of the upper and lower jaws and occlusal design according to the 3D image data, and construction of the upper and lower jaw structure model based on the maxillary full dentition, the mandibular full dentition and the maxillary palate soft tissue:

[0051] S1.1: Copy the 3D oral scan stl. format data to the computer desktop and save it.

[0052] S1.2: Open 3Shape Dental system, click on the taskbar to create a new "Order Form", and select "Scan Settings" in the "Order Form": Object Type - Digital Impression. Select the mandibular teeth in the "Order Details" interface, click RPD, and generate a case ID. Right-click the case ID, select "Import Scan", select the stored oral scan data in the corresponding location on the computer, and open "Lower JawScan" and "Upper JawScan".

[0053] S1.3: Adjust the upper and lower jaw scans: Select the case and refine the scan model in the "Adjust Scan" dialog box on the design page to achieve the purpose of "removing scan debris", "closing holes" and "improving scan boundaries".

[0054] S1.4: Occlusal plane design: Manually set the occlusal plane by right-clicking the mouse. The occlusal plane is an imaginary plane formed by the mesio-incisal angle of the maxillary central incisor to the mesio-buccal cusps of the bilateral first molars, which basically divides the inter-maxillary distance in half. Figure 4 shown.

[0055] S1.5: Reshape the upper and lower jaws: In the carving toolkit, use the toolkit to set the parameters of the wax knife to repair the undercuts and wedge-shaped defects in the dentition. After the trimming is completed, click the next step to "Observe and fill the undercuts". According to the positioning direction of the designed workpiece, manually fill the undercuts to ensure that the molar blocking bite pad printed in the future is easy to remove and wear while fully ensuring retention.

[0056] S1.6: Occlusal design: Click the "Virtual Occlusion" button on the right, select the virtual articulator, and design the parameters in the pop-up dialog box: The SAM jaw frame is selected here, the front teeth opening distance is set to 4mm (cutting guide pin), the left and right sides of the Bennett angle are designed to 7°, and the left and right condylar inclinations are designed to 35°. Finally, save the design parameters to complete the occlusal state design. At this time, the occlusal state between the posterior teeth and the anterior teeth presents an inverted triangle, such as Figure 5 and Figure 6As shown in the figure, when the anterior teeth open the jaw by 4mm and the second molars open the jaw by about 1mm, the premolars open a gap of about 2-3mm, which is close to the height of the resting jaw gap. The occlusal design here fully simulates the occlusal state of the patient in the resting jaw position.

[0057] The occlusal design here can also be completed by another method: record the distance from the bottom of the nose to the bottom of the chin when the patient's cusps are in the interdigitated position, VD1, and then ask the patient to open his mouth slightly, and inject the fluid silicone rubber occlusal recording material between the bilateral premolars and molars to the resting jaw position, and keep it still until the material hardens, and measure the distance from the bottom of the nose to the bottom of the chin when the patient's cusps are in the resting jaw position again. VD2, ensure that VD2-VD1 is 2 to 3mm, such as Figure 7 As shown, the oral scan is now occlusally registered.

[0058] S2: According to the maxillary and mandibular structure models and the design requirements of the bite pad, draw lines in the maxillary and mandibular structure models to obtain the main structure of the bite pad, and gradually increase the occlusal surface of the main structure of the bite pad until it contacts the opposing teeth in the maxillary and mandibular structure models, smooth the buccal and lingual sides, and determine the design structure of the bite pad. The design requirements of the bite pad include the design requirements for the coverage of the bite pad on the labial and buccal sides for friction retention, the design requirements for the bite pad to stop at the high point of the shape on the lingual edge, and the design requirements for the thickness of the occlusal surface in the premolar and molar area. Among them, the coverage of the bite pad on the labial and buccal sides for friction retention is 2mm wide to provide friction retention; the thickness of the occlusal surface in the premolar and molar area is 1mm-2mm. The design structure of the bite pad, the specific structure is as follows: Figure 8 After the patient wears the designed bite pad, when the upper and lower jaws are in the centric relationship (CR), the bilateral condyles are located at the most anterior and upper position of the articular concavity, close to the weakest avascular part in the center of the articular disc, the bite pad plane forms a stable and balanced occlusal contact with the maxillary teeth, as shown in Figure 1. Fig. 9 shown.

