Segmented bite block for clear aligners

Abstract

This utility model provides a segmented bite block for invisible orthodontic appliances, the segmented bite block comprising: a bar; a first bite block body and a second bite block body, the first bite block body and the second bite block body being sleeved on the bar, and the first bite block body and / or the second bite block body being adapted to move along the extension direction of the bar to adjust the distance between the two; and a third bite block body, the third bite block body being sleeved on one end of the bar for gingival cushioning in the area without opposing teeth.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a segmented bite block for invisible orthodontic appliances, mainly for patients with skeletal Class II deep overbite and skeletal Class III reverse overbite who require invisible orthodontic treatment for oral and maxillofacial deformities. Background Technology

[0002] The Fourth National Oral Health Epidemiological Survey Report shows that the prevalence of malocclusion is as high as 74% (affecting approximately 1.036 billion people), with Class II / III dentofacial deformities reaching 49.0%. The World Health Organization (WHO) has therefore listed it as one of the three major oral diseases globally. Due to its advantages in aesthetics, comfort, and convenience, invisible orthodontic technology is widely used in orthodontic treatment. Biting gel, as an indispensable auxiliary tool for invisible orthodontics, uses the deformation of silicone material to apply force to the invisible aligners, effectively enhancing the fit between the aligners and teeth. It also avoids the dispersion of orthodontic force caused by gaps between the aligners and teeth, helping to balance orthodontic forces and more effectively promote tooth movement. Furthermore, the continuous biting stimulation provided by biting gel can maintain facial muscle tension, reducing the risk of "braces face."

[0003] For patients with large overbite (Class II) or large underbite (Class III) skeletal deformities, existing bite blocks have significant limitations. Large overbite or underbite results in large horizontal gaps in the anterior region when using clear aligners. Traditional bite blocks, due to their limited length and rigidity design, cannot effectively transmit sufficient pressure to the anterior region, leading to insufficient force on the anterior teeth, poor aligner fit, and affecting the incisor orthodontic outcome. Furthermore, with existing bite blocks, patients need to excessively protrude or retract their mandible to reach the anterior region, easily increasing the burden on the temporomandibular joint. In addition, for extremely severe cases of severe skeletal Class II deep overbite and skeletal Class III underbite, the occlusal patterns of the anterior and posterior teeth differ, and existing universal bite blocks cannot achieve differentiated force application in different zones.

[0004] For example, Chinese patent publication number CN218684756U discloses a bite block for assisting retention of invisible orthodontic appliances, comprising an X-shaped main body. The main body has a first guide groove on its front side and a second guide groove offset from the first guide groove on its back side. Each of the four ends of the main body is detachably connected to a connector, which has an auxiliary bite block structure. The bite block structure disclosed in this patent is complex, with a single bite block length and hardness. For patients with Class II skeletal deformities with large overjet and Class III skeletal deformities with large overjet, this design cannot effectively transmit pressure to the anterior and posterior tooth regions.

[0005] For example, Chinese Patent Publication No. CN115414143A discloses an invisible aligner and its method of use, including an aligner for providing continuous orthodontic force and a bite stick for improving the fit between the aligner and the teeth. The aligner includes a hard layer and a soft layer for contacting the teeth. The surface of the soft layer is uneven. The soft layer and the hard layer are integrally molded, and the bite stick is adapted to fit the aligner. This patented invisible aligner with its integrated bite stick has a single length and a relatively fixed bite stick molding device. This design is only suitable for mild Class II and Class III patients or general orthodontic patients. It cannot adjust the length of the bite stick body as the overbite increases or decreases during treatment. Therefore, it is completely unsuitable for the anterior and posterior tooth regions of patients with significant overbite or underbite in moderate to severe skeletal Class II / III extreme cases.

