Dental instrument and dental orthodontic correction system

Abstract

The utility model provides a dental instrument and a dental orthodontic correction system, the dental instrument comprises an appliance with an inner cavity for accommodating teeth, the appliance is provided with a rear tooth section, and the occlusal surface of the rear tooth section is provided with an occlusal block mounting area; the occlusion block mounting area is provided with a through hole; the dental instrument further comprises a position adjusting occlusion block arranged in the through hole in a penetrating mode, the position adjusting occlusion block comprises a first supporting part and a second supporting part, the first supporting part is used for making contact with the occlusion face of a dentition worn by the appliance, the second supporting part is used for making contact with the occlusion face of a jaw, and the first supporting part is connected with the second supporting part. According to the orthodontic appliance, the occlusal force between the upper jaw and the lower jaw is completely borne by the position adjusting occlusal block and is not influenced by the strength of the orthodontic appliance, the stability of supporting the upper jaw and the lower jaw by the position adjusting occlusal block can be improved, the upper jaw and the lower jaw can be stably kept in a preset open occlusal state, and the malocclusion orthodontic effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of orthodontic technology, and in particular to a dental instrument and a dental orthodontic treatment system having the dental instrument. Background Technology

[0002] In recent years, due to their advantages such as aesthetics, convenience, and ease of cleaning, shell-shaped dental appliances based on polymer materials (such as invisible aligners) have become increasingly popular in the field of orthodontics. In invisible orthodontics, jaw alignment is a crucial treatment step because it not only involves the alignment of teeth but is also closely related to occlusal function and facial aesthetics. Many orthodontic cases involve patients with malocclusions such as deep overbite, reverse overbite (underbite), and open bite. Jaw alignment can restore the normal vertical and sagittal relationship between the upper and lower jaws, ensuring proper contact between them, thereby improving chewing efficiency and reducing the risk of temporomandibular joint disorders.

[0003] Currently, the common practice for clear aligners is to create a cavitary structure that protrudes towards the opposing dentition during the heat-pressing process, serving as a jaw alignment adjustment structure. This cavitary structure bears significant occlusal forces and is prone to deformation or even cracking, affecting the orthodontic outcome. To prevent deformation or cracking of the cavitary structure, existing techniques typically involve filling it with a filling material to enhance its strength. However, this requires repeated visits, which is cumbersome and time-consuming. Furthermore, the filled material does not provide stable occlusal contact with the corresponding dentition, making it difficult to achieve ideal and stable jaw alignment reconstruction results. Utility Model Content

[0004] The purpose of this invention is to provide a dental instrument and a dental orthodontic treatment system having the dental instrument.

[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a dental instrument, comprising an orthodontic appliance having an inner cavity for accommodating teeth, the orthodontic appliance having a posterior tooth segment, the occlusal surface of the posterior tooth segment having an occlusal block mounting area; the occlusal block mounting area having a through hole; the dental instrument further comprising an adjusting occlusal block passing through the through hole, the adjusting occlusal block comprising a first support portion for contacting the occlusal surface of the dentition on which the orthodontic appliance is worn, and a second support portion for contacting the occlusal surface of the opposing occlusion, the first support portion being connected to the second support portion.

[0006] As a further improvement of the present invention, the occlusal surface of the posterior tooth segment is provided with an occlusal block mounting part protruding towards the opposing direction. The occlusal block mounting part has a mounting cavity communicating with the inner cavity. The side of the occlusal block mounting part facing the opposing jaw is the occlusal block mounting area. The size of the through hole is smaller than the size of the occlusal block mounting area.

[0007] The mounting cavity is used to accommodate the first support portion, the size of the first support portion being adapted to the mounting cavity, or the cross-sectional size of the first support portion being larger than the size of the through hole;

[0008] The cross-sectional dimensions of the second support portion are adapted to the dimensions of the through hole.

[0009] As a further improvement of this utility model, the distance between the edge of the through hole and the edge of the bite block mounting area is not less than 0.5mm.

[0010] As a further improvement of this utility model, the protrusion height of the biting block mounting part is 0.5mm to 5mm.

