A bite blocking occlusal pad design and method of making same

Abstract

This invention provides a design and preparation method for a molar blocking occlusal pad, belonging to the technical field of auxiliary treatment devices. The method includes: constructing a maxillary and mandibular structural model, determining the occlusal surface, and simulating the occlusal state in a resting jaw position; based on the maxillary and mandibular structural model and the design requirements of the occlusal pad, drawing lines in the maxillary and mandibular structural model to obtain the main structure of the occlusal pad, gradually increasing the occlusal surface of the main structure of the occlusal pad until it contacts the opposing teeth in the maxillary and mandibular structural model, smoothing the buccal and lingual sides, and determining the design structure of the occlusal pad; drawing lines in the maxillary and mandibular structural model to obtain the main structures of two interlockers located on the lingual side, obtaining the design structure of the interlockers; and obtaining an integrated structure of the molar blocking occlusal pad based on the design structure of the occlusal pad and the two interlockers. The molar blocking occlusal pad structure designed by this method can weaken or even block tooth grinding and clenching, helping to prevent and treat molar activity from the source.

Description

Technical Field

[0001] This invention relates to the field of auxiliary therapeutic equipment technology, specifically to a design and preparation method of a molar blocking occlusal pad. Background Technology

[0002] Bruxism is considered to be the activity of the masticatory muscles during sleep or wakefulness, and is divided into sleep bruxism (SB) and awake bruxism (AB). The main characteristic of sleep bruxism is rhythmic or non-rhythmic activity of the masticatory muscles during sleep. Awake bruxism is masticatory muscle activity during wakefulness, characterized by repetitive or continuous tooth contact with or without tooth grinding or clenching. Therefore, the most prominent feature of bruxism is the contraction of the masticatory muscles, tooth grinding, clenching, and accompanying mandibular movements or tendencies.

[0003] Under normal conditions, the contact and occlusion of the upper and lower teeth generate occlusal forces that aid in chewing food and provide physiological stimulation to the teeth and periodontal tissues. However, in individuals with bruxism, the abnormal occlusal force generated by clenching teeth is usually higher than the maximum conscious occlusal force, becoming a risk factor for tooth fracture, periodontal inflammation, masticatory muscle pain, and temporomandibular joint disorder. Furthermore, frequent tooth grinding can also cause non-physiological wear of the tooth's anatomical structure, wedge-shaped defects at the cervical region of the tooth, and gingival recession. Although bruxism does not pose a direct threat to an individual's life or health, long-term bruxism has a profound impact on oral and mental health, severely hindering the improvement of an individual's quality of life.

[0004] The causes of bruxism are multifactorial and not fully understood, therefore, there is a lack of specific treatments. Common treatments for bruxism include occlusal correction, biofeedback therapy, psychological and behavioral interventions, and medication. Stable occlusal splints are currently one of the most widely accepted and used treatment methods due to their conservative and reversible nature. They can be worn on the upper or lower jaw to reduce tooth wear, distribute abnormal occlusal forces across the entire dental arch, and reduce the destructive effect of these forces on individual teeth. However, existing stable occlusal splints can only improve bruxism symptoms and cannot stop tooth grinding and clenching at the source, resulting in poor effectiveness of bruxism intervention. Summary of the Invention

[0005] This invention provides a design and preparation method for a molar blocking occlusal pad. The molar blocking occlusal pad structure designed by this method can reduce or even block tooth grinding and clenching, which helps to prevent and treat molar activity from the source.

[0006] This invention proposes a design method for a molar blocking occlusal pad, which specifically includes the following steps:

[0007] Construct a model of the upper and lower jaw structure, determine the occlusal surfaces, and simulate the occlusal state when the jaw is at rest.

[0008] Based on the design requirements of the maxillary and mandibular structural models and the occlusal pad, the main structure of the occlusal pad is obtained by tracing lines in the maxillary and mandibular structural models. The occlusal surface of the main structure of the occlusal pad is gradually increased until it contacts the opposing teeth in the maxillary and mandibular structural models. The buccal and lingual sides are smoothed to determine the design structure of the occlusal pad.