[0006] For example, Chinese Patent Publication No. CN216257492U discloses a semi-circular bite block for invisible orthodontic treatment, comprising a stick and a handle connected to the bottom of the stick. One side of the stick has a first arc-shaped occlusal groove adapted to the teeth, and a plurality of first protruding particles are spaced apart on the end face of the first arc-shaped occlusal groove. The first arc-shaped occlusal groove in this invention allows the semi-circular invisible orthodontic appliance and the patient's upper teeth to move into the first arc-shaped occlusal groove before the invisible orthodontic appliance is engaged. After engagement on one side, the stick can be directly transferred to the other side for engagement of the other side of the invisible orthodontic appliance. The semi-circular bite block disclosed in this patent lacks differentiation in thickness between anterior and posterior teeth. This design cannot effectively apply force to patients with deep mandibular spee curves and skeletal Class II malocclusions, as well as patients with missing opposing teeth (specifically, those with extreme skeletal Class II or III malocclusions where the posterior dentition lacks opposing teeth on one side). Furthermore, the design has a single length and a relatively fixed bite block body, making it impossible to adjust the bite block's anterior and posterior occlusal portion to match changes in overbite distance as overbite increases or decreases during treatment. Therefore, it is completely unsuitable for adapting to the dynamic changes in the overbite force application area during treatment for severe skeletal Class II / III extreme cases with significant overbite or underbite.

[0007] For example, patent publication number CN222549373U discloses a biting device comprising at least two occlusal portions. These portions are arranged sequentially along the length of the biting device, allowing different tooth areas to correspond to different occlusal portions. The extension direction of the occlusal portions guides the axial orientation of the upper and lower teeth during occlusion. For different types of teeth, such as incisors, lateral incisors, premolars, and molars, the occlusal portion used is changed by moving the body along its axial direction. It should be noted that this patent designs multiple different types of occlusal portions for different types of teeth, such as incisors, lateral incisors, premolars, and molars. However, in practical applications, the size and shape of each type of tooth are not entirely the same for different patients. Therefore, the multiple occlusal portions designed in the aforementioned patent are actually complex, and in practical applications, if they cannot be fully adapted to the different types of tooth shapes of different patients, orthodontic force cannot be effectively applied. Furthermore, this design is only suitable for mild Class II and Class III patients or ordinary orthodontic patients. It cannot adjust the occlusal area of ​​the anterior and posterior teeth to match the changes in overbite distance as the overbite increases or decreases during the orthodontic process. Therefore, it is completely unsuitable for the dynamic changes in the overbite force application area of ​​anterior and posterior teeth in extreme cases of severe skeletal Class II / III patients with large overbite or underbite during the treatment process. Utility Model Content

[0008] In view of this, the present invention provides a segmented bite for invisible orthodontic appliances, the segmented bite comprising:

[0009] Rod body;

[0010] A first chewable body and a second chewable body are sleeved on the rod body, and the first chewable body and / or the second chewable body are adapted to move along the extension direction of the rod body to adjust the distance between them.

[0011] The third chewing rubber body is sleeved on one end of the rod and is used for gingival cushioning in areas without opposing teeth.

[0012] Furthermore, both the first and second chewing gum bodies are provided with interlocking grooves corresponding to the upper and lower teeth.

[0013] Furthermore, the fitting groove is a V-shaped groove or a wedge-shaped groove.

[0014] Furthermore, the first bite-sized body is fixedly connected to one end of the rod, and the second bite-sized body is adapted to move along the extension direction of the rod.

[0015] Furthermore, the rod has a rough surface and / or a plurality of protrusions on the surface to increase the resistance when the first chewing rubber body and / or the second chewing rubber body move along the extension direction of the rod.

[0016] Furthermore, the first chewable body, the second chewable body, and the third chewable body have rough surfaces.

[0017] Furthermore, the third bite body includes a protrusion for corresponding to the gingiva in an area without an opposing tooth.

[0018] Furthermore, the protrusion is composed of a cylindrical structure that is curved in an arc.

[0019] Furthermore, the rod is made of a rigid material.

[0020] Furthermore, the first chewable body, the second chewable body, and the third chewable body are made of elastic material.