[0011] As a further improvement of this utility model, the sagittal length of the bite block mounting portion is greater than the buccal-lingual length.

[0012] As a further improvement of the present invention, the bite block mounting area has at least two through holes spaced apart along the sagittal direction; the adjusting bite block has a second support portion corresponding to at least one of the through holes.

[0013] As a further improvement of the present invention, the adjusting engagement block has at least two second support portions, and the second support portions correspond one-to-one with the through holes.

[0014] As a further improvement of this utility model, the distance between two adjacent through holes is not less than 0.5mm.

[0015] As a further improvement of this utility model, the biting block mounting area and the first support part are in planar fit.

[0016] As a further improvement of this utility model, the cross-section of the second support part is square or circular.

[0017] As a further improvement of this utility model, the length of the minor axis in the cross-section of the second support part is not less than 1 mm.

[0018] As a further improvement of this utility model, the ratio of the minor axis length in the cross-section of the second support part to the height of the second support part is 0.5 to 2.

[0019] As a further improvement of this utility model, the side of the first support near the dentition where the orthodontic appliance is worn is configured to match the maxillofacial morphology of the corresponding dentition.

[0020] As a further improvement of the present invention, the side of the second support portion facing the opposing jaw is configured to match the facial morphology of the corresponding opposing dentition portion.

[0021] As a further improvement of the present invention, the posterior tooth segment includes a plurality of posterior tooth crowns connected in sequence, the first support portion corresponding to at least two of the posterior tooth crowns; and / or, the second support portion corresponding to at least two opposing teeth.

[0022] As a further improvement of the present invention, the dental instrument further includes a retention attachment for attaching to the buccal and / or lingual side of the dentition on which the orthodontic appliance is worn, and the orthodontic appliance has a retention cavity for accommodating the retention attachment.

[0023] To achieve the above-mentioned utility model objectives, this utility model also provides a dental orthodontic treatment system, which includes the aforementioned dental instruments. The dental orthodontic treatment system includes N of the aforementioned appliances and M of the aforementioned adjusting occlusal blocks, where N≥M, N≥2, and N is an integer; M≥1, and M is an integer; as the treatment progresses, the height of the adjusting occlusal blocks gradually decreases.

[0024] The beneficial effects of this utility model are as follows: The dental instrument of this utility model, by setting a through hole in the occlusal block installation area and simultaneously setting an adjusting occlusal block through the through hole, with the lower end of the adjusting occlusal block cooperating with the occlusal surface of the mandibular dentition and the upper end of the adjusting occlusal block cooperating with the occlusal surface of the maxillary dentition, allows the occlusal force between the upper and lower jaws to be completely borne by the adjusting occlusal block, unaffected by the strength of the orthodontic appliance itself. This improves the stability of the adjusting occlusal block in supporting the upper and lower jaws, enabling the upper and lower jaws to be stably maintained in the predetermined open occlusal state, thereby improving the malocclusion correction effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the partial structure of the dental instrument in this utility model, in which the adjusting occlusal block cooperates with the orthodontic appliance;

[0026] Figure 2 yes Figure 1 A partial structural diagram of the orthodontic appliance in the diagram;

[0027] Figure 3 yes Figure 1 A schematic diagram of the structure of the shifting bite block in the middle;

[0028] Figure 4 This is a schematic diagram of a dental instrument worn behind the teeth in a specific embodiment of the present invention. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. Please refer to the accompanying drawings for further details. Figures 1 to 4 The figures shown represent preferred embodiments of the present invention. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent modifications or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0030] The terms "first," "second," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "contact," etc., should be interpreted broadly. For example, a connection can be a direct connection or an indirect connection through an intermediate medium; it can be a fixed connection, a movable connection, a detachable connection, or an integral connection; contact can be direct contact or indirect contact through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Please refer to Figures 1-4 As shown, this utility model provides a dental instrument 10, which includes an orthodontic appliance 1 having an inner cavity for accommodating teeth. In one specific embodiment, the orthodontic appliance 1 is in the shape of an arch adapted to the corresponding dentition 20, and can be worn on one side of the dentition 20. The orthodontic appliance 1 includes an integrally formed anterior segment and two posterior segments located at both ends of the anterior segment. Of course, this is not a limitation; in other embodiments, the orthodontic appliance 1 may also be configured to have posterior segments, but only cover a portion of the teeth on one side of the dentition 20.

[0032] The occlusal surface of the posterior teeth has an occlusal block mounting area 11, and the occlusal block mounting area 11 has a through hole 111. The dental instrument 10 also includes an adjusting occlusal block 2 inserted into the through hole 111. The adjusting occlusal block 2 includes a first support portion 21 for contacting the occlusal surface of the dentition 20 on which the orthodontic appliance 1 is worn, and a second support portion 22 for contacting the occlusal surface of the opposing occiput. The first support portion 21 and the second support portion 22 are connected. After the orthodontic appliance 1 with the adjusting occlusal block 2 is worn on the corresponding dentition 20 and engaged, the first support 21 abuts against the occlusal surface of the corresponding dentition portion in the dentition 20 on which the orthodontic appliance 1 is worn, and the second support 22 abuts against the occlusal surface of the corresponding dentition portion of the opposing dentition. That is, the lower end of the adjusting occlusal block 2 engages with the occlusal surface of the mandibular dentition, and the upper end of the adjusting occlusal block 2 engages with the occlusal surface of the maxillary dentition, so as to open the bite of the upper and lower teeth, so that the upper and lower jaws are in an open bite state. At the same time, the biting force between the upper and lower jaws is entirely borne by the adjusting occlusal block 2, and is not affected by the strength of the orthodontic appliance 1 itself. This can improve the stability of the supporting effect of the adjusting occlusal block 2 on the upper and lower jaws, so that the upper and lower jaws can be stably maintained in the predetermined open bite state, thereby improving the malocclusion correction effect.

[0033] Specifically, the dental instrument 10 may include one or two orthodontic appliances 1. When the dental instrument 10 includes only one orthodontic appliance 1, the orthodontic appliance 1 may be an upper orthodontic appliance worn on the maxillary dentition or a lower orthodontic appliance worn on the mandibular dentition. In this case, after the orthodontic appliance 1 is worn on the corresponding dentition 20, the second support portion 22 abuts against the occlusal surface of the corresponding dentition portion of the opposing dentition. When the dental instrument 10 includes two orthodontic appliances, that is, when it includes a set of maxillary and mandibular appliances, the adjusting occlusal block 2 may be installed on either the maxillary or mandibular appliance. In this case, after both the maxillary and mandibular appliances are worn on the corresponding dentition and occluded, the second support portion 22 abuts against the occlusal surface of the corresponding dentition portion of the opposing appliance. That is, the second support portion 22 indirectly contacts the occlusal surface of the opposing dentition through the opposing appliance. In this embodiment, the orthodontic appliance 1 worn on the lower teeth 20 with the aforementioned adjusting occlusal block 2 is used as an example for specific explanation. In actual practice, the design and selection can be made according to the patient's actual condition or the needs of the orthodontic appliance 1.

[0034] It should be noted that the adjusting occlusal block 2 is not limited to being located in the posterior tooth segment; in specific patient cases, it can also be located in the anterior tooth segment according to specific needs. Furthermore, the corresponding dentition portion in this text specifically refers to the portion of the dentition covered by the adjusting occlusal block 2 after the orthodontic appliance 1 with the adjusting occlusal block 2 is worn on the corresponding dentition 20 and engaged. The dentition portion corresponding to the first support portion 21 refers to the portion of the dentition 20 covered by the first support portion 21 within the dentition 20 worn with the orthodontic appliance 1 equipped with the adjusting occlusal block 2; the dentition portion corresponding to the second support portion 22 refers to the portion of the opposing dentition covered by the second support portion 22. Figure 4 As shown, when the occlusal adjustment block 2 is set on the orthodontic appliance 1 worn on the mandibular dentition 20, the corresponding dentition portion of the first support 21 refers to the portion of the mandibular dentition 20 covered by the first support 21, and the corresponding dentition portion of the second support 22 refers to the portion of the maxillary dentition covered by the second support 22. For example, when the sagittal length of the first support 21 is two tooth lengths, the corresponding dentition portion of the first support 21 refers to the two teeth covered by the first support 21.

[0035] In some optional embodiments, the side of the first support portion 21 near the dentition 20 on which the orthodontic appliance 1 is worn is configured to match the occlusal surface morphology of the corresponding dentition portion, and the side of the second support portion 22 facing the opposing dentition is configured to match the occlusal surface morphology of the corresponding opposing dentition portion. Thus, after the orthodontic appliance 1 with the adjusting occlusal block 2 is worn on the corresponding dentition 20 and engaged, the adjusting occlusal block 2 can form a stable occlusal contact with the upper and lower dentitions, achieving an ideal and stable jaw position reconstruction result, and avoiding the problem of temporomandibular joint disorder induced by occlusal instability.

[0036] Specifically, the first support portion 21 and the second support portion 22 in the positioning and engaging block 2 can be configured as an integral structure or as a separate structure. When the first support portion 21 and the second support portion 22 are separate structures, they can be connected by means of adhesive bonding, laser welding, riveting, etc.

[0037] Specifically, the first support portion 21 and the second support portion 22 can be made of either a hard or a soft material. When the first support portion 21 and / or the second support portion 22 are made of a hard material, the first support portion 21 / second support portion 22 can be configured to match the occlusal surface shape of the corresponding dentition portion during 3D printing or molding of the adjusting bite block 2; alternatively, the first support portion 21 / second support portion 22 can be polished to match the occlusal surface shape of the corresponding dentition portion. When the first support portion 21 and / or the second support portion 22 are made of a soft material, when the adjusting bite block 2 is subjected to biting force, the soft first support portion 21 will automatically match the occlusal surface shape of the corresponding dentition portion, and the soft second support portion 22 will automatically match the occlusal surface shape of the corresponding dentition portion, providing a certain buffering effect during the upper and lower jaw biting process, making biting more comfortable.

[0038] It is known that when the first support part 21 and the second support part 22 are both made of rigid material or both are made of soft material, the first support part 21 and the second support part 22 can be configured as an integral structure.

[0039] Specifically, the aforementioned rigid materials include, but are not limited to, composite resins, PEE, HDPE, PTFE, TPU, PETG, PPSU, POM, PA, ABS, PVC, PU, ​​PEKK, PSU, PC, PMMA, PEBA, rigid silicone rubber, ceramics, and zirconium oxide. The soft materials are those with an elastic modulus between 5 and 2000 MPa and / or a hardness between 20A and 90A, such as soft silicone rubber and other polymer materials.

[0040] In a preferred embodiment, the soft material is selected from soft materials with an elastic modulus between 5 and 200 MPa, such as soft materials with an elastic modulus of 5 MPa, 10 MPa, 50 MPa, 100 MPa, and 200 MPa, and will not be listed exhaustively here.

[0041] In one specific embodiment, the posterior tooth segment includes a plurality of sequentially connected posterior crowns, with the first support portion 21 corresponding to at least two of the posterior crowns; and / or, the second support portion 22 corresponding to at least two opposing teeth. This avoids concentrated force on some teeth, which could cause indentation.

[0042] The first support portion 21 described above corresponds to at least two of the posterior braces. Therefore, when the orthodontic appliance 1 with the adjusting occlusal block 2 is worn on the corresponding dentition 20 and in occlusion, the first support portion 21 contacts at least two teeth of the dentition 20 wearing the appliance 1. This contact can be either the occlusal surfaces of the at least two teeth being completely covered by the first support portion 21, or at least one of the at least two teeth being partially covered by the first support portion 21. Similarly, the second support portion 22 described above corresponds to at least two opposing teeth. Specifically, when the orthodontic appliance 1 with the adjusting occlusal block 2 is worn on the corresponding dentition and in occlusion, the second support portion 22 contacts at least two teeth of the opposing dentition. This contact can be either the occlusal surfaces of the at least two teeth being completely covered by the second support portion 22, or at least one of the at least two teeth being partially covered by the second support portion 22.