[0009] The main structures of two lingual blockers located on the lingual side are obtained by tracing the upper and lower jaw structural models. Each blocker includes an upper, middle, and lower structure. The main structure of the blocker is sculpted 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 occlusal pad, and the anterior and posterior edges extend upward and thicken along the mesial and distal sides of the first premolar, respectively. The mesial and distal direction of the middle structure of the blocker is aligned with the lower structure, and the buccal and lingual direction is gradually thickened towards the lingual side. 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, thus obtaining the designed structure of the blocker.

[0010] Based on the design structure of the occlusal pad and the two interlockers, an integrated structure of the molar blocking occlusal pad is obtained.

[0011] Preferably, the design requirements for the occlusal pad include the design requirements for the coverage of the occlusal pad on the labial and buccal sides for frictional retention, the design requirements for the occlusal pad to stop at the highest point of its shape on the lingual side, and the design requirements for the thickness of the occlusal surface in the premolar and molar regions.

[0012] Preferably, the occlusal pad has a coverage of 2 mm on the labial and buccal sides for frictional retention, providing frictional retention; the occlusal surface has a thickness of 1 mm to 2 mm in the premolar and molar regions.

[0013] Preferably, the thickness of the anterior and posterior edges extending upward along the mesial and distal sides of the first premolar is 2 mm, respectively; the thickness of the buccal-lingual transitional thickening is 2 mm.

[0014] Preferably, it further includes: the upper structure of the blocking device is oval-shaped at the end, which conforms to the anatomical structure of the soft tissue of the maxilla and palate.

[0015] Preferably, the construction of the maxillary and mandibular structural model includes the following steps:

[0016] Three-dimensional image data of the maxillary dentition and palate, mandibular dentition, and occlusal relationship are obtained through oral 3D scanning. Based on the 3D image data, the maxilla and mandible are refined, the occlusal plane is designed, and the maxilla and mandible and occlusal design are modified to construct a maxillary and mandibular structural model based on the maxillary full dentition, mandibular full dentition, and maxillary palate soft tissue.

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

[0018] The occlusal surface is formed from the mesial incisal angle of the maxillary central incisor to the mesial buccal cusp of the bilateral first molars in the maxillary and mandibular structural model.

[0019] Preferably, the occlusal design includes the following steps:

[0020] A virtual SAM occlusal articulation was constructed in the maxillary and mandibular structural models. The anterior teeth open bite was 4mm, the Bennett angle was designed to be 7° on both sides, and the condylar inclination on both sides was designed to be 35°. The occlusal state design was completed to simulate the occlusal state when the jaw is at rest.

[0021] The present invention also proposes a method for preparing a molar blocking occlusal pad, wherein the complete structure of the molar blocking occlusal pad is designed according to the molar blocking occlusal pad design method, and the occlusal pad material is 3D printed and polished to obtain the molar blocking occlusal pad.

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

[0023] The beneficial effects of this invention are:

[0024] This invention proposes a design method for a molar blocking occlusal pad. This method constructs a model of the upper and lower jaw structure to simulate the occlusal state when the jaw is at rest. Combined with the distribution of the upper and lower jaw structure, it can adaptively design bilateral blocking devices according to the patient's condition, which is more suitable for the patient's actual upper and lower jaw structure 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 jaw teeth through self-feedback, thereby relieving molar activity from the source.

[0025] The present invention proposes a lingual design blocking structure for a molar blocking occlusal pad. This structure is small in size and does not significantly interfere with the movement of the tongue in the oral cavity, thus reducing the patient's foreign body sensation.