[0021] This invention relates to a segmented bite block for clear aligners. It effectively delivers pressure to patients with skeletal Class II overbite and Class III underbite (even exceeding 8mm), and in extreme cases, it can target different areas of the anterior and posterior teeth. Furthermore, it dynamically adjusts the overbite distance to match changes during treatment, meeting the force requirements of the aligners in areas with large overbite or underbite in the anterior or posterior regions. It also meets the force requirements of the bite block in the unilateral distal posterior region of patients with severe skeletal Class II / III posterior teeth lacking opposing teeth. Additionally, it dynamically adjusts the overbite distance to match changes in overbite during treatment, allowing the bite block to adapt to real-time force requirements of the clear aligners as overbite changes. Moreover, this segmented bite block for clear aligners has a simple structure, low manufacturing process and cost, is suitable for mass production, and has significant promotional value and considerable economic benefits.

[0022] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a segmented bite block for invisible orthodontic appliances according to one embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Another structural diagram of the segmented biting toy, in which the distance between the first biting toy body and the second biting toy body is adjusted;

[0025] Figure 3 yes Figure 1 A schematic diagram of a segmented biting adhesive applied to the anterior teeth of a skeletal Class II deep overbite patient;

[0026] Figure 4 yes Figure 1 Another schematic diagram of segmented biting rubber applied to the anterior teeth of patients with skeletal Class II deep overbite;

[0027] Figure 5 yes Figure 1 A schematic diagram of a segmented biting adhesive applied to the posterior teeth of a skeletal Class II deep overbite patient;

[0028] Figure 6 yes Figure 1 A schematic diagram of a segmented biting rubber applied to the posterior region of a skeletal Class II deep overbite patient without opposing teeth;

[0029] Figure 7 yes Figure 1 A schematic diagram of a segmented biting adhesive applied to the anterior teeth of a skeletal Class III overbite patient;

[0030] Figure 8 yes Figure 1 Another schematic diagram of segmented biting rubber applied to the anterior teeth of a skeletal Class III overbite patient;

[0031] Figure 9 yes Figure 1 A schematic diagram of a segmented bite block applied to the posterior teeth of a skeletal Class III overbite patient;

[0032] Figure 10 yes Figure 1 A schematic diagram of a segmented biting rubber applied to the posterior region of a skeletal Class III overbite patient without opposing teeth.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100—First biting toy body,

[0035] 110—fitting groove,

[0036] 200—Second biting toy body,

[0037] 210—fitting groove,

[0038] 300—The third biting toy body,

[0039] 310—Main Body

[0040] 320—Protrusion,

[0041] 400—rod body,

[0042] 410—Convex point. Detailed Implementation

[0043] In the description of the embodiments of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. The accompanying drawings are schematic diagrams or conceptual diagrams, and the relationships between the thickness and width of each part, as well as the proportional relationships between each part, etc., are not entirely consistent with their actual values.

[0044] First, we will explain the relevant terms that appear in this application.

[0045] 1. Dentofacial deformities: These refer to a type of growth and developmental deformity caused by congenital factors, acquired factors, or a combination of both during an individual's craniofacial growth and development. Epidemiological surveys show that more than 40% of the population has malocclusion, of which about 5% are skeletal malocclusions caused by abnormal jawbone development, i.e., dentofacial deformities.

[0046] 2. Skeletal Class II: This is a type of dentofacial deformity, mainly characterized by relative maxillary protrusion and mandibular retrusion, resulting in disharmony in the mesiodistal relationship between the maxilla and mandible. Its core features include: abnormal jaw structure: overdevelopment of the maxilla or underdevelopment of the mandible, leading to distal occlusion; dental features: deep overbite (horizontal distance exceeding 5-7 mm) and deep overjet (vertical distance excessive), often accompanied by open bite and poor occlusal efficiency; facial impact: a convex profile may be observed in profile, affecting aesthetics and chewing function.

[0047] 3. Skeletal Class III: This is an abnormal bite caused by the uncoordinated development of the upper and lower jaws, mainly manifested as excessive mandibular protrusion or maxillary retrusion, resulting in an underbite. Its core characteristics include abnormal jaw structure and occlusal relationship: maxillary retrusion or mandibular protrusion, leading to anterior crossbite (lower anterior teeth covering upper anterior teeth), mesial relationship of molars, and inability of the mandible to retract to the edge-to-edge position of the anterior teeth; facial impact: the profile shows a flat midface or mandibular protrusion, and some patients also have posterior crossbite and a short lower third of the face.