[0059] S3: Draw lines on the upper and lower jaw structure models to obtain the main structures of the two blockers located on the lingual side, both of which include upper, middle and lower structures; carve the main structures of the blockers to obtain the design structure of the blockers.

[0060] Specifically, the lower structure of the blocker is located on the lingual side of the first premolar and the first molar, the lower edge is flush with the lingual edge of the bite pad, and the front edge and the rear edge extend upward along the mesial of the first premolar and the distal of the first molar to increase the thickness by about 2 mm, so as to ensure the strength and reduce the foreign body sensation of the patient. Fig.10 and Fig.11 shown.

[0061] Make the mesiodistal direction of the middle structure of the blocker consistent with the lower structure, and thicken 2mm in the buccal-lingual direction to the lingual side to avoid fracture; gradually increase the upper structure from the first premolar to the lingual side of the first molar until it contacts the maxillary palatal tissue, such as Fig.12 As shown in the figure. When the patient is in the resting jaw position, the upper end of the blocker is close to the palatal mucosa but not in full contact; when the patient is in the occlusal state, the upper end of the blocker is against the palatal mucosa, which slightly stimulates the patient. After receiving the stimulation, the patient clenches and releases the contact teeth, the occlusal contact state is released, and the molars are blocked. The upper end structure of the blocker is oval, which forms an anatomical structure with the soft tissue structure of the maxillary palate.

[0062] S4: According to the design structure of the bite pad and two blockers, the integrated structure of the molar blocking bite pad is obtained. The schematic diagram of the main structure design of the molar blocking bite pad is as follows: Fig.13 and Fig.14 The schematic diagram of the contact between the blocking structure and the upper jaw is shown in Fig.15 As shown, the three-dimensional image of the molar blocking bite pad is as follows Fig.16 shown.

[0063] S5: Based on the complete structure of the molar blocking bite pad, 3D printing and polishing are performed based on the bite pad material to obtain the molar blocking bite pad.

[0064] The bite force detection device designed by the method proposed in the present invention meets the following characteristics:

[0065] (1) The molar blocking bite pad is placed inside the oral cavity, and its printing material must meet the requirements of human biological health and safety. (2) The blocking structure is designed on the lingual side of the molar blocking bite pad. The structure is small in size and has no obvious interference with the movement of the tongue in the oral cavity, reducing the patient's foreign body sensation. (3) The end of the blocker is designed to be oval, which adapts to the shape of the patient's upper jaw, achieving close contact while reducing irritation to the patient.

[0066] Compared with the prior art, the present invention has the following outstanding effects:

[0067] (1) Using digital technology, we explored the design method of blocking bite pads and established a digital model of molar blocking bite pads to facilitate technology promotion. (2) Using 3D printing technology, we can complete the production of molar blocking bite pads and promote practical applications. (3) The molar blocking bite pad can generate real-time stimulation when the molar grinding event is about to occur, prompting the upper and lower teeth to separate and break contact, thereby blocking the molars from the source and achieving the purpose of fundamentally curing the disease. The difference between this design and previous designs is that it explores the digital path of dental disease diagnosis and treatment, blocking the continuous progression of molar grinding events from the source.

[0068] Bruxism is a common symptom of the oral and maxillofacial region with a high incidence rate. Due to its complex etiology, there is currently no specific treatment. Long-term bruxism brings various physical and mental distress to patients. Therefore, researching and developing the bruxism blocking bite pad proposed in the present invention has great potential for improving bruxism. The main reasons include the following aspects: First, compared with traditional bite pads, the bruxism blocking bite pad can separate the upper and lower teeth through self-feedback, thereby eliminating bruxism from the source; secondly, with the update of 3D printing technology and dental materials, specially designed feedback devices are easier to produce; in addition, simple and convenient blocking bite devices are easier for patients to wear. Although the device has not yet been promoted, its safety and effectiveness will give it broad application prospects. Therefore, the bruxism blocking device designed based on biofeedback has good application value for improving patients' bruxism.