[0026] The molar blocking occlusal pad proposed in this invention is made using 3D printing technology, which enables the fabrication of a feedback device with a specially designed structure. The 3D-printed molar blocking occlusal pad is easier for patients to wear. Attached Figure Description

[0027] Figure 1 This is a flowchart of the design method of the molar blocking occlusal pad according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the occlusal gap when an individual is in a resting jaw position according to an embodiment of the present invention;

[0029] Figure 3These are three-dimensional images of the maxillary and mandibular dentition and their occlusal relationship diagrams, as shown in the embodiments of the present invention.

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

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

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

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

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

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

[0036] Figure 10 This is an occlusal view of the molar blocking occlusal pad blocker according to an embodiment of the present invention;

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

[0038] Figure 12 This refers to the middle and upper structures of the molar blocker in this embodiment of the invention;

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

[0040] Figure 14 This is a three-dimensional design schematic diagram of the main structure of the molar blocking occlusal pad according to an embodiment of the present invention;

[0041] Figure 15 This is a schematic diagram showing the contact between the blocking structure and the upper jaw in an embodiment of the present invention;

[0042] Figure 16 This is a three-dimensional diagram of the molar blocking occlusal pad according to an embodiment of the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] Example 1

[0045] This embodiment provides a design and preparation method for a molar blocking occlusal pad. Molar activity is mainly manifested as rhythmic or non-rhythmic movements of the masticatory muscles, repetitive or continuous tooth contact with or without tooth grinding or clenching. The resting occlusal space refers to the resting occlusal position where, in the presence of the natural dentition, the mandible is in a resting, static state when the mouth is not chewing, swallowing, or speaking; the upper and lower dentitions are naturally separated without occlusal contact. At this time, the upper and lower teeth do not contact each other, and there is a wedge-shaped gap between the upper and lower teeth from front to back, larger at the front and smaller at the back; this is called the resting occlusal space. Generally, the average resting occlusal space in the premolar region is 2-3 mm. Figure 2 As shown. This design starts with a full-arch occlusal splint worn on the lower jaw. Utilizing the resting occlusal space between human natural teeth, an auxiliary structure is designed on the lingual side of the occlusal splint. When the upper and lower jaws are in a resting occlusal position, the splint does not contact the maxillary palate. However, when the upper and lower teeth contact, grind, or clench, the splint stimulates the soft tissue of the maxilla. Upon receiving the stimulation signal, the person causes the upper and lower jaws to slightly open, thereby achieving separation of the upper and lower teeth and blocking molar activity, thus reducing the occurrence of molar events from the source.

[0046] Patients can wear this molar blocking occlusal pad themselves. When the patient is asleep or awake and the lower teeth come into contact and the upper and lower teeth clench, the end structure of the blocker comes into contact with the maxillary palate tissue, which in turn produces a slight stimulation to the maxillary palate tissue, causing the upper and lower teeth to separate. When the stimulation disappears, the molar activity stops.

[0047] The device is designed in two modules: first, using digital oral scanning technology to acquire data on the soft tissue structure and occlusal relationship of the entire maxillary and mandibular dentition and the maxillary palate; second, using computer-aided design (CAD) technology to study the design technology of molar blocking devices and establish a digital model of the molar blocking occlusal pad; and third, using 3D printing technology to fabricate the molar blocking occlusal pad. The specific steps are as follows:

[0048] S1: Construct a model of the upper and lower jaw structure, determine the occlusal surfaces, and simulate the occlusal state when the jaw is at rest.

[0049] Specifically: Three-dimensional image data of the maxillary dentition and palate, mandibular dentition, and occlusal relationship are scanned and saved in STL format to construct a soft tissue structure model of the entire maxillary and mandibular dentition and the maxillary palate, such as... Figure 3 As shown. The scan data is imported into dental design software for subsequent design of molar blocking occlusal pads.

[0050] The dental 3D design software used in this embodiment is 3Shape Dental system. Before design, the 3D model is adjusted, including refining the maxilla and mandible based on 3D image data, designing the occlusal plane, and refining the maxilla and mandible and occlusal design. This constructs a maxillary and mandibular structural model based on the full maxillary dentition, the full mandibular dentition, and the soft tissue of the maxillary palate.