[0048] 4. Deep overbite: This is a type of horizontal malocclusion of the anterior teeth, characterized by a horizontal distance of more than 3mm from the incisal edge of the maxillary anterior teeth to the labial surface of the mandibular anterior teeth. It is classified into three degrees based on the horizontal distance from the incisal edge of the maxillary anterior teeth to the labial surface of the mandibular anterior teeth: Grade I (mild), Grade II (moderate), and Grade III (severe).

[0049] 5. Overbite: This refers to the mandibular anterior or posterior teeth protruding beyond the buccal side of their corresponding maxillary teeth, forming a reverse overbite relationship. It is commonly seen in anterior crossbite (commonly known as "underbite") or posterior crossbite. Based on the horizontal distance the mandibular anterior teeth protrude beyond the labial side of the maxillary anterior teeth, it is divided into three degrees: Grade I: Mild overbite, commonly seen in dental anterior crossbite, relatively easy to correct. Grade II: More pronounced overbite, possibly accompanied by functional mandibular protrusion, requiring early intervention; Grade III: Severe overbite, often related to skeletal deformities, complex to correct and prone to relapse.

[0050] 6. Invisible braces: also known as clear aligners, are a type of digital orthodontic device made of transparent polymer material. They obtain dental data through intraoral scanning or silicone rubber impressions, use 3D modeling software to simulate the tooth movement path, and customize a phased transparent aligner to apply corrective force in stages.

[0051] 7. Invisible Braces Biting Gel: This is an important auxiliary tool in invisible orthodontic treatment, and its correct use is crucial to the orthodontic effect and facial muscle health. The core functions of biting gel include: enhancing fit: applying even force to ensure a tight fit between the braces and teeth, avoiding imbalance of orthodontic force due to gaps; preventing braces face: exercising the masseter and temporalis muscles, reducing facial muscle atrophy caused by decreased chewing function; and optimizing orthodontic efficiency: ensuring precise transmission of the mechanical force of the aligner design, shortening the treatment period.

[0052] Figure 1 and Figure 2 A schematic diagram of a segmented bite block for an invisible orthodontic appliance according to an embodiment of the present invention is shown, including a first bite block body 100, a second bite block body 200, a third bite block body 300, and a bar 400.

[0053] In this embodiment, the main body of the rod 400 is a slender cylindrical structure. In other embodiments, the main body of the rod 400 may also adopt other straight-line extending structures, such as a polygonal prism structure. The rod 400 is made of a rigid material, such as medical-grade plastic. When using the segmented bite block of this embodiment, the rod 400 serves as a handhold for positioning, active force application, and other operations during use.

[0054] The first bite block body 100 is provided with a connecting hole that matches the outer diameter of the rod 400, allowing it to be fitted onto the rod 400. Specifically, the first bite block body 100 is fitted onto one end of the rod 400. The first bite block body 100 is provided with fitting grooves 110. In this embodiment, two fitting grooves 110 are provided on opposite sides of the first bite block body 100. When using the segmented bite block of this embodiment, the maxillary teeth and / or mandibular teeth can be positioned within the two fitting grooves 110 or one of the fitting grooves 110. Preferably, the fitting groove 110 is a V-shaped groove or a wedge-shaped groove, which allows the functional cusps to obtain a greater vertical wrapping force when biting within the fitting groove 110. In other embodiments, the fitting groove 110 is configured as an annular groove circumferentially surrounding the first bite block body 100. The first bite block body 100 is made of an elastic material, preferably food-grade silicone.