[0069] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for designing a molar blocking occlusal pad, characterized in that: The following steps are involved: Construct the upper and lower jaw structure model, determine the occlusal surface and simulate the occlusal state when the jaw is in the rest position; According to the design requirements of the upper and lower jaw structure models and the bite pad, the main structure of the bite pad is obtained by drawing lines in the upper and lower jaw structure models, and the occlusal surface of the main structure of the bite pad is gradually increased until it contacts the opposing teeth in the upper and lower jaw structure models, and the buccal and lingual sides are smoothed to determine the design structure of the bite pad; The main structures of the two blockers located on the lingual side are obtained by tracing lines on the upper and lower jaw structure models, both of which include upper, middle and lower structures; the main structure of the blocker is carved so that the lower structure of the blocker is located on the lingual side of the first premolar and the first molar, the lower edge of the lower structure is flush with the lingual edge of the bite pad, and the front edge and the rear edge extend upward and thicken along the mesial and distal sides of the first premolar and the first molar, respectively; the mesiodistal direction of the middle structure of the blocker is consistent with the lower structure, and the buccal-lingual direction transitions to the lingual side and thickens; the upper structure is gradually raised from the first premolar to the lingual side of the first molar until it contacts the maxillary palatal tissue, and the design structure of the blocker is obtained; According to the design structure of the bite pad and the two blockers, an integrated structure of the molar blocking bite pad is obtained.

2. The method for designing a molar blocking occlusal pad according to claim 1, characterized in that: The design requirements of the bite pad include the design requirements for the coverage of the bite pad on the labial and buccal sides for friction retention, the design requirements for the bite pad to stop at the high point of the shape at the lingual edge, and the design requirements for the thickness of the occlusal surface in the premolar and molar areas.

3. The method for designing a molar blocking occlusal pad according to claim 2, characterized in that: The coverage of the bite pad for friction retention on the labial and buccal sides is 2 mm wide to provide friction retention; the thickness of the bite surface in the premolar and molar area is 1 mm-2 mm.

4. The method for designing a molar blocking occlusal pad according to claim 1, characterized in that: The front edge and the rear edge respectively extend upward along the mesial of the first premolar and the distal of the first molar and thicken by 2 mm; the thickness of the buccal-lingual transition to the lingual side is 2 mm.

5. The method for designing a molar blocking occlusal pad according to claim 1, characterized in that: Also includes: The upper structure terminal structure of the blocker is oval in shape, and is anatomically consistent with the soft tissue structure of the maxillary palate.

6. The method for designing a molar blocking occlusal pad according to claim 1, characterized in that: The method of constructing the upper and lower jaw structure model comprises the following steps: Through oral 3D scanning, we obtain 3D image data of maxillary dentition and palate, mandibular dentition, and maxillary and mandibular occlusal relationship. Based on the 3D image data, we perform maxillary and mandibular refinement, occlusal plane design, maxillary and mandibular trimming, and occlusal design. Finally, we construct maxillary and mandibular structure models based on the full maxillary dentition, full mandibular dentition, and maxillary palate soft tissue.

7. The method for designing a molar blocking occlusal pad according to claim 6, characterized in that: The occlusal plane design comprises the following steps: The occlusal surface is formed from the mesio-incisal angle of the maxillary central incisor to the mesio-buccal cusps of the bilateral first molars in the maxillary and mandibular structure models.

8. The method for designing a molar blocking occlusal pad according to claim 6, characterized in that: The occlusal design comprises the following steps: A SAM virtual articulator was constructed in the upper and lower jaw structure model. The anterior teeth open bite was 4 mm, the left and right Bennett angles were designed to be 7°, and the left and right condylar inclinations were designed to be 35°. The occlusal state design was completed to simulate the occlusal state in the rest jaw position.

9. A method for preparing a molar blocking bite pad, characterized in that: According to the complete structure of the molar blocking bite pad designed by the molar blocking bite pad design method according to any one of claims 1 to 8, 3D printing and polishing are performed based on the bite pad material to obtain the molar blocking bite pad.

10. A molar blocking bite pad, characterized in that: The molar blocking occlusal pad is designed and constructed according to the method for designing a molar blocking occlusal pad according to any one of claims 1 to 8.

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