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

[0052] S1.2: Open 3Shape Dental system, click to create a new "Order Form" in the taskbar, and in the "Scan Settings" of the "Order Form", select: Object Type - Digital Impression. In the "Order Details" interface, select the mandibular teeth, click RPD, and generate a case ID. Right-click the case ID, select "Import Scan", select the saved 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 Scans" dialog box on the design page to achieve the goals of "removing scan debris", "closing holes", and "improving scan boundaries".

[0054] S1.4: Occlusal Plane Design: This is set manually by right-clicking the mouse to define the occlusal plane. This plane is an imaginary plane, formed by the mesiocaudal angle of the maxillary central incisor to the mesiobuccal cusp of both first molars. It essentially bisects the interocclusal distance. Specifically, as shown... Figure 4 As shown.

[0055] S1.5: Mandibular and Maxillary Mandibular Reshaping: Using the carving toolkit, set the parameters for the wax knife and repair undercuts and wedge-shaped defects in the dentition. After reshaping, click Next to "Observe and Fill Undercuts". Manually fill undercuts according to the placement path of the designed part to ensure that the printed molar blocking occlusal splint is easy to remove and put on while ensuring sufficient retention.

[0056] S1.6: Occlusal Design: Click the "Virtual Occlusal" button on the right, select the virtual occlusal articulator, and design the parameters in the pop-up dialog box: Here, the SAM articulator is selected, the anterior tooth opening distance is set to 4mm (incisal guide), the Bennett angle is designed to 7° on both sides, and the condylar inclination on both sides is designed to 35°. Finally, save the design parameters to complete the occlusal design. At this time, the occlusal state between the posterior and anterior teeth presents an inverted triangle, as shown in the image. Figure 5 and Figure 6As shown, when the anterior open bite is 4mm and the second molar open bite is about 1mm, the premolar open gap is about 2-3mm, which is very close to the resting occlusal gap. This occlusal design fully simulates the occlusal state of the patient in the resting occlusal position.

[0057] Occlusal design can also be achieved using another method: Record the distance VD1 from the base of the nose to the base of the chin when the patient's teeth are in the intercuspal position. Then, instruct the patient to slightly open their mouth to the resting occlusal position. Inject fluid silicone occlusal recording material between the premolars and molars on both sides and hold it still until the material hardens. Measure the distance VD2 from the base of the nose to the base of the chin again in the resting occlusal position, ensuring that VD2-VD1 is 2-3 mm. Figure 7 As shown, the oral cavity scan records the bite at this time.

[0058] S2: Based on the maxillary and mandibular structural models and the design requirements of the occlusal pad, the main structure of the occlusal pad is obtained by tracing lines in the maxillary and mandibular structural models. The occlusal surface of the main structure of the occlusal pad is gradually increased until it contacts the opposing teeth in the maxillary and mandibular structural models. The buccal and lingual sides are smoothed to determine the design structure of the occlusal pad. The design requirements of the occlusal pad include the design requirements for the coverage of the occlusal pad on the labial and buccal sides for frictional retention, the design requirements for the occlusal pad to stop at the highest point of the outline on the lingual side, and the design requirements for the thickness of the occlusal surface in the premolar and molar regions. Among them, the coverage of the occlusal pad on the labial and buccal sides for frictional retention is 2mm wide to provide frictional retention; the thickness of the occlusal surface in the premolar and molar regions is 1mm-2mm. The specific structure of the occlusal pad is as follows: Figure 8 As shown. After the patient wears the designed occlusal splint, when the upper and lower jaws are in centric relation (CR), and the bilateral condyles are located at the anterior and superior position of the articular fossa, close to the thinnest and avascular part of the central articular disc, the plane of the occlusal splint forms a stable and balanced occlusal contact with the opposing maxillary tooth, as shown. Figure 9 As shown.