[0055] Similar to the first bite block body 100, the second bite block body 200 also has a connecting hole that matches the outer diameter of the rod body 400, allowing it to be fitted onto the rod body 400. The second bite block body 200 is disposed on one side of the first bite block body 100. The second bite block body 200 is provided with fitting grooves 210. In this embodiment, two fitting grooves 210 are provided on opposite sides of the second bite block body 200. When using the segmented bite block of this embodiment, the maxillary teeth and / or mandibular teeth can be positioned within the two fitting grooves 110 or one of the fitting grooves 110. Preferably, the fitting groove 110 is a V-shaped groove or a wedge-shaped groove. Similarly, in other embodiments, the fitting groove 210 is configured as an annular groove circumferentially surrounding the second bite block body 200. The second bite block body 200 is made of an elastic material, preferably food-grade silicone.

[0056] The engagement of the first and second chewable bodies 100 and 200 with the rod 400 allows them to move along the length of the rod 400 under external force. The magnitude of this external force can be adjusted by varying the tightness of the first and second chewable bodies 100 and 200 on the rod 400. In this embodiment, the rod 400 has a rough surface to increase the friction between it and the first and second chewable bodies 100 and 200. Furthermore, evenly distributed protrusions 410 are provided on the surface of the rod 400 to further increase the resistance when the first and second chewable bodies 100 and 200 move along the extension direction of the rod 400. In practical applications, one or more of the following can be selected to adjust the magnitude of the external force that drives the first biting rubber body 100 and the second biting rubber body 200 to move along the length extension direction of the rod 400: the tightness of the first biting rubber body 100 and the second biting rubber body 200 fitted onto the rod 400, the surface roughness of the rod 400, and the setting of protrusions on the surface of the rod 400.

[0057] The purpose of adjusting the position of the first bite block 100 and / or the second bite block 200 on the bar 400 is to enable patients with skeletal Class II deep overjet and skeletal Class III reverse overjet to adjust the distance between the first bite block 100 and the second bite block 200 according to their own degree of deep overjet and reverse overjet. Specifically, it is the distance between the interlocking groove 110 of the first bite block 100 and the interlocking groove 210 of the second bite block 200.

[0058] In other embodiments, a limiting component is provided on one end of the rod 400 near the first bite-sized body 100 to prevent the first bite-sized body 100 from moving away from and detaching from the rod 400. The limiting component is adapted to be fixedly connected to one end of the rod 400. For example, a limiting component with a bolt or nut-like structure has an outer diameter larger than the outer diameter of the rod 400 and is connected to the rod 400 by a thread.

[0059] In other embodiments, the first chewable body 100 is fixedly connected to one end of the rod 400, such as by bonding the first chewable body 100 to the rod 400, or by snapping them together. In this case, the distance between the first chewable body 100 and the second chewable body 200 can be adjusted by adjusting the position of the second chewable body 200 on the rod 400.

[0060] The third bite block body 300 includes a main body 310 and a protrusion 320. The main body 310 is provided with a connecting hole that matches the outer diameter of the bar 400, so that the third bite block body 300 can be fitted onto the bar 400. Specifically, the third bite block body 300 is disposed on the bar 400 at the other end relative to the first bite block body 100. Similar to the material selection of the first bite block body 100 and the second bite block body 200, the third bite block body 300 is also made of an elastic material, preferably food-grade silicone. For patients with skeletal Class II deep overbite and skeletal Class III reverse overbite, the maxillary and mandibular teeth at the distal end of the posterior teeth usually do not have opposing teeth, but correspond to the gingiva. The structure of the third bite block body 300 is suitable for gingival cushioning in areas without opposing teeth. When using the segmented bite block of this embodiment, the main body 310 of the third bite block body 300 corresponds to the teeth in the non-opposing tooth area, and the protrusion 320 corresponds to the gingiva in the non-opposing tooth area. During biting, it is applied to the gingiva in the non-opposing tooth area for cushioning, and the reaction force is transmitted to the main body 310 and acts on the teeth in the non-opposing tooth area. In this embodiment, the contact surface of the main body 310 corresponding to the teeth is set as a plane; the protrusion 320 is composed of an arc-shaped curved cylindrical structure, thereby forming a protrusion structure adapted to the gingival position (at a certain distance from the occlusal surface of the teeth) while avoiding excessive pressure on the periodontal tissue and scratching the mucosa, and providing a better cushioning effect. In this embodiment, the arc angle of the protrusion 320 is 180 degrees, that is, a semi-circular arc is used. In practical applications, the third bite block body 300 of various sizes can be provided to suit patients in different situations.

