Dental instrument and dental system

Abstract

The embodiment of the utility model provides a dental instrument and a dental system.The dental instrument comprises a bearing part making contact with at least part of teeth, the lingual side edge of the bearing part extends in the gingival direction to form an inner side wall located on the lingual side of a dental arch, and the lip-cheek side edge of the bearing part extends in the gingival direction to form an outer side wall. The outer side wall is in contact with labial and buccal muscles; an upper groove for limiting an upper dental arch and a lower groove for limiting a lower dental arch are defined by the outer side wall, the bearing part and the inner side wall; at least part of the inner side wall extends towards the tongue side from the position close to the lower groove to the lower edge of the tail end to form a bearing part, and the bearing part is provided with a tongue adjusting part with the tip facing the tongue body and used for correcting the position of the tongue body. In the wearing process, when the tongue body of a patient is located at an incorrect position, the tongue body makes contact with the tip end of the tongue adjusting part to feel slight pain and discomfort so as to prompt the patient to adjust the current tongue body position, and therefore the effects of passively correcting the tongue body position and training tongue muscles are achieved, and the better correction effect is achieved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of oral orthodontics, and in particular to a dental instrument and a dental system. Background Art

[0002] Regarding early malocclusion in children's growth and development stage, studies have shown that muscles have a key impact on the stability of oral orthodontic treatment during the development stage, and in some cases muscle problems are the cause of oral problems. Ignoring muscle problems may make corrections difficult or relapse after treatment.

[0003] Orofacial myofunctional therapy (OMT) is a multidisciplinary comprehensive treatment method for evaluating, diagnosing, preventing and treating patients in the growth and development stage who have abnormalities in the oral and maxillofacial muscles and their functions. Its mechanism is to promote the normal development of the craniofacial structure and the coordinated and stable function of the oral and maxillofacial system by re-education of the nerves and muscles of the oral and maxillofacial region. It is a treatment method that focuses on the cause of the disease. Silicone braces are usually used in the existing technology. Such braces can eliminate muscle dysfunction and correct bite problems, dentition problems, tongue problems, mouth breathing problems, etc.

[0004] At present, the existing silicone braces are used to treat the problem of abnormal tongue position by providing a tongue guiding structure on the inner side of the dentition receiving groove on the silicone braces, such as the tongue flap structure disclosed in a Chinese patent with patent number 200880103923.2. The principle of correction is that the user correctly positions the user's tongue by pressing the tip of the tongue against the corresponding position of the tongue flap. This correction process has the nature of an automatic indicator for the user. However, the users of silicone braces are usually children who lack the ability to train themselves. In other words, this active brace cannot achieve the effect of correcting the tongue position and training the tongue muscles. Therefore, how to design a brace with better clinical treatment effect on tongue problems is an urgent problem to be solved. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a dental instrument and a dental system that can correct the tongue position through passive treatment on the basis of eliminating muscle dysfunction, and can solve the problem that the existing technology cannot achieve good treatment of tongue problems using silicone orthodontic appliances.

[0006] To achieve the above-mentioned purpose, an embodiment of the present application provides a dental device, which includes a bearing portion that contacts at least part of the teeth, the lingual edge of the bearing portion extends toward the gums to form an inner wall located on the lingual side of the dental arch, and the labial and buccal edges of the bearing portion extend toward the gums to form an outer wall, and when worn, the outer wall contacts the labiocheir muscles; the outer wall, the bearing portion and the inner wall form an upper groove that defines the upper dental arch and a lower groove that defines the lower dental arch; at least part of the inner wall extends from a position adjacent to the lower groove to the terminal lower edge toward the lingual side to form a supporting portion, and the supporting portion is provided with a tongue adjustment portion with the tip facing the tongue to correct the position of the tongue.

[0007] Preferably, the supporting portion is arranged at least corresponding to the position of the teeth in the anterior area of ​​the mandible.

[0008] Preferably, a tangent line at the highest point of the supporting portion along the gingival-maxillary direction is arranged at a preset angle with the coronal plane, and the preset angle is greater than 0° and less than or equal to 45°.

[0009] Preferably, the thickness of the supporting portion in the lip and tongue direction is greater than the thickness of the inner wall of the remaining portion.

[0010] Preferably, the thickness of the supporting portion in the lip and tongue direction ranges from 3mm to 5mm.

[0011] Preferably, the angle between the long axis of the tongue adjustment part body and the horizontal plane is in the range of 60°-120°.

[0012] Preferably, the tongue adjustment portion comprises a first tongue adjustment portion and a second tongue adjustment portion, and in the gingival-jaw direction, the first tongue adjustment portion is closer to the dentition than the second tongue adjustment portion.

[0013] Preferably, the angle between the long axis of the main body of the first tongue adjustment part and the horizontal plane is inconsistent with the angle between the long axis of the main body of the second tongue adjustment part and the horizontal plane.

[0014] Preferably, the angle between the long axis of the main body of the first tongue adjustment part and the horizontal plane is smaller than the angle between the long axis of the main body of the second tongue adjustment part and the horizontal plane.

[0015] Preferably, the tongue adjustment portion and the supporting portion are separately connected.

[0016] Another embodiment of the present application provides a dental system, comprising at least a first dental instrument and a second dental instrument, wherein the first dental instrument and the second dental instrument are respectively the dental instruments described in any one of the above, wherein a tangent line of the first supporting portion of the first dental instrument at the highest point in the anterior tooth area along the gingival-mandibular direction has a first angle with the coronal plane, and a tangent line of the second supporting portion of the second dental instrument at the highest point in the anterior tooth area along the gingival-mandibular direction has a second angle with the coronal plane, and the first angle is different from the second angle.

[0017] Preferably, the correction stage corresponding to the second dental appliance is a subsequent stage of the correction stage corresponding to the first dental appliance, and the second angle is greater than the first angle.

[0018] Compared with the prior art, the dental instrument and dental system provided by the utility model have the following advantages:

[0019] The dental instrument in each embodiment of the present application has an inner wall extending from a position adjacent to the lower groove to the lower edge of the terminal end toward the tongue side to form a supporting portion, and a tongue adjustment portion for correcting the tongue position is provided on the supporting portion, with the tip of the tongue adjustment portion being arranged toward the tongue. When the patient's tongue is in an incorrect position during wearing, the tongue will contact the tip of the tongue adjustment portion to feel slight pain and discomfort, prompting the patient to adjust the current tongue position, thereby playing a role in passively correcting the tongue position and training the tongue muscles, thereby achieving better correction effects.

[0020] In addition, multiple groups of tongue adjustment parts are arranged in parallel on the supporting part of the dental instrument in each embodiment of the present application, and the tip of the tongue adjustment part of each group is in a different direction. Firstly, the multiple groups of tongue adjustment parts are arranged in parallel so that the tongue body can be fully stimulated from the tip of the tongue to the part near the root of the tongue during the wearing process, thereby making the overall lifting position correction effect of the tongue body better. Secondly, the tips in different directions match the morphological settings at different positions of the tongue body, so that the tips can always face the tongue body, thereby achieving more sufficient stimulation.

[0021] The present application also includes a dental system, which is provided with a supporting part with different inclination angles corresponding to different correction stages. The dental system in the present application can meet the different requirements for the position of the tongue adjustment part after the dental arch changes in different correction stages, thereby improving the correction effect and shortening the correction cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1is a schematic diagram of the structure of dental instruments in some embodiments of the present application;

[0024] Figure 2 is a schematic structural diagram of a dental apparatus in some embodiments of the present application at another viewing angle;

[0025] Figure 3 Schematic diagrams of various anatomical planes in some embodiments of the present application;

[0026] Figure 4 is a schematic structural diagram of a dental apparatus in some embodiments of the present application at another viewing angle;

[0027] Figure 5 yes Figure 4 A cross-sectional schematic diagram of the embodiment along CC in the wearing state;

[0028] Figure 6 is a schematic diagram of the structure of the supporting part in some embodiments of the present application;

[0029] Figure 7 is a schematic diagram of the structure of the supporting part in some embodiments of the present application;

[0030] Figure 8 is a schematic diagram of the structure of the supporting part in some embodiments of the present application;

[0031] Fig. 9 is a schematic diagram of the structure of the supporting part in some embodiments of the present application;

[0032] Fig.10 is a schematic diagram of the structure of dental instruments in other embodiments of the present application;

[0033] Fig.11 yes Fig.10 A schematic cross-sectional view of the embodiment along EE;

[0034] Fig.12 is a schematic diagram of the structure of dental instruments in other embodiments of the present application;

[0035] Fig.13 is a schematic diagram of the structure of dental instruments in other embodiments of the present application;

[0036] Fig.14 is a schematic diagram of the structure of a dental system in some embodiments of the present application;

[0037] Fig.15 is a schematic diagram of the structure of a dental system in some other embodiments of the present application;

[0038] Fig.16 yes Fig.15 The cross-sectional schematic diagram of the embodiment along the sagittal plane when worn. DETAILED DESCRIPTION

[0039] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not constitute any limitation, and the various embodiments can be combined with each other and referenced to each other without contradiction.

[0040] The "posterior tooth area" mentioned in each embodiment of the present application is defined according to the classification of teeth in the second edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 36-38, including premolars and molars, which are displayed as teeth 4-8 by the FDI marking method, and the teeth 1-3 in the anterior tooth area by the FDI marking method. The teeth in the anterior tooth area include central incisors, lateral incisors, and canines. In addition, for the teeth in the deciduous tooth stage, the "posterior tooth area" is defined according to the classification of deciduous teeth in the second edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 40-41, including three categories: deciduous incisors, deciduous canines, and deciduous molars, among which deciduous incisors include deciduous central teeth and deciduous lateral incisors, and deciduous molars include first deciduous molars and second deciduous molars.

[0041] The shell-like body is provided with a number of cavities for accommodating multiple teeth, and is divided into lingual surface, labial surface, mesial surface and distal surface. Among them, "lingual surface" is named according to the names of various surfaces of the crown in the 2nd edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 35-36, where the labial surface and buccal surface are the sides of the crown of the front teeth close to the lips, and the sides of the crown of the back teeth close to the cheek are called buccal surfaces. The lingual surface is the side of the crown of the front teeth and the back teeth close to the tongue, collectively referred to as the lingual surface. The mesial surface and the distal surface are the two surfaces adjacent to the crown of the adjacent teeth, collectively referred to as the adjacent surfaces. The side closer to the midline of the face is called the mesial surface, and the side farther from the midline of the face is called the distal surface.

[0042] The various implementations of the present application are described below in conjunction with the accompanying drawings.

[0043] refer to Figures 1 to 5As shown, an embodiment of the present application provides a dental device 1, which includes a bearing portion 11 that contacts at least part of the teeth, and the bearing portion 11 is arranged parallel to the occlusal surface or the horizontal plane and contacts the jaw surface of part of the teeth. The lingual edge of the bearing portion 11 extends toward the gums to form an inner wall 12 located on the lingual side of the dental arch, and specifically, it can extend 1mm-3mm toward the maxillary and mandibular directions respectively to cover the lingual side of the maxillary and mandibular teeth and part of the gum area. The labial and buccal edges of the bearing portion 11 extend toward the gums to form an outer wall 13, and similarly, the outer wall 13 can extend 1mm-9mm toward the maxillary and mandibular directions respectively to cover the labial side of the maxillary and mandibular teeth and part of the gum area, and the outer wall 13 can block the contact between the labial and buccal muscles and the dentition, thereby eliminating the influence of muscles on tooth correction during the correction process. The outer wall 13, the bearing portion 11 and the inner wall 12 form an upper groove 14 defining the upper dental arch and a lower groove 15 defining the lower dental arch; the relative position relationship between the upper groove 14 and the lower groove 15 is the relationship between the upper and lower jaws of the final correction target, and the sagittal distance between the corresponding positions of the upper groove 14 and the lower groove 15 in the anterior tooth area corresponds to the coverage relationship of the teeth in the anterior tooth area at the correction target position. At least part of the inner wall 12 extends from the position adjacent to the lower groove 15 to the lower edge of the end to the lingual side to form a supporting portion 121, the supporting portion 121 is inclined relative to the coronal plane as a whole, and the supporting portion 121 is provided with a tongue adjustment portion 1211 with the tip facing the tongue body 2 for correcting the position of the tongue body 2.

[0044] The anatomical surface references in each embodiment of this application Figure 3 shown.

[0045] In some embodiments, reference Figure 4 As shown, the support portion 121 is set at least corresponding to the position of the teeth in the mandibular anterior teeth area. Specifically, the support portion 121 is set between the tooth positions of the 3-3 teeth of the dentition. Specifically, the support portion 121 can be fitted with or spaced from the sublingual fold area. Compared with the support portion 121 being set only corresponding to the dentition, the support portion 121 being set corresponding to the sublingual fold area can make the tongue adjustment portion 1211 cover more areas of the tongue body, thereby stimulating more areas of the tongue body, for example, from the tip of the tongue to the adjacent root of the tongue can be fully stimulated to achieve a better correction effect.

[0046] In some embodiments, the tangent line at the highest point of the supporting portion 121 along the gingival-jaw direction is set at a preset angle with the coronal plane W, and the preset angle range is greater than 0° and less than or equal to 45°. Further, the preset angle range can be greater than 20° and less than or equal to 45°. The advantage of setting this preset angle range is that the lifting height of the supporting portion 121 is guaranteed so that the tongue adjustment portion 1211 provided on the supporting portion 121 is in effective contact with the tongue body. Specifically, refer to Figure 6 As shown, the preset angle is Figure 6 In α, the tangent line at the highest point of the support portion 121 along the gingival and jaw direction is specifically the tangent line at the highest point P of the surface A on the side of the support portion 121 adjacent to the lower groove. The surface A can be a plane or a curved surface. When the surface A is a plane or a part of a plane, refer to Figure 7 As shown, the tangent line at the highest point of surface A is on the plane; when surface A is a curved surface, refer to Figure 6 As shown, the tangent line at the highest point of surface A is the tangent line at the point where the curvature of the curved surface is the largest. A preferred solution is that the surface A of the supporting portion 121 adjacent to the lower groove is a curved surface, thereby ensuring the fit between the supporting portion 121 and the sublingual fold area and improving the wearing comfort of the patient. Similarly, the surface B of the supporting portion 121 adjacent to the tongue body can be a flat surface or a curved surface. Preferably, the surface B is designed to be a curved surface such as Figure 6 and Figure 7 As shown, it better matches the shape of the tongue, so that the setting of the tongue adjustment part 1211 can also more easily match the shape of the tongue, and the stimulation to the tongue is more sufficient.

[0047] In some embodiments, reference Figure 8 As shown, in order to increase the strength of the supporting portion 121, thereby increasing the support of the supporting portion 121 for the tongue adjustment portion 1211, the thickness L1 of the supporting portion 121 in the labial and lingual direction is greater than the thickness L2 of the inner wall of the remaining portion. Furthermore, the thickness L1 of the supporting portion 121 in the buccal and lingual direction ranges from 3mm to 5mm. The advantage of this size range design is that it conforms to the size of the patient's oral cavity (i.e., the size of the patient's sublingual area) to ensure the patient's wearing comfort. At the same time, after the tongue adjustment portion 1211 is provided, this size range allows the patient's tongue to be better adjusted to the range from the incisal edge of the mandibular anterior teeth to the top of the alveolar ridge.

[0048] In some embodiments, reference Fig. 9 As shown, the angle β between the main axis X of the tongue adjustment part 1211 and the horizontal plane M ranges from 60° to 120°. This angle range allows the tip to always face the tongue body, thereby achieving more adequate stimulation. Preferably, the angle β between the main axis X of the tongue adjustment part 1211 and the horizontal plane is 60°, 90°, 100° and 120°. In addition, different angles can be designed according to the relative positional relationship between the tongue adjustment part 1211 and the tongue body. For example, the angle between the main axis X of the tongue adjustment part 1211 located near the lower dentition on the supporting part 121 and the horizontal plane ranges from 60° to 100°; the angle between the main axis X of the tongue adjustment part 1211 located away from the lower dentition on the supporting part 121 and the horizontal plane ranges from 100° to 120°.

[0049] In each embodiment of the present application, the angle between the long axis of the tongue adjustment part and the horizontal plane is an angle close to the tongue side (such as Fig. 9).

[0050] In some embodiments, reference Fig.10 and Fig.11 As shown, the tongue adjustment portion 1211 includes a first tongue adjustment portion 1211a and a second tongue adjustment portion 1211b. In the gingival-jaw direction, the first tongue adjustment portion 1211a is closer to the dentition than the second tongue adjustment portion 1211b. In one case, the first tongue adjustment portion 1211a and / or the second tongue adjustment portion 1211b include a plurality of tongue adjustment portion 1211 bodies with a tip structure arranged in parallel in the horizontal direction. Setting the tongue adjustment portion 1211 at different positions can make the tongue body from the tip of the tongue to the part close to the root of the tongue be fully stimulated during wearing, thereby increasing the stimulation area of ​​the tongue body.

[0051] In some embodiments, continue to refer to Fig.11 As shown, the first tongue adjustment portion 1211a and the second tongue adjustment portion 1211b are arranged at different positions on the supporting portion 121, and the angle between the long axis of the first tongue adjustment portion 1211a and the horizontal plane is inconsistent with the angle between the long axis of the second tongue adjustment portion 1211b and the horizontal plane. Specifically, in order to ensure that the tip of the tongue adjustment portion 1211 can always be set toward the tongue body, the angle between the long axis of the first tongue adjustment portion 1211a close to the lower dentition and the horizontal plane is smaller than the angle between the long axis of the second tongue adjustment portion 1211b far from the lower dentition and the horizontal plane. By providing multiple groups of different tongue adjustment portions 1211 and multiple groups of tongue adjustment portions 1211 with different tip directions, the tips of the tongue adjustment portions 1211 at different positions can always be set toward the tongue body, thereby achieving more adequate stimulation.

[0052] In some embodiments, the tongue adjustment portion 1211 and the supporting portion 121 are connected separately. Fig.12 As shown, the tongue adjustment portion 1211 is fixed to the surface of the supporting portion 121 by bonding. Fig.13 As shown, the tongue adjustment part 1211 is fixed to the surface of the supporting part 121 by a snap-fitting manner. In the case of a separate connection, the tongue adjustment part 1211 can be made of a different material from the supporting part 121, or have a different mechanical strength from the supporting part 121. Preferably, the mechanical strength of the tongue adjustment part 1211 is greater than the mechanical strength of the supporting part 121. For example, the tongue adjustment part 1211 can be made of metal or plastic. Such a design can make the tongue adjustment part 1211 more stimulating to the tongue.

[0053] Another embodiment of the present application provides a dental system, the dental system includes a series of dental instruments, the series of dental instruments are designed to gradually implement a treatment plan, the treatment plan can be divided into multiple treatment stages, and the teeth can be gradually corrected to a target position according to different treatment needs. The series of dental instruments includes at least a first dental instrument and a second dental instrument, and the first dental instrument and the second dental instrument are respectively the dental instruments described in any one of the above.

[0054] In some embodiments, reference Fig.14 As shown, a series of dental instruments at least includes a first dental instrument 100 and a second dental instrument 200, wherein the first dental instrument 100 and the second dental instrument 200 are respectively the dental instruments described in any one of the above, wherein a tangent line at the highest point of the first supporting portion of the first dental instrument 100 at the front teeth position has a first angle with the coronal plane, and a tangent line at the highest point of the second supporting portion of the second dental instrument 200 at the front teeth position has a second angle with the coronal plane, and the first angle is the same as the second angle.

[0055] In other embodiments, reference Fig.15 As shown, a series of dental instruments at least includes a first dental instrument 300 and a second dental instrument 400, wherein the first dental instrument 300 and the second dental instrument 400 are respectively the dental instruments described in any one of the above, wherein the tangent line of the first support portion of the first dental instrument 300 at the highest point in the anterior tooth area has a first angle with the coronal plane, and the tangent line of the second support portion of the second dental instrument 100 at the highest point in the anterior tooth area has a second angle with the coronal plane, and the first angle is different from the second angle. Specifically, in some cases, with reference to Fig.16 As shown, the correction stage corresponding to the second dental appliance 400 is a subsequent stage of the correction stage corresponding to the first dental appliance 300, and the second angle γ between the tangent line at the highest point of the second supporting part of the second dental appliance 400 and the coronal plane can be designed to be greater than the first angle σ between the tangent line at the highest point of the first supporting part of the first dental appliance 200 and the coronal plane. Since in the early stage of correction, the patient needs to have an adaptation stage for the appliance, and, especially for patients with severe tongue sinking, if the angle between the tangent line at the highest point of the supporting part at the position of the front teeth and the coronal plane is set too large in the early stage of correction, the tip of the tongue adjustment part may cause damage to the patient's tongue or oral cavity. Therefore, in order to allow the patient to gradually adapt to the setting of the tongue adjustment part, in the early stage of correction, the angle between the tangent line at the highest point of the supporting part at the position of the front teeth and the coronal plane is smaller than the angle in the middle stage of correction, so that the height of the tongue adjustment part in the early stage of correction is smaller than the height of the tongue adjustment part in the middle stage of correction or the late stage of correction.