[0059] S3: Draw lines on the upper and lower jaw structure model to obtain the main structure of the two blockers located on the lingual side, each including upper, middle and lower structures; sculpt the main structure of the blockers to obtain the design structure of the blockers.

[0060] Specifically, the lower structure of the occlusal interlock is positioned on the lingual side of the first premolar and the first molar, with its lower edge flush with the lingual edge of the occlusal pad. The anterior and posterior edges extend upwards along the mesial and distal sides of the first premolar, respectively, thickening by approximately 2 mm. This design ensures strength while minimizing the patient's foreign body sensation. Figure 10 and Figure 11 As shown.

[0061] The mesial-distal aspect of the middle structure of the interlocking device should align with the lower structure, with a 2mm thickening transition from buccal-lingual to lingual to prevent fracture; the upper structure should be gradually raised from the first premolar to the lingual side of the first molar until it contacts the maxillary palatal tissue, as shown. Figure 12 As shown. When the patient is in a resting position, the upper end of the interlocking device approaches the palatal mucosa but does not make complete contact; while when the patient is in an occlusal position, the upper end of the interlocking device rests against the palatal mucosa, providing slight stimulation to the patient. After receiving the stimulation, the patient clenches and releases the contact teeth, releasing the occlusal contact and blocking the molars. The upper end of the interlocking device has an oval shape, forming an anatomical anastomosis with the soft tissue structure of the maxillary palate.

[0062] S4: Based on the design structure of the occlusal pad and the two interlockers, an integrated structure of the molar blocking occlusal pad is obtained. A schematic diagram of the main structure design of the molar blocking occlusal pad is shown below. Figure 13 and Figure 14 As shown in the diagram. A schematic diagram illustrating the contact between the blocking structure and the upper jaw is shown below. Figure 15 As shown, the three-dimensional image of the molar blocking occlusal pad is as follows: Figure 16 As shown.

[0063] S5: Based on the complete structure of the molar blocking occlusal pad, and based on the occlusal pad material, a molar blocking occlusal pad is obtained through 3D printing and polishing.

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

[0065] (1) The molar blocking occlusal pad is placed inside the oral cavity, and the printing material used in its production must meet the requirements of human bio-health and safety. (2) The lingual side of the molar blocking occlusal pad is designed with a blocking structure. This structure is small in size and does not significantly interfere with the movement of the tongue in the oral cavity, reducing the patient's foreign body sensation. (3) The end of the blocking device is designed to be oval, which is adapted to the shape of the patient's palate, so as to achieve close contact while reducing stimulation to the patient.

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

[0067] (1) Using digital technology, a method for designing a molar blocking occlusal splint was explored, and a digital model of the molar blocking occlusal splint was established to facilitate technology promotion. (2) Using 3D printing technology, the molar blocking occlusal splint can be manufactured, promoting practical application. (3) The molar blocking occlusal splint can generate real-time stimulation at the moment a molar event is about to occur, causing the upper and lower teeth to separate and release contact, thereby blocking molars from the source and achieving the goal of fundamentally curing the disease. This design differs from previous designs in that it explores a digital path for the diagnosis and treatment of dental diseases, blocking the continuous progression of molar events from the source.

[0068] Bruxism is a common symptom of oral and maxillofacial disorders with a high incidence rate. Due to its complex etiology, there is currently no specific treatment. Prolonged bruxism causes various psychological and physical discomforts for patients. Therefore, researching and developing the bruxism-intercepting occlusal splint proposed in this invention has great potential for improving bruxism activity. The main reasons include the following: First, compared with traditional occlusal splints, the bruxism-intercepting occlusal splint can use self-feedback to separate the upper and lower teeth, relieving bruxism activity at its source; second, with the advancements in 3D printing technology and dental materials, specially designed feedback devices are easier to manufacture; furthermore, the simple and convenient occlusal splint is easier for patients to wear. Although this device is not yet widely available, its safety and effectiveness will give it broad application prospects. Therefore, the bruxism-intercepting device designed based on biofeedback has good application value in improving patients' bruxism activity.