[0061] In this embodiment, the first bite block body 100, the second bite block body 200, and the third bite block body 300 are configured with rough surfaces to increase the friction with the contact surface of the braces during biting and enhance the anti-slip effect during use. The first bite block body 100, the second bite block body 200, and the third bite block body 300 can be solid or hollow, depending on the elasticity of the materials used.

[0062] Figures 3 to 6 This illustration schematically demonstrates how the segmented bite device of this embodiment is used in a bony Class II deep overdenture patient.

[0063] like Figure 3As shown, for the teeth in the anterior region, the distance between the first bite body 100 and the second bite body 200 is adjusted so that, during occlusion, the maxillary anterior teeth can be positioned in the occlusal groove 210 of the second bite body 200, and the corresponding mandibular anterior teeth can be positioned in the occlusal groove 110 of the first bite body 100. At the same time, the bar 400 acts as a lever, with the occlusal position of the maxillary anterior teeth as the fulcrum. The grip of the bar 400 is raised to balance the lever force, thereby causing the braces at the corresponding maxillary and mandibular anterior teeth to be pressed tightly and fit closely to the teeth. During natural occlusion, the pressure is amplified by the lever force, which can prevent excessive sagittal anterior and posterior displacement of the mandible, thereby reducing the burden on the temporomandibular joint and reducing the risk of complications during orthodontic treatment, especially in the treatment of adult skeletal deformities.

[0064] like Figure 4 As shown, during the orthodontic process, the degree of skeletal Class II deep overbite gradually improved. When using bite toys, the distance between the first bite toy body 100 and the second bite toy body 200 was adjusted accordingly, that is, within the above... Figure 3 Based on the above, the distance between the first bite block 100 and the second bite block 200 is reduced, so that when biting, the maxillary anterior teeth can be positioned in the occlusal groove 210 of the second bite block 200, and the corresponding mandibular anterior teeth can be positioned in the occlusal groove 110 of the first bite block 100.

[0065] like Figure 5 As shown, for the teeth in the posterior region, the distance between the first bite body 100 and the second bite body 200 is adjusted so that during occlusion, the functional cusps of the maxillary posterior teeth can be positioned in the occlusal groove 210 of the second bite body 200, and the corresponding functional cusps of the mandibular posterior teeth can be positioned in the occlusal groove 110 of the first bite body 100. At the same time, the bar 400 acts as a lever, with the occlusal position of the maxillary posterior teeth as the fulcrum. The grip of the bar 400 is raised to balance the lever force, thereby causing the corresponding braces of the maxillary and mandibular posterior teeth to be pressed tightly and fit closely to the teeth. During natural occlusion, the pressure is amplified by the lever force, which can prevent excessive lateral displacement of the mandible and reduce the burden on the temporomandibular joint.

[0066] like Figure 6 As shown, for the unopposing teeth at the end of the mandibular posterior teeth region, the main body 310 of the third biting body 300 is aligned with the unopposing teeth of the mandible, and the protrusion 320 is aligned with the corresponding maxillary gingiva, and occlusion is performed, so that the brace at the unopposing teeth of the mandible can fit tightly with the teeth.

[0067] Figures 7 to 10 This illustration schematically demonstrates how the segmented bite device of this embodiment is used when applied to a skeletal Class III patient with reverse overlock.

[0068] like Figure 7As shown, for the teeth in the anterior region, the distance between the first bite body 100 and the second bite body 200 is adjusted so that when biting, the maxillary anterior teeth can be positioned in the occlusal groove 110 of the first bite body 100, and the corresponding mandibular anterior teeth can be positioned in the occlusal groove 210 of the second bite body 200. At the same time, the bar 400 acts as a lever, the biting position of the mandibular anterior teeth is the fulcrum, and the grip of the bar 400 is pressed down to balance the lever force, so that the corresponding braces of the upper and lower anterior teeth are pressed tightly and can fit closely to the teeth.