[0043] Specifically, when the adjusting occlusal block 2 includes multiple second support portions 22, the aforementioned second support portion 22 corresponding to at least two opposing teeth specifically means that all the second support portions 22 included in the adjusting occlusal block 2 correspond to at least two opposing teeth. For example, when the adjusting occlusal block 2 includes two second support portions 22, the aforementioned second support portion 22 corresponding to at least two opposing teeth specifically means that both second support portions 22 correspond to at least two opposing teeth.

[0044] In one specific embodiment, the occlusal surface of the posterior tooth segment is provided with an occlusal block mounting portion 12 protruding towards the opposing jaw. The occlusal block mounting portion 12 has a mounting cavity communicating with the inner cavity. The side of the occlusal block mounting portion 12 facing the opposing jaw is the occlusal block mounting area 11. The mounting cavity is used to accommodate the first support portion 21. The size of the through hole 111 is smaller than the size of the occlusal block mounting area 11. The cross-sectional size of the first support portion 21 is larger than the size of the through hole 111. The cross-sectional size of the second support portion 22 is adapted to the size of the through hole 111. In use, the adjusting occlusal block 2 is inserted into the through hole 111 from the inner cavity towards the opposing jaw, so that the second support portion 22 protrudes through the through hole 111 to the outside of the orthodontic appliance 1 and protrudes towards the opposing jaw. The first support portion 21 is located in the mounting cavity, making installation simple. Furthermore, the cross-sectional dimension of the first support portion 21 is larger than the dimension of the through hole 111. After the orthodontic appliance 1 with the adjusting occlusal block 2 is worn on the corresponding dentition 20, one side of the first support portion 21 abuts against the corresponding dentition 20, and the other side abuts against the side of the occlusal block mounting area 11 facing the mounting cavity. This can prevent the adjusting occlusal block 2 from falling out, improving the stability and safety of the dental instrument 10. Of course, this is not a limitation. In other embodiments, the adjusting occlusal block 2 can also be configured to be inserted into the through hole 111 from the outside of the orthodontic appliance 1 towards the inner cavity, or the first support portion 21 and the second support portion 22 can be two detachably connected parts connected to each other through the through hole 111.

[0045] In one specific embodiment, the size of the first support portion 21 is adapted to the mounting cavity, that is, the volume of the first support portion 21 is the same as the inner circumferential volume of the mounting cavity, which refers to the volume of the inner circumference of the mounting cavity. Thus, the first support portion 21 can be perfectly fitted into the mounting cavity, which can improve the strength of the interlocking block mounting portion 12 and avoid deformation or cracks during actual use.

[0046] Specifically, the bite block mounting area 11 and the first support part 21 are in planar fit, that is, the side of the bite block mounting area 11 facing the mounting cavity is a plane, and the side of the first support part 21 facing the second support part 22 is a plane, which can improve the stability of the fit between the adjusting bite block 2 and the bite block mounting area 11.

[0047] In some optional embodiments, the edge of the through hole 111 is at least 0.5 mm away from the edge of the occlusal block mounting area 11, thereby preventing the adjusting occlusal block 2 from falling out of the mounting cavity and improving the connection stability between the adjusting occlusal block 2 and the orthodontic appliance 1.

[0048] In some optional embodiments, the protrusion height of the bite block mounting portion 12 is 0.5mm to 5mm, so that the first support portion 21 can be received in the mounting cavity.

[0049] In one specific embodiment, the protrusion height of the bite block mounting part 12 is 1mm to 3mm, but it is not limited to this.

[0050] In some optional embodiments, the sagittal length of the occlusal block mounting part 12 is greater than the buccal-lingual length, so the sagittal length of the corresponding adjusting occlusal block 2 can be set to be greater than the buccal-lingual length, thereby increasing the effective area of ​​the adjusting occlusal block 2 and avoiding concentrated force on some teeth causing indentation.

[0051] Specifically, the occlusal block mounting area 11 has at least two through holes 111 spaced apart along the sagittal direction; the adjusting occlusal block 2 has a second support portion 22 corresponding to at least one of the through holes 111. Adjacent through holes 111 are not connected, and a blocking portion is formed between adjacent through holes 111 to prevent the first support portion 21 from dislodging from the mounting cavity along the occlusal direction, further improving the connection stability between the adjusting occlusal block 2 and the orthodontic appliance 1.

[0052] In one specific embodiment, the adjusting occlusal block 2 has at least two second support portions 22, each corresponding to a through hole 111. The first support portion 21 between two adjacent second support portions 22 is blocked by a blocking portion between the corresponding two through holes 111, thereby preventing the first support portion 21 from dislodging from the mounting cavity along the occlusal direction, and further improving the connection stability between the adjusting occlusal block 2 and the orthodontic appliance 1.

[0053] Specifically, the distance between two adjacent through holes 111 is not less than 0.5mm, which increases the strength of the blocking part between two adjacent through holes 111 and can prevent the blocking part from breaking when the adjusting biting block 2 is installed or removed.

[0054] In some optional embodiments, the cross-section of the second support 22 is square or circular, which can increase the contact area between the second support 22 and the opposing occlusal surface and improve the support stability of the adjusting occlusal block 2.

[0055] It should be noted that the aforementioned square and circle are not limited to standard squares and circles; that is, the cross-sectional outline of the second support part 22 is square or circular.

[0056] In one specific embodiment, the short axis length in the cross-section of the second support portion 22 is not less than 1 mm, thereby improving the strength of the second support portion 22 and preventing the second support portion 22 from bending or breaking when subjected to forces such as meshing.

[0057] In one specific embodiment, the ratio of the minor axis length in the cross-section of the second support portion 22 to the height of the second support portion 22 is 0.5 to 2, which improves the strength of the second support portion 22 and prevents the second support portion 22 from bending or breaking when subjected to forces such as meshing.

[0058] Specifically, the minor axis length in the cross-section of the second support portion 22 refers to the shortest length of the line connecting the two opposite endpoints in the cross-section of the second support portion 22.

[0059] In some optional embodiments, the dental instrument 10 further includes a retention attachment 3 for attaching to the buccal and / or lingual side of the dentition 20 on which the orthodontic appliance 1 is worn. The orthodontic appliance 1 has a retention cavity for accommodating the retention attachment 3, and the retention cavity communicates with the inner cavity. After the orthodontic appliance 1 is worn on the corresponding dentition 20, the retention attachment 3 is positioned within the retention cavity, which can prevent the orthodontic appliance 1 from detaching from the dentition 20 and improve the stability of the orthodontic appliance 1.

[0060] This utility model also provides a dental orthodontic treatment system, which includes the dental instrument 10 described above. Specifically, the dental orthodontic treatment system includes N orthodontic appliances 1 with the adjusting occlusal blocks 2, including N orthodontic appliances 1 and M adjusting occlusal blocks 2, where N ≥ M, N ≥ 2, and N is an integer; M ≥ 1, and M is an integer. That is, one adjusting occlusal block 2 can be used in multiple orthodontic steps.

[0061] As the orthodontic process progresses, the height of the adjustment block 2 gradually decreases. Specifically, the height of the adjustment block 2 can be reduced by grinding to allow for reuse, or the adjustment block 2 can be directly replaced.

[0062] Compared with the prior art, the dental instrument 10 of this utility model, by providing a through hole 111 in the occlusal block installation area 11 and simultaneously providing an adjusting occlusal block 2 passing through the through hole 111, with the lower end of the adjusting occlusal block 2 cooperating with the occlusal surface of the mandibular dentition and the upper end of the adjusting occlusal block 2 cooperating with the occlusal surface of the maxillary dentition, allows the occlusal force between the upper and lower jaws to be completely borne by the adjusting occlusal block 2, unaffected by the strength of the orthodontic appliance 1 itself. This improves the stability of the adjusting occlusal block 2 in supporting the upper and lower jaws, enabling the upper and lower jaws to be stably maintained in the predetermined open occlusal state, thereby improving the malocclusion correction effect.

[0063] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0064] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A dental instrument comprising an appliance having an inner cavity for receiving teeth, the appliance having a posterior segment, the occlusal surface of the posterior segment having an occlusal block mounting area; characterized in that: The occlusal block mounting area has a through hole; the dental instrument further includes an adjusting occlusal block inserted into the through hole, the adjusting occlusal block including a first support portion for contacting the occlusal surface of the dentition on which the orthodontic appliance is worn, and a second support portion for contacting the occlusal surface of the opposing occiput, the first support portion being connected to the second support portion.

2. The dental instrument as described in claim 1, characterized in that: The occlusal surface of the posterior tooth segment has a protruding occlusal block mounting part facing the opposing jaw. The occlusal block mounting part has a mounting cavity communicating with the inner cavity. The side of the occlusal block mounting part facing the opposing jaw is the occlusal block mounting area. The size of the through hole is smaller than the size of the occlusal block mounting area. The mounting cavity is used to accommodate the first support portion, the size of the first support portion being adapted to the mounting cavity, or the cross-sectional size of the first support portion being larger than the size of the through hole; The cross-sectional dimensions of the second support portion are adapted to the dimensions of the through hole.

3. The dental instrument as described in claim 1 or 2, characterized in that: The distance between the edge of the through hole and the edge of the bite block mounting area is not less than 0.5 mm.

4. The dental instrument as described in claim 2, characterized in that: The protrusion height of the bite block mounting part is 0.5mm to 5mm.

5. The dental instrument as described in claim 2, characterized in that: The sagittal length of the bite block mounting portion is greater than the buccal-lingual length.

6. The dental instrument as described in claim 2, characterized in that: The bite block mounting area has at least two through holes spaced apart along the sagittal direction; the adjusting bite block has a second support portion corresponding to at least one of the through holes.

7. The dental instrument as claimed in claim 6, characterized in that: The adjusting engagement block has at least two second support portions, and the second support portions correspond one-to-one with the through holes.

8. The dental instrument as claimed in claim 6, characterized in that: The distance between two adjacent through holes shall not be less than 0.5 mm.

9. The dental instrument as claimed in claim 2, characterized in that: The interlocking block mounting area and the first support part are in planar fit.

10. The dental instrument as claimed in claim 2, characterized in that: The cross-section of the second support part is square or circular.

11. The dental instrument as claimed in claim 2, characterized in that: The length of the minor axis in the cross-section of the second support is not less than 1 mm.

12. The dental instrument as claimed in claim 2, characterized in that: The ratio of the minor axis length in the cross-section of the second support portion to the height of the second support portion is 0.5 to 2.

13. The dental instrument as claimed in claim 1, characterized in that: The side of the first support near the dentition where the orthodontic appliance is worn is configured to match the maxillofacial morphology of the corresponding dentition portion.

14. The dental instrument as claimed in claim 1, characterized in that: The second support portion is configured to match the occlusal morphology of the corresponding opposing dentition portion on the side facing the opposite jaw.

15. The dental instrument as claimed in claim 1, characterized in that: The posterior segment includes a plurality of posterior crowns connected in sequence, the first support portion corresponding to at least two of the posterior crowns; and / or, the second support portion corresponding to at least two opposing teeth.

16. The dental instrument as claimed in claim 1, characterized in that: The dental instrument further includes a retention attachment for attaching to the buccal and / or lingual side of the dentition on which the appliance is worn, the appliance having a retention cavity for accommodating the retention attachment.

17. A dental orthodontic treatment system, characterized in that: The dental orthodontic treatment system includes dental instruments as described in any one of claims 1 to 16, the dental orthodontic treatment system includes N of the orthodontic appliances and M of the adjusting occlusal blocks, N≥M, N≥2, and N is an integer; M≥1, and M is an integer; as the treatment progresses, the height of the adjusting occlusal blocks gradually decreases.

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