[0069] The above are merely 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 within the protection scope of the present invention.

Claims

1. A method for designing a molar blocking occlusal pad, characterized in that, Includes the following steps: Construct a model of the upper and lower jaw structure, determine the occlusal surfaces, and simulate the occlusal state when the jaw is at rest. Based on the maxillary and mandibular structural models and the design requirements of the occlusal pad, the main structure of the occlusal pad is obtained by tracing lines in the maxillary and mandibular structural models. The occlusal surface of the main structure of the occlusal pad is gradually increased until it contacts the opposing teeth in the maxillary and mandibular structural models. The buccal and lingual sides are smoothed to determine the design structure of the occlusal pad. The design requirements of the occlusal pad include the design requirements for the coverage of the occlusal pad for frictional retention on the labial and buccal sides, the design requirements for the occlusal pad to stop at the highest point of the outline on the lingual side, and the design requirements for the thickness of the occlusal surface in the premolar and molar regions. The main structures of two lingual blockers located on the lingual side are obtained by tracing the upper and lower jaw structural models. Each blocker includes an upper, middle, and lower structure. The main structure of the blocker is sculpted 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 occlusal pad, and the anterior and posterior edges extend upward and thicken along the mesial and distal sides of the first premolar, respectively. The mesial and distal direction of the middle structure of the blocker is aligned with the lower structure, and the buccal and lingual direction is gradually thickened towards the lingual side. 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, thus obtaining the designed structure of the blocker. Based on the design structure of the occlusal pad and the two interlockers, an integrated structure of the molar blocking occlusal pad is obtained.

2. The design method of the molar blocking occlusal pad according to claim 1, characterized in that, The occlusal pad has a 2mm wide coverage on the labial and buccal sides for frictional retention, providing frictional retention; the occlusal surface has a thickness of 1mm-2mm in the premolar and molar regions.

3. The design method for a molar blocking occlusal pad according to claim 1, characterized in that, The thickness of the anterior and posterior edges, which extend upward along the mesial and distal sides of the first premolar respectively, is 2 mm; the thickness of the buccal-lingual transitional thickening is 2 mm.

4. The design method of the molar blocking occlusal pad according to claim 1, characterized in that, Also includes: The upper end structure of the blocking device is oval-shaped, which conforms to the anatomical structure of the soft tissue of the maxilla and palate.

5. The design method of the molar blocking occlusal pad according to claim 1, characterized in that, The construction of the mandibular and maxillary structural models includes the following steps: Three-dimensional image data of the maxillary dentition and palate, mandibular dentition, and occlusal relationship are obtained through oral 3D scanning. Based on the 3D image data, the maxilla and mandible are refined, the occlusal plane is designed, and the maxilla and mandible and occlusal design are modified to construct a maxillary and mandibular structural model based on the maxillary full dentition, mandibular full dentition, and maxillary palate soft tissue.

6. The design method of the molar blocking occlusal pad according to claim 5, characterized in that, The occlusal plane design includes the following steps: The occlusal surface is formed from the mesial incisal angle of the maxillary central incisor to the mesial buccal cusp of the bilateral first molars in the maxillary and mandibular structural model.

7. The design method of the molar blocking occlusal pad according to claim 5, characterized in that, The bite design includes the following steps: A virtual SAM occlusal articulation was constructed in the maxillary and mandibular structural models. The anterior open bite was 4mm, the Bennett angle was designed to be 7° on both sides, and the condylar inclination was designed to be 35° on both sides. The occlusal state design was completed to simulate the occlusal state when the jaw is at rest.

8. A method for preparing a molar blocking occlusal pad, characterized in that, The complete structure of the molar blocking occlusal pad designed according to any one of claims 1-7 is obtained by 3D printing and polishing based on the occlusal pad material.

9. A molar blocking occlusal pad, characterized in that, The design is based on the molar blocking occlusal pad design method according to any one of claims 1-7.

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