[0069] like Figure 8 As shown, during the orthodontic treatment, the degree of skeletal Class III overbite gradually improved. When using bite toys, the distance between the first bite toy body 100 and the second bite toy body 200 was adjusted accordingly, that is, within the above... Figure 7 Based on the above, the distance between the first bite block 100 and the second bite block 200 is reduced, so that when biting, the maxillary anterior teeth can be positioned in the occlusal groove 110 of the first bite block 100, and the corresponding mandibular anterior teeth can be positioned in the occlusal groove 210 of the second bite block 200.

[0070] like Figure 9 As shown, for the teeth in the posterior region, the distance between the first bite body 100 and the second bite body 200 is adjusted so that when biting, the functional cusps of the maxillary posterior teeth can be positioned in the occlusal groove 110 of the first bite body 100, and the corresponding functional cusps of the mandibular posterior teeth can be positioned in the occlusal groove 210 of the second bite body 200. At the same time, the bar 400 acts as a lever, the biting position of the mandibular posterior teeth is the fulcrum, and the grip of the bar 400 is pressed down to balance the lever force, so that the corresponding braces of the maxillary and mandibular posterior teeth are pressed tightly and can fit closely to the teeth.

[0071] like Figure 10 As shown, for the unopposing teeth at the end of the maxillary posterior teeth region, the main body 310 of the third biting body 300 is aligned with the unopposing teeth of the maxilla, and the protrusion 320 is aligned with the corresponding mandibular gingiva, and occlusion is performed, so that the brace at the unopposing teeth of the maxilla can fit tightly with the teeth.

[0072] For mild cases with a deep overbite / underbite distance ≤5mm, the upper and lower teeth can be occluded using only the first bite body 100 or the second bite body 200. During occlusion, the upper and lower teeth can be positioned in the occlusal slots on both sides of the first bite body 100 or the second bite body 200, respectively.

[0073] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A segmented bite block for use in clear aligners, characterized in that, include: Rod body; A first chewable body and a second chewable body are sleeved on the rod body, and the first chewable body and / or the second chewable body are adapted to move along the extension direction of the rod body to adjust the distance between them. The third chewing rubber body is sleeved on one end of the rod and is used for gingival cushioning in areas without opposing teeth.

2. The segmented bite block for invisible orthodontic appliances as described in claim 1, characterized in that, Both the first and second chewing gum bodies are provided with interlocking grooves corresponding to the upper and lower teeth.

3. The segmented bite block for invisible orthodontic appliances as described in claim 2, characterized in that, The fitting groove is a V-shaped groove or a wedge-shaped groove.

4. The segmented bite block for invisible orthodontic appliances as described in claim 1, characterized in that, The first bite-sized body is fixedly connected to one end of the rod, and the second bite-sized body is adapted to move along the extension direction of the rod.

5. The segmented bite block for invisible orthodontic appliances as described in claim 1, characterized in that, The rod has a rough surface and / or a plurality of protrusions on the surface to increase the resistance when the first chewing rubber body and / or the second chewing rubber body move along the extension direction of the rod.

6. The segmented bite block for invisible orthodontic appliances as described in claim 1, characterized in that, The first chewable body, the second chewable body, and the third chewable body have rough surfaces.

7. The segmented bite block for invisible orthodontic appliances as described in claim 1, characterized in that, The third bite body includes a protrusion that corresponds to the gingiva in an area without an opposing tooth.

8. The segmented bite block for invisible orthodontic appliances as described in claim 7, characterized in that, The protrusion is composed of a cylindrical structure that is curved in an arc.

9. The segmented bite block for invisible orthodontic appliances as described in claim 1, characterized in that, The rod is made of a rigid material.

10. The segmented bite block for invisible orthodontic appliances as described in claim 1, characterized in that, The first chewable body, the second chewable body, and the third chewable body are made of elastic material.

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