[0056] It should be noted that the above embodiments can be freely combined as needed to form different new implementation plans without causing any contradiction. The implementation plans formed after such combination are all within the protection scope of the present utility model. In order to save the length of the application text, they will not be described in detail here.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0058] Similarly, the above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A dental instrument, characterized in that: The dental device includes a bearing portion that contacts at least part of the teeth, the lingual edge of the bearing portion extends toward the gums to form an inner wall located on the lingual side of the dental arch, and the labial and buccal edges of the bearing portion extend toward the gums to form an outer wall, and when worn, the outer wall contacts the labial and buccal muscles; the outer wall, the bearing portion and the inner wall form an upper groove that defines the upper dental arch and a lower groove that defines the lower dental arch; at least part of the inner wall extends from a position adjacent to the lower groove to the lower edge of the end toward the lingual side to form a supporting portion, and the supporting portion is provided with a tongue adjustment portion with the tip facing the tongue body for correcting the position of the tongue body.

2. The dental apparatus according to claim 1, characterized in that The supporting portion is at least arranged corresponding to the position of the teeth in the anterior tooth area of ​​the mandible.

3. The dental apparatus according to claim 2, characterized in that: The tangent line at the highest point of the supporting portion along the gingival-jaw direction is arranged at a preset angle with the coronal plane, and the preset angle is greater than 0° and less than or equal to 45°.

4. The dental apparatus according to claim 1, wherein: The thickness of the supporting portion in the lip and tongue direction is greater than the thickness of the inner side wall of the remaining portion.

5. The dental apparatus according to claim 4, characterized in that The thickness of the supporting portion in the lip and tongue direction ranges from 3mm to 5mm.

6. The dental apparatus according to claim 1, wherein: The angle between the long axis of the tongue adjustment part body and the horizontal plane ranges from 60° to 120°.

7. The dental apparatus according to claim 6, characterized in that The tongue adjustment portion includes a first tongue adjustment portion and a second tongue adjustment portion. In the gingival-jaw direction, the first tongue adjustment portion is closer to the dentition than the second tongue adjustment portion.

8. The dental apparatus according to claim 7, characterized in that The angle between the long axis of the main body of the first tongue adjustment part and the horizontal plane is inconsistent with the angle between the long axis of the main body of the second tongue adjustment part and the horizontal plane.

9. The dental apparatus according to claim 8, characterized in that The angle between the long axis of the main body of the first tongue adjustment part and the horizontal plane is smaller than the angle between the long axis of the main body of the second tongue adjustment part and the horizontal plane.

10. The dental apparatus according to claim 1, wherein: The tongue adjusting portion and the supporting portion are separately connected.

11. A dental system, comprising at least a first dental instrument and a second dental instrument, wherein the first dental instrument and the second dental instrument are dental instruments according to any one of claims 1 to 10, respectively. The tangent line of the first supporting part of the first dental instrument at the highest point in the anterior tooth area along the gingival-mandibular direction has a first angle with the coronal plane, and the tangent line of the second supporting part of the second dental instrument at the highest point in the anterior tooth area along the gingival-mandibular direction has a second angle with the coronal plane, and the first angle is different from the second angle.

12. The dental system according to claim 11, characterized in that The second dental appliance corresponds to a treatment stage that is a subsequent stage to the treatment stage corresponding to the first dental appliance, and the second angle is greater than the first angle.

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