Shell-shaped dental instrument and shell-shaped dental instrument set

Abstract

The embodiment of the invention relates to the technical field of medical instruments, and discloses a shell-shaped dental instrument and a shell-shaped dental instrument set, and the shell-shaped dental instrument comprises a shell-shaped body which is in an integrated shell shape and is provided with a tooth containing cavity capable of containing a plurality of teeth of a tooth jaw, and a screen arranged on the lip side and / or the cheek side of the shell-shaped body, the screen is of a cavity structure which is formed by extending the gingival end of the shell-shaped body towards the vestibular sulcus of the jaw and is provided with an opening facing the gingiva, and the thickness of the screen in the lip-tongue direction at least meets the condition that the screen can block the contact between the lip muscle and / or the buccal muscle and the corresponding teeth during wearing. On the premise that the screen blocking function is guaranteed, the structure is simpler, and use is more convenient.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of medical device manufacturing, and in particular, to a shell-shaped dental instrument and a set of shell-shaped dental instruments. Background Art

[0002] Malocclusion refers to the disharmony in the position and relationship of teeth, dental arches, jaws, and craniofacial regions. Common symptoms include crowded dentition, diastema, crossbite, etc. Most malocclusions occur during the growth and development of children due to congenital genetic factors or acquired environmental factors, such as diseases, bad oral habits, and dentition transition disorders. It can also be caused by reasons such as trauma and periodontal diseases after growth and development, resulting in problems such as irregular tooth alignment, abnormal occlusion relationship of the upper and lower dental arches, abnormal size, shape, and position of the jaws, and facial deformities.

[0003] A shell-shaped tooth orthodontic appliance is a device for treating malocclusion. It uses a safe elastic transparent polymer material to complete the orthodontic process almost unnoticed by others. In scenarios where intermaxillary relationship adjustment is required, an orthodontic appliance with a jaw position adjustment device needs to be worn. Moreover, according to different indications, it is also necessary to promote or inhibit the growth of the upper or lower jaws. In the existing orthodontic stage for teenagers, functional orthodontic appliances are generally used to block the muscles to achieve muscle training and positioning. Common ones include labial screens and buccal screens.

[0004] There is a current screen that is independently placed in the oral cavity through an active functional orthodontic appliance, which is rather troublesome to wear; there is also an integrated screen located in the tooth area, which not only affects the patient's lip closure and facial aesthetics but also affects the wrapping of the anterior teeth by the invisible orthodontic appliance and cannot achieve the movement design of the anterior teeth.

[0005] In this application, the "颌" in "错颌", "开颌", "覆颌", "颌面", etc. is a rare character (牙合, hé). Since this character is not available in the general input method font library, it is often written as "颌" in daily life and on the Internet. For the convenience of reading in this article, it is also written as "颌". Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a shell-shaped dental instrument and a set of shell-shaped dental instruments, which can be simpler in structure, more convenient to use, and shorten the orthodontic cycle while ensuring the function of the screen.

[0007] In order to solve the above-mentioned technical problems, an embodiment of the present application provides a shell-shaped dental device, comprising: a shell-shaped body, which is an integral shell and is formed with a tooth receiving cavity that can accommodate multiple teeth of a jaw, and a shield arranged on the labial side and / or buccal side of the shell-shaped body, wherein the shield is a cavity structure with an opening toward the gums formed by extending from the gingival end of the shell-shaped body toward the vestibule groove of the jaw, and the thickness of the shield in the labial and lingual direction at least satisfies: when worn, the shield can block the contact between the lip muscles and / or buccal muscles and the corresponding teeth.

[0008] An embodiment of the present application also provides a shell-shaped dental instrument set, including a first type of shell-shaped dental instrument for wearing on a user's first jaw, wherein the first type of shell-shaped dental instrument is the shell-shaped dental instrument as described above, and also including a second type of shell-shaped dental instrument for wearing on the user's second jaw.

[0009] An embodiment of the present application also provides a shell-shaped dental instrument set, comprising a first type of shell-shaped dental instrument and a second type of shell-shaped dental instrument for being worn on the first jaw and the second jaw of a user, respectively, the first type of shell-shaped dental instrument and the second type of shell-shaped dental instrument being respectively the shell-shaped dental instruments as described above, the shield of the first type of shell-shaped dental instrument being arranged on the labial side of the shell-shaped body, and the shield of the second type of shell-shaped dental instrument being arranged on the buccal side of the shell-shaped body.

[0010] The embodiment of the present application improves the shield structure in the shell-shaped dental instrument, sets the shield in the gingival area, maintains the wrapping of the orthodontic appliance in the tooth area, and does not affect the retention force of the shell-shaped dental instrument; in addition, the structure extending to the gingival side can effectively avoid the problem that the lip cheek shield in the prior art affects the lip closure and aesthetics; the shield is set integrally with the shell-shaped body, which can not only block the muscles, restore the perioral muscles to a reasonable position and realize muscle training, but also reduce its hindering effect on the normal growth of teeth. At the same time, the structure of the instrument is simple and easy to wear. In addition, the shell-shaped body design can also be used to move teeth, and teeth can be arranged while muscle training. It can be seen that the use of the shell-shaped dental instrument in the present application can realize a series of functions such as muscle blocking, muscle training, and tooth arrangement in the same wearing cycle. Integrating various functions in orthodontic design can speed up the correction cycle, increase the correction accuracy, and prevent recurrence.

[0011] In addition, the height of the gum area covered by the shield in the vertical direction is greater than or equal to 1 / 3 of the corresponding gum height in the vertical direction. A high shield can effectively block the muscles to minimize the force exerted by the muscles on the teeth and alveolar bones.

[0012] In addition, the shield at most reaches the bottom of the vestibule groove away from the tooth side, so as to minimize the foreign body sensation of the patient.

[0013] In addition, the contour of the side of the shield away from the teeth matches the contour of the bottom of the vestibule groove at the corresponding position.

[0014] In addition, the shell-shaped dental appliance is provided with an avoidance structure for avoiding the laces, thereby reducing the interference of the laces on the dental appliance and reducing the foreign body sensation in the oral cavity after wearing.

[0015] In addition, the avoidance structure is a concave structure on the side of the shield away from the teeth; or, if there are multiple shields, the avoidance structure is the spacing between two adjacent shields. Through the concave and spacing, the frenulum avoidance structure is accurately realized.

[0016] In addition, the thickness of the shield along the lip and tongue direction is greater than or equal to 3 mm and less than or equal to 10 mm. The thickness range is set so that the muscle barrier function of the shield is accurately implemented to avoid interfering with the lip closing action.

[0017] In addition, the screen is provided with a plurality of through holes on the side wall contacting the lip and cheek muscles. The through holes are provided to achieve air permeability between the cavity and the outside, thereby preventing saliva from accumulating in the cavity.

[0018] In addition, the length of the shield in the mesiodistal direction is greater than or equal to the length of the patient's smallest tooth in the mesiodistal direction. A shield of sufficient length is provided to achieve accurate shielding.

[0019] In addition, there are multiple screens, and a transition portion is provided between at least two adjacent screens, and the vertical height of the transition portion gradually decreases from the side close to the screen to the side far from the screen, and the maximum vertical height of the transition portion is lower than the highest height of the screen. The multiple screens are formed into a whole, the rigidity of the screen is increased, and the muscle force is accurately blocked.

[0020] In addition, the contour of the transition part toward the gum side is substantially the same as the gum labial and buccal side of the corresponding position, and when worn, the transition part adheres to the gum at the corresponding position, thereby increasing the overall wrapping force of the dental device by covering the gum.

[0021] In addition, the transition part is provided with a plurality of through holes on the side wall contacting the lip and cheek muscles. The through holes are provided to achieve air permeability of the covered part and avoid saliva accumulation between the part and the gums.

[0022] In addition, the shields are symmetrically distributed along the center line of the teeth, so that when muscle isolation is achieved, the force is evenly applied to avoid jaw deviation.

[0023] In addition, a first gap is provided between at least part of the tooth receiving cavity in the shell-shaped body and the labial and buccal side surfaces of the corresponding teeth received therein, providing space for the corresponding teeth to grow toward the labial and buccal side surfaces. By reserving a gap on the labial and buccal side surfaces of the teeth for the labial and buccal side surfaces of the teeth for the teeth to grow toward the labial and buccal side surfaces, under the action of the buccal barrier muscle, the pressure from the labial and buccal muscles on the corresponding teeth is reduced, and the growth resistance on the corresponding teeth is reduced, so that the teeth can grow naturally toward the correct position.

[0024] In addition, the first gap is less than or equal to 1 mm and greater than or equal to 0.05 mm. The gap range is clarified to avoid the gap being too small to play the role of reserved space, and to avoid the gap being too large to affect the packaging and wearing of the orthodontic appliance.

[0025] In addition, the shell-shaped dental appliance is provided with an avoidance structure for avoiding the laces, thereby reducing the interference of the laces on the dental appliance and reducing the foreign body sensation in the oral cavity after wearing.

[0026] In addition, the thickness of the cheek shield along the lip and tongue direction is greater than or equal to 3 mm and less than or equal to 10 mm. The thickness range is set so that the muscle barrier function of the cheek shield is accurately implemented to avoid interfering with the lip closing action.

[0027] In addition, the connection position between the buccal shield and the connected tooth receiving cavity is located in the gingival area, and a second gap is provided between the lingual side surface of the buccal shield and the buccal outer surface of the tooth receiving cavity at the corresponding position, and the geometric dimensions of the second gap satisfy that when worn, after the buccal shield contacts the buccinator muscle, the lingual side surface of the buccal shield does not contact the outer surface of the tooth receiving cavity.

[0028] In addition, the buccal shield covers at least 1 / 2 of the height of the crown of the tooth at the corresponding position of the jaw. The buccal shield coverage height is limited to accurately achieve the muscle barrier effect.

[0029] In addition, the width of the second gap in the lip and tongue direction is greater than or equal to 2 mm and less than or equal to 10 mm.

[0030] In addition, the cheek shield is built with fillers, which are prefabricated resin blocks, to increase the firmness of the cheek shield and avoid damage during wearing.

[0031] In addition, the buccal shield is a cavity structure formed by the buccal side of the tooth receiving cavity protruding toward the buccal side, and a third gap is provided between the cavity structure and the buccal side of the corresponding tooth. By providing the third gap, the thickness of the cavity structure is limited, so that after wearing, the contact between the buccal muscles and the corresponding teeth can be blocked, and the pressure of the buccal muscles on the posterior teeth inward can be reduced, so that the posterior teeth can grow normally in the buccal and lingual directions.

[0032] In addition, the buccal shield extends toward the opposing jaw to at least partially cover the buccal side of the opposing jaw's tooth crown.

[0033] In addition, the buccal guard also extends toward the vestibule groove of the jaw, covering at least part of the gums of the jaw. By covering part of the gums, the force can be dispersed to the gum areas of multiple teeth after being subjected to pressure, minimizing the hindrance to tooth growth.

[0034] In addition, the buccal shield extends from 1 / 2 of the first premolar to 1 / 2 of the last tooth in the mesiodistal direction, or from 1 / 2 of the first deciduous molar to 1 / 2 of the last tooth. A certain length range is limited to ensure that the buccal muscle is sufficiently blocked while avoiding excessive length that affects comfort. The distance between the last tooth of the posterior teeth and the buccal muscle is small, and leaving this position open further reduces the foreign body sensation in the mouth when wearing.

[0035] In addition, the shell-shaped dental device is a shell-shaped dental device worn on the upper jaw, and also includes a palatal arch arranged on the lingual side of the posterior tooth area of ​​the shell-shaped body, and the two ends of the palatal arch are respectively partially connected to the shell-shaped body; when worn, the palatal arch induces the buccal movement of the teeth in the posterior tooth area through deformation. The palatal arch structure is provided to assist in arch expansion, facilitate the buccal movement of the teeth, and control the tooth gap.

[0036] In addition, the shell-shaped dental appliance is a shell-shaped dental appliance worn on the upper jaw, and further comprises a tongue protrusion arranged on the tongue side of the anterior teeth area of ​​the shell-shaped body for inducing the tongue tip to adjust from the first position to the second position. The tongue protrusion structure is arranged to assist in tongue position adjustment, facilitate synchronous training of tongue muscles during orthodontics, and realize accurate placement of the tongue tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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.

[0038] Figure 1 is a front view of a shell-shaped dental instrument provided according to one embodiment of the present application;

[0039] Figure 2 It is a schematic diagram of wearing a shell-shaped dental instrument provided according to one embodiment of the present application;

[0040] Figure 3a is a schematic cross-sectional view of the front teeth region of a shell-shaped dental appliance provided according to one embodiment of the present application;

[0041] Figure 3b is a schematic cross-sectional view of the front teeth region of another shell-shaped dental appliance provided according to one embodiment of the present application;

[0042] Figure 3c is a schematic cross-sectional view of a posterior tooth region of another shell-shaped dental appliance provided according to one embodiment of the present application;

[0043] Figure 4 is a front view of another shell-shaped dental device provided according to one embodiment of the present application;

[0044] Figure 5 is a front view schematic diagram of a dental model in a shell-shaped dental appliance provided according to one embodiment of the present application;

[0045] Figure 6 is a side view of a dental model in a shell-shaped dental appliance provided according to one embodiment of the present application;

[0046] Figure 7 is a front view of a shell-shaped dental instrument provided according to another embodiment of the present application;

[0047] Figure 8 yes Figure 7 The enlarged schematic diagram of part A in the middle;

[0048] Fig. 9 is a front view of another shell-shaped dental device provided according to another embodiment of the present application;

[0049] Fig.10 is a front view of another shell-shaped dental device provided according to another embodiment of the present application;

[0050] Fig.11 yes Fig.10 The enlarged schematic diagram of part B in the middle;

[0051] Fig.12 is a front view of another shell-shaped dental device provided according to another embodiment of the present application;

[0052] Fig.13 yes Fig.12 The enlarged schematic diagram of part C in the middle;

[0053] Fig.14 is a front view of another shell-shaped dental device provided according to another embodiment of the present application;

[0054] Fig.15 is a front view of another shell-shaped dental device provided according to another embodiment of the present application;

[0055] Fig.16 is a front view schematic diagram of a dental model in a shell-shaped dental appliance provided according to one embodiment of the present application;

[0056] Fig.17 is a three-dimensional schematic diagram of another shell-shaped dental device provided according to another embodiment of the present application;

[0057] Fig.18 is a three-dimensional schematic diagram of another shell-shaped dental device provided according to another embodiment of the present application;

[0058] Fig.19 It is a schematic diagram of wearing a shell-shaped dental instrument set provided according to one embodiment of the present application;

[0059] Fig. 20 is a front view of a shell-shaped dental instrument set provided according to another embodiment of the present application;

[0060] Fig.21 is a front view of another shell-shaped dental device provided according to another embodiment of the present application;

[0061] Fig. 22 is a schematic cross-sectional view of a posterior tooth region of another shell-shaped dental appliance provided according to another embodiment of the present application;

[0062] Fig.23 is a schematic diagram of wearing another shell-shaped dental appliance provided according to another embodiment of the present application;

[0063] Fig.24a is a front view of another shell-shaped dental device provided according to another embodiment of the present application;

[0064] Figure 24b is a schematic cross-sectional view of a posterior tooth region of another shell-shaped dental appliance provided according to another embodiment of the present application;

[0065] Fig.25 is a schematic diagram of wearing another shell-shaped dental appliance provided according to another embodiment of the present application;

[0066] Fig.26 is a three-dimensional schematic diagram of another shell-shaped dental device provided according to another embodiment of the present application;

[0067] Fig. 27 It is a three-dimensional schematic diagram of another shell-shaped dental instrument provided according to another embodiment of the present application. DETAILED DESCRIPTION

[0068] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the embodiments 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 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 be construed as any limitation, and the various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0069] The "anterior tooth area" and "posterior tooth area" mentioned in various embodiments of the present application are defined according to the classification of teeth in the second edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 36-38. The posterior tooth area includes premolars and molars, which are shown as teeth 4-8 in the FDI marking method. The anterior tooth area is shown as teeth 1-3 in the FDI marking method, and the teeth in the anterior tooth area include central incisors, lateral incisors and canines.

[0070] The "jaw plane" mentioned in each embodiment of the present application is obtained according to the definition and confirmation method on page 83 of the 6th edition of "Orthodontics". One method is to connect the occlusal midpoint of the first permanent molar and the midpoint between the upper and lower central incisors (1 / 2 of the overbite or open bite); the other method is obtained by equally dividing the jaw contact points of the posterior teeth, and the jaw contact points of the first permanent molar and the first deciduous molar or the first premolar are often used.

[0071] One embodiment of the present application relates to a shell-shaped dental appliance.

[0072] like Figure 1 -3, 19, the shell-shaped dental instrument specifically includes: a shell-shaped body 10, which is an integrated shell and is formed with a tooth receiving cavity that can accommodate multiple teeth of the jaw, and a shield 20 arranged on the lip side of the shell-shaped body 10, the shield 20 is a cavity structure with an opening toward the gums formed by extending from the gingival end of the shell-shaped body 10 to the vestibule groove of the jaw, and the thickness of the shield 20 in the lip and tongue direction at least satisfies: when worn, the shield 20 can block the contact between the lip muscles and the corresponding teeth. It can be understood that in this embodiment, the shell-shaped dental instrument is an orthodontic appliance worn on the upper jaw 1, and the corresponding lower jaw 2 can wear the orthodontic appliance 4 or not. Although the figure takes the wearing of the orthodontic appliance 4 as an example, in actual application, it can be flexibly set according to whether it needs to be worn, which will not be repeated here.

[0073] Specifically, the height H1 of the gingival area covered by the screen 20 in the present embodiment in the vertical direction is greater than or equal to 1 / 2 of the corresponding gingival vertical height H2. The screen 20 with a higher height can effectively block the muscles so as to minimize the force exerted by the muscles on the teeth and alveolar bones. In other embodiments, the height ratio can also be H1 greater than or equal to H2*1 / 3, which are not listed here one by one. It should also be noted that the screen 20 at most reaches the bottom of the vestibule groove away from the tooth side, that is, the maximum value of H1 is H2. On the one hand, stimulating the vestibule groove is conducive to promoting tooth growth. On the other hand, avoiding excessively high screen 20 to stimulate soft tissues reduces the patient's foreign body sensation. It can be understood that the contour 201 of the screen 20 away from the tooth side can match the contour of the bottom of the vestibule groove at the corresponding position. So that the contact with the vestibule groove is more uniform and the stimulation to the oral soft tissue is minimized.

[0074] It should also be noted that the thickness Lp of the screen 20 along the lip and tongue direction in this embodiment is greater than or equal to 3 mm and less than or equal to 10 mm. The specific size can be set according to the patient's oral data or according to the doctor's correction needs, and will not be listed here. It can be seen that the thickness range is set so that the muscle barrier function of the screen 20 is accurately implemented to avoid interfering with the lip closing action.

[0075] See also Figure 3a The connection between the shield 20 and the shell-like body 10 may have a structure 20a, and the connection between the shield 20 and the gingival end of the shell-like body 10 may present an inwardly concave arc-shaped transition structure. On the one hand, this structure can prevent the convex shield 20 from affecting the wrapping of the shell-like body 10 on the teeth and avoiding affecting the retention force. On the other hand, it can also prevent the shield 20 from contacting the labial side of the teeth and affecting the normal growth of the teeth.

[0076] Furthermore, in some embodiments, at least part of the tooth receiving cavity in the shell-shaped body and the labial and buccal side of the corresponding tooth accommodated therein have a first gap for providing space for the corresponding tooth to grow toward the labial and buccal side. By reserving a gap for the labial and buccal side of the tooth for the tooth to grow toward the labial and buccal side, the pressure from the labial and buccal muscles on the corresponding tooth is reduced under the action of the blocking muscles, and the growth resistance on the corresponding tooth is reduced, so that the tooth can grow naturally to the correct position. Figure 3b and Figure 3c , the first gap 11 extends from the occlusal surface of the corresponding tooth to the gingival end. The extension position of the gap is limited to avoid obstruction of the tooth growth direction. It can be understood that when the tooth is anterior teeth, the occlusal surface refers to the incisal end a1, and the first gap 11 extends from the incisal end a1 to the gingival end b1; when the tooth is posterior teeth, the first gap 11 extends from one end a2 of the occlusal surface to the gingival end b2. At the same time, the tooth receiving cavity in the posterior teeth area can also be set on the occlusal surface so as not to be too close to the occlusal surface of the tooth, providing a channel for the buccal growth of the tooth.

[0077] In addition, the first gap 11 is less than or equal to 1 mm and greater than or equal to 0.05 mm. Further, the first gap 11 can be less than or equal to 0.5 mm and greater than or equal to 0.05 mm, such as 0.5 mm, 0.6 mm or 0.8 mm, which can be specifically based on the doctor's design needs and will not be listed one by one. Specifically, the width of the gap on the buccal side in the buccal-lingual direction is L1, and the gap size is clearly defined to avoid the gap being too small to play the role of reserved space, and to avoid the gap being too large to affect the wrapping and wearing of the orthodontic appliance. The gap can be set according to the time period of wearing the shell-shaped dental appliance, or according to the expected buccal growth of the corresponding tooth, which will not be repeated here.

[0078] In addition, the length W1 of the shield 20 in the mesiodistal direction in this embodiment can be greater than or equal to the length of a tooth W2 in the mesiodistal direction. Specifically, the one tooth can be the smallest tooth of the patient, or a tooth in the tooth position. When there are multiple teeth in the tooth position, it can also be the smallest tooth in the tooth position or any one of the teeth. In addition, in some embodiments, when W1 is greater than or equal to W2, it can also be greater than or equal to 2 times of W2. It can be understood that a shield 20 of sufficient length is set to achieve accurate blocking of the shield 20.

[0079] It should also be noted that in this embodiment, there are two screens 20, and there is a gap W3 between the two screens 20 to avoid the frenulum of the lip. It can be seen that the shell-shaped dental appliance in one embodiment is provided with a avoidance structure for avoiding the frenulum. In order to reduce the interference of the frenulum on the dental appliance and reduce the foreign body sensation in the oral cavity after wearing. It can be understood that there are multiple screens 20, and the avoidance structure is the interval space between two adjacent screens.

[0080] Further explanation, the current hot pressing film process can be used in this embodiment. The specific hot pressing film forming process generally includes: 3D printing is performed based on the corresponding digital dental model and a series of intermediate digital dental models to produce a physical dental model 5 (such as Figure 5-6 As shown in the figure, a membrane is then hot-pressed on the above-mentioned physical dental model to obtain a shell-shaped dental appliance including a shield 20 and a tooth shape, and then the shell-shaped dental appliance including the tooth shape is cut along the gum line or adjacent to the gum line, and the shield module 51 is cut along the outer contour, thereby obtaining a shell-shaped dental appliance with a shield 20 that can accommodate teeth in this embodiment. It can be understood that since the shield module 51 has a certain thickness, the membrane will be wrapped around the outside of the shield module 51 during the lamination process, thereby naturally forming a boundary that curls inward along the edge of the module, thereby also achieving a smooth contour of the dental appliance in this embodiment.

[0081] It is understandable that in actual applications, in addition to the above-mentioned die-casting process, the shell-shaped dental device in this embodiment can also be directly manufactured by additive manufacturing process in some embodiments. The process steps of this method include designing the screen 20 structure and other required structures on the basic digital dental model when designing the digital dental device model, and then printing them together in the printing stage, without the need for additional processes, and obtaining them in one go. The obtained dental device has good firmness. The additive manufacturing method in this embodiment can be SLA (stereolithography) printing or DLP (digital light processing) printing. In actual applications, other 3D printing technologies can also be used, which are not listed here one by one.

[0082] It can be understood that in some embodiments, the avoidance structure is a concave structure on the side of the shield 20 away from the teeth. Figure 4For illustration, the screen 20 is a continuous whole, and its profile 201 is provided with a concave structure 202. It can be seen that the lace avoidance structure can be accurately realized through the above-mentioned concave and spacing.

[0083] It is worth mentioning that in this embodiment, the shields 20 are symmetrically distributed around the tooth midline T. When muscle isolation is achieved, the force is evenly applied to avoid jaw deviation.

[0084] It can be seen that this embodiment improves the structure of the shield 20 in the shell-shaped dental instrument, sets the shield 20 in the gingival area, maintains the wrapping of the orthodontic appliance in the tooth area, and does not affect the retention force of the shell-shaped dental instrument; in addition, the structure extending to the gingival side can effectively avoid the problems of the lip cheek shield affecting lip closure and aesthetics in the prior art; the shield is set integrally with the shell-shaped body, which can not only block the muscles, restore the perioral muscles to a reasonable position and achieve muscle training, but also reduce its hindering effect on the normal growth of teeth. At the same time, the structure of the instrument is simple and easy to wear. In addition, the shell-shaped body design can be used to move teeth and arrange teeth while training muscles. It can be seen that the use of the shell-shaped dental instrument in this application can realize a series of functions such as muscle blocking, muscle training, and tooth arrangement in the same wearing cycle. Integrating various functions in orthodontic design can speed up the correction cycle, increase the correction accuracy, and prevent recurrence.

[0085] Another embodiment of the present application also relates to a shell-shaped dental instrument. This embodiment is substantially the same as the previous embodiment, with the main improvement being that a transition portion 205 is provided between two adjacent shields 20 in this embodiment, so that the plurality of shields 20 are formed into a whole, thereby increasing the rigidity of the shields 20 and accurately blocking muscle force.

[0086] Combination Figure 7-8 For explanation, in this embodiment, there are two screen guards 20, and a transition portion 205 is provided between two adjacent screen guards 20. The vertical height of the transition portion 205 gradually decreases from the side close to the screen guard 20 to the side away from the screen guard 20, and the maximum vertical height of the transition portion 205 is lower than the highest height of the screen guard. It can be seen from the figure that the maximum height H3 of the transition portion 205 close to the screen guard 20 is greater than the middle height H4 away from the screen guard 20. The transition portion 205 is used to form a plurality of screen guards 20 as a whole, thereby increasing the rigidity of the screen guard 20 and accurately blocking muscle force. At the same time, the arc line of the edge contour is realized by the transition portion 205 with a gradual height change, which can reduce the foreign body sensation in the mouth when worn. Furthermore, in addition to two, the number of screen guards 20 can also be more, such as four, five, six, etc., which are not listed here one by one.

[0087] It is worth mentioning that in addition to the transition portion 205 that can be provided between two adjacent screen blocks 20, a connection structure 206 with a gradual height change (such as Fig. 9As shown), the connection size between the screen block 20 and the shell-like body 10 can be increased, so that the screen block 20 and the shell-like body 10 are more integrated and the overall rigidity is stronger.

[0088] In addition, the contour of the transition part 205 toward the gum side is substantially the same as the gum labial and buccal side of the corresponding position, and when worn, the transition part 205 adheres to the gum at the corresponding position, thereby increasing the overall wrapping force of the dental device by covering the gum.

[0089] Another embodiment of the present application also relates to a shell-shaped dental instrument, which is substantially the same as the above embodiment, with the main improvement being that in this embodiment, the shield 20 is provided with a plurality of through holes on the side wall contacting the lip and cheek muscles. The through holes are provided to achieve air permeability between the cavity and the outside, thereby preventing saliva from accumulating in the cavity.

[0090] Combination Figure 10-11 As shown, the shield 20 is provided with a plurality of first through holes 2001 on the side wall contacting the lip and cheek muscles. The first through holes 2001 are provided to achieve air permeability between the cavity and the outside, and to avoid saliva accumulation in the cavity. It can be understood that there is saliva in the oral cavity, and when the device worn in the oral cavity stimulates the soft tissue inside the oral cavity, the secretion of saliva will be accelerated. Therefore, in this embodiment, in order to avoid saliva accumulation in the cavity structure of the shield 20, through holes are provided so that saliva can flow out from the through holes, thereby avoiding oral hygiene problems caused by accumulation.

[0091] Combination Figure 12-13 As shown, in some embodiments, the transition portion 205 is provided with a plurality of second through holes 2051 on the side wall contacting the lip and cheek muscles. The second through holes 2051 are provided to achieve air permeability of the covered portion and avoid saliva accumulation between the gums. The through holes on the transition portion 205 can also prevent saliva from accumulating between the transition portion 205 and the soft tissue, and avoid oral hygiene problems.

[0092] It can be understood that since the shell-shaped dental appliance in this embodiment covers part of the gums, the air permeability of the shell-shaped dental appliance can be increased by providing through holes, thereby avoiding the foreign body sensation caused by long-term compression of soft tissue when attached to the soft tissue.

[0093] Another embodiment of the present application also relates to a shell-shaped dental instrument. This embodiment is substantially the same as the above embodiment, with the main difference being that in the above embodiment, the shield 20 of the shell-shaped dental instrument is disposed on the labial side, while in this embodiment, shields 20 of various structures and positions are provided.

[0094] Specifically, the shield 20 in some embodiments is disposed on the cheek side, as shown in FIG. Fig.14As shown. The screen block 20 set on the cheek side has a similar structure to the screen block 20 set on the lip side, so the screen block 20 structure mentioned in the above embodiments can be combined in the design in this embodiment, such as the through hole structure on the screen block 20. Regardless of whether the setting position of the screen block 20 changes, a through hole can be set on the side wall that contacts the lip and cheek muscles. The through hole can be one or several holes distributed in an array, which will not be listed here one by one. For example, the avoidance structure for avoiding the lace can be designed as a concave structure or a spacing structure, which will not be listed here one by one, and its protection scope is within the protection scope of this application.

[0095] It can be understood that, in addition to the screen block 20 only provided on the lip side and the screen block 20 only provided on the cheek side in some of the above embodiments, the structure of the screen block 20 in some other embodiments can also include a screen block 20 provided on both the lip side and the cheek side, such as Fig.15 As shown, the monomer structure is similar and will not be described here. Further, when the shell-shaped dental instrument is manufactured by hot pressing film process, the dental model 5 used can be as follows: Fig.16 shown.

[0096] In addition, it should be noted that a plurality of discrete shields 20 are provided in the above embodiment, some of which are provided on the labial side and some of which are provided on the buccal side. It is understandable that in actual application, a continuously provided integral shield 20 may also be included, such as providing a large shield 20, whose mesiodistal length is greater than the length of 5 teeth, so that the shield 20 has a stronger integrity and a higher firmness.

[0097] Another embodiment of the present application also relates to a shell-shaped dental instrument. This embodiment is substantially the same as the above embodiment, with the main difference being that in this embodiment, the shield is disposed on the labial side of the shell-shaped body, and the shell-shaped dental instrument further comprises a buccal shield disposed in the posterior tooth area for blocking the buccal muscles.

[0098] Specifically, combined with Fig.21 , Fig. 22 and Fig.23As shown, in some embodiments, the connection position between the cheek shield 30 and the connected tooth receiving cavity is located in the gingival area, and a second gap 31 is provided between the lingual side surface 301 of the cheek shield 30 and the buccal outer surface 101 of the tooth receiving cavity at the corresponding position. The geometric dimensions of the second gap 31 satisfy that: when worn, after the cheek shield 30 contacts the buccal muscle, the lingual side surface 301 of the cheek shield 30 does not contact the outer surface 101 of the tooth receiving cavity. It should be noted that the second gap 31 can be a gap of uniform width, or a gap whose width changes with the contour of the dental instrument, or a gap whose width gradually widens from top to bottom. In actual application, it can be changed according to the structural requirements of the dental instrument, and will not be listed here one by one. Specifically, the width L2 of the second gap 31 in the buccal and lingual direction is greater than or equal to 2 mm, and less than or equal to 10 mm. It can be understood that if the width L2 of the second gap 31 in the buccal-lingual direction is uniform, then the width L2 can be a preset width value within the above range; if the width L2 of the second gap 31 in the buccal-lingual direction varies, then the variation range of the width L2 is also within the above range.

[0099] Furthermore, the thickness of the cheek shield 30 in the cheek-lingual direction in the present embodiment is L4, and the thickness L4 may refer to the distance between the labial side 301 and the cheek side 302 of the cheek shield 30. In some embodiments, the sum of the thickness L4 and the width L2 of the second gap 31 in the cheek-lingual direction is less than or equal to 10 mm. While ensuring the muscle barrier function of the cheek shield 30, the space occupied by the shell-shaped dental appliance in the oral cavity in the present embodiment is minimized.

[0100] It should be noted that in order to further ensure the muscle barrier effect of the cheek shield 30, the height of the cheek shield 30 covers at least 1 / 2 of the height of the crown of the corresponding position of the present jaw. The coverage height of the cheek shield 30 is limited to accurately achieve the muscle barrier effect. Specifically, in some embodiments, the height of the cheek shield 30 can cover more than the height of the crown of the present jaw. In some embodiments, the cheek shield 30 can also extend to the opposing jaw to at least partially cover the buccal side of the crown of the opposing jaw. In some embodiments, the cheek shield 30 can also extend to the opposing jaw to at least cover the buccal side of part of the gums of the opposing jaw. In addition, in some embodiments, the cheek shield 30 also extends in the direction of the vestibule groove of the present jaw to at least cover part of the gums of the present jaw. By covering part of the gums, it is achieved that the force can be dispersed to the gum areas of multiple teeth after being subjected to pressure, thereby minimizing the hindrance to tooth growth. It is also possible that the cheek shield 30 shown in the figure of this embodiment not only covers part of the gums of the present jaw, but also covers the buccal side of the crown of the opposing jaw. Its structure and size are flexible and can be actually selected according to the patient's oral data, and are not listed one by one here.

[0101] In addition, in order to increase the firmness of the cheek shield 30 and avoid damage during wearing, the cheek shield 30 in this embodiment has a built-in filler 303, which is a prefabricated resin block. The resin block can be printed and manufactured separately, and after processing the shell-shaped dental instrument, it is placed in the cavity structure of the cheek shield 30, or the resin block can be combined with the main body of the dental model in the lamination process, and when the lamination is completed and the film is pried, the resin block is separated from the main body of the dental model, and the resin block is left in the oral structure of the cheek shield 30.

[0102] Continue to explain, combined Fig.24a , Figure 24b and Fig.25 As shown, in addition to the cheek shield 30 of the above-mentioned structure, the cheek shield 30 in other embodiments can be a cavity structure formed by the buccal side of the tooth receiving cavity protruding toward the buccal side, and a third gap is provided between the cavity structure and the buccal side of the corresponding tooth. That is to say, the third gap is the gap between the buccal inner wall 301 of the cavity structure and the buccal side 101 of the corresponding tooth, and at the same time, the tooth receiving cavity in the posterior tooth area is connected to the cavity structure of the cheek shield 30. By setting the third gap, the thickness of the cavity structure is limited, so that after wearing, the contact between the buccal muscles and the corresponding teeth can be blocked, and the pressure of the buccal muscles on the posterior teeth inward can be reduced, so that the posterior teeth can grow normally in the buccal and lingual directions. Furthermore, the thickness L3 of the third gap along the buccal and lingual directions is greater than or equal to 3 mm, and less than or equal to 10 mm. The thickness range is set so that the muscle blocking function of the lip-cheek shield is accurately implemented to avoid interfering with the lip closing action.

[0103] In addition, in this embodiment, the buccal shield 30 extends from 1 / 2 of the first premolar to 1 / 2 of the last tooth in the mesiodistal direction. Fig.25 As shown, it can be from the second premolar 105 to the 1 / 2 of the last tooth 106. A certain length range is limited to ensure that the cheek muscle is sufficiently blocked, while avoiding excessive length that affects comfort, and the distance between the last tooth of the posterior teeth and the cheek muscle is small, leaving this position open to further reduce the foreign body sensation in the mouth when worn. It can be understood that when the patient is a child and the teeth are deciduous teeth, the extension length of the cheek shield 30 in the mesiodistal direction is from the 1 / 2 of the first deciduous molar to the 1 / 2 of the last tooth, and its tooth position is no longer shown separately.

[0104] It should be further explained that, although the cheek shield 30 shown in the figure only covers the crown area, in actual application, the side of the cheek shield 30 toward the opposing jaw can be extended toward the opposing jaw until it covers the buccal side of the crown of the opposing jaw, or the side of the cheek shield 30 away from the opposing jaw can also be extended toward the vestibule groove of the present jaw to at least cover part of the gums of the present jaw. In some embodiments, part of the gums of the present jaw and the crown of the opposing jaw can also be covered at the same time, and the structure and size thereof are various and will not be listed one by one here.

[0105] It can be seen that the cheek shield 30 of various structures is provided in the present embodiment, which enriches the implementation forms of the cheek shield 30 in the shell-shaped dental device of the present application, and different structures can be selected in different application scenarios, which broadens the application scenarios of the present application and facilitates market promotion. It should also be noted that, under the premise of no contradiction, the shell-shaped dental device in the present embodiment can be combined with other structural limitations in the above-mentioned embodiments to further realize other structural combinations.

[0106] Another embodiment of the present application also relates to a shell-shaped dental device. The shell-shaped dental device in this embodiment is worn on the upper jaw. At the same time, the shell-shaped dental device in this embodiment may also include a palatal arch arranged on the lingual side of the posterior teeth area of ​​the shell-shaped body 10, and the two ends of the palatal arch are partially connected to the shell-shaped body 10 respectively; when worn, the palatal arch induces buccal movement of the teeth in the posterior teeth area through deformation.

[0107] Specifically, the material of the upper palate arch 40 in this embodiment can be a polymer material that is the same as or similar to the shell-shaped dental instrument. When connected to the shell-shaped body 10, it can be fixedly connected by bonding, welding, etc., or it can be manufactured by an integral molding method, such as Fig.17 As shown, its manufacturing process is roughly the same as the processing technology of the original shell-shaped dental instrument, which will not be described in detail here.

[0108] In other embodiments, the material of the palatal arch 40 may be metal, such as an expansion spring, etc., and when connected to the shell body 10, it may be fixedly connected by bonding, welding, etc., or may be detachably connected. Fig.18 As shown, a tongue button is provided on the tongue side of the posterior tooth area of ​​the shell-like body 10, and the expansion spring includes an arc-shaped frame formed by bending a single metal wire, and buckles are formed on both sides of the arc-shaped frame, which are respectively bent to form buckles, and are respectively fixed to the tongue buttons on the tongue side of both sides of the shell-like body to attach the expansion spring to the shell-like body. In addition, other functional elements can be provided on the arc-shaped frame according to the needs of the doctor, such as a tongue training element for tongue taste guidance, and its structure can be similar to that of the existing tongue training element, which will not be repeated here.

[0109] Another embodiment of the present application also relates to a shell-shaped dental appliance, which is worn on the upper jaw. At the same time, the shell-shaped dental appliance in this embodiment also includes a tongue protrusion arranged on the tongue side of the anterior teeth area of ​​the shell-shaped body for inducing the tongue tip to adjust from a first position to a second position. The tongue protrusion structure is provided to assist in tongue position adjustment, so as to facilitate synchronous training of tongue muscles during orthodontics and achieve accurate placement of the tongue tip.

[0110] Specifically, combined with Fig.26As shown, the tongue protrusion 50 is a geometric structure protruding toward the tongue body. The height of the tongue protrusion 50 is consistent with the treatment plan for inducing the tongue tip to adjust from a first position to a second position. When the tongue body is in an abnormal position, the tongue protrusion can adjust the tongue tip to a normal position.

[0111] Furthermore, in the present embodiment, in addition to providing a tongue protrusion at the lingual gingival margin or adjacent to the lingual gingival margin in the anterior tooth area of ​​the shell-like body 10, a reinforcement portion 501 may also be provided on both sides of the tongue protrusion. The reinforcement portion 501 spans over at least a portion of the surface of the palatal fold. The reinforcement portion 501 can increase the connection area between the tongue protrusion and the shell-like body, enhance the integrity of the tongue protrusion 50 and the shell-like body, and prevent deformation of the contact between the tongue tip and the tongue correction portion when the tongue tip position is induced and adjusted, thereby affecting the deformation of the shell-like body along the dental arch direction, resulting in the alignment of the teeth being affected.

[0112] Further explanation: the tongue protrusion 50 in the shell-shaped dental appliance of this embodiment can be combined with the upper palate arch 40 in the previous embodiment to form a Fig. 27 The shell-shaped dental appliance is shown.

[0113] Another embodiment of the present application relates to a shell-shaped dental instrument set, such as Fig.19 As shown, it specifically includes a first type of shell-shaped dental appliance for wearing on a first jaw of a user, and a second type of shell-shaped dental appliance for wearing on a second jaw of the user. When the first jaw is the upper jaw of the user, the second jaw is the lower jaw of the patient.

[0114] Specifically, the first type of shell-shaped dental instrument can be any of the shell-shaped dental instruments in the above embodiments, and the second type of shell-shaped dental instrument can be provided with a shield 20 structure or can be provided without a shield 20 structure, which is determined specifically according to the user's correction needs and the doctor's requirements.

[0115] In other embodiments, the first jaw may be the patient's upper jaw, and the corresponding second jaw may be the patient's lower jaw, and their structures are similar and will not be listed one by one here.

[0116] It should be further explained that the tooth receiving cavity in the posterior tooth area of ​​the second type of shell-shaped dental appliance in this embodiment has a geometric structure for moving the accommodated tooth from a first position to a second position, and the second position is located on the buccal side of the first position. In other words, the tooth receiving cavity in the posterior tooth area of ​​the second type of shell-shaped dental appliance is enlarged so that there is a gap between the buccal side and the buccal side of the accommodated tooth after wearing, so as to avoid blocking the accurate growth of the tooth in the buccal and lingual direction.

[0117] It is worth mentioning that in some other embodiments, the tooth receiving cavity in the anterior tooth area of ​​the second type of shell-shaped dental apparatus has a geometric structure for moving the accommodated tooth from a first position to a second position, and the second position is located sagittally posterior to the first position. It is understandable that whether to set a gap specifically can be related to the actual situation of the patient and the correction plan, which can be confirmed by the doctor and will not be listed here one by one.

[0118] Another embodiment of the present application relates to a shell-shaped dental instrument set. Compared with the above embodiment, the main difference is that: in the above embodiment, the first type of shell-shaped dental instrument worn on the first jaw can be provided with shields covering the labial side and the buccal side respectively; while in this embodiment, the shield 20 of the first type of shell-shaped dental instrument is arranged on the labial side of the shell-shaped body 10, and the shield 20 of the second type of shell-shaped dental instrument included is arranged on the buccal side of the appliance 4 (such as Fig. 20 As shown). When the upper and lower jaw dental appliances are worn at the same time, the lip muscles and cheek muscles can be completely blocked. It can be understood that the above example takes the first jaw as the upper jaw and the second jaw as the lower jaw. In other embodiments, the first jaw can also be the lower jaw and the second jaw can be the upper jaw, which will not be listed here one by one.

[0119] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A shell-shaped dental instrument, characterized in that: include: The shell-like body is an integrated shell-like body and is formed with a tooth receiving cavity that can accommodate multiple teeth of the jaw, and a shield is arranged on the labial side and / or buccal side of the shell-like body. The shield is a cavity structure with an opening toward the gums formed by extending from the gingival end of the shell-like body to the vestibule groove of the jaw. The thickness of the shield in the labial and lingual direction at least satisfies: when worn, the shield can block the contact between the lip muscles and / or cheek muscles and the corresponding teeth.

2. The shell-shaped dental instrument according to claim 1, characterized in that: The height of the gingival area covered by the shield in the vertical direction is greater than or equal to 1 / 3 of the vertical height of the corresponding gingiva.

3. The shell-shaped dental instrument according to claim 1, characterized in that: The shield at most reaches the bottom of the vestibule groove away from the tooth side.

4. The shell-shaped dental instrument according to claim 3, characterized in that: The contour of the shield away from the teeth is consistent with the contour of the bottom of the vestibule groove at the corresponding position.

5. The shell-shaped dental instrument according to claim 1, characterized in that: The shell-shaped dental instrument is provided with an avoidance structure for avoiding the frenulum.

6. The shell-shaped dental instrument according to claim 5, characterized in that: The avoidance structure is a concave structure on the side of the shield away from the teeth; or, there are multiple shields, and the avoidance structure is the spacing space between two adjacent shields.

7. The shell-shaped dental instrument according to claim 1, characterized in that: The thickness of the barrier along the lip and tongue direction is greater than or equal to 3 mm and less than or equal to 10 mm.

8. The shell-shaped dental instrument according to claim 1, characterized in that: The screen is provided with a plurality of through holes on the side wall contacting the lip and cheek muscles.

9. The shell-shaped dental instrument according to claim 1, characterized in that: The length of the shield in the mesiodistal direction is greater than or equal to the length of the patient's smallest tooth in the mesiodistal direction.

10. The shell-shaped dental instrument according to claim 1, characterized in that: There are multiple screen blocks, and a transition portion is provided between at least two adjacent screen blocks. The vertical height of the transition portion gradually decreases from the side close to the screen block to the side away from the screen block, and the maximum vertical height of the transition portion is lower than the highest height of the screen block.

11. The shell-shaped dental instrument according to claim 10, characterized in that: The contour of the transition portion toward the gum side is substantially the same as the labial and buccal side of the gums at the corresponding position. When worn, the transition portion adheres to the gums at the corresponding position.

12. The shell-shaped dental instrument according to claim 10, characterized in that: The transition portion is provided with a plurality of through holes on the side wall contacting the lip and cheek muscles.

13. The shell-shaped dental device according to claim 1, characterized in that: The shields are symmetrically distributed along the tooth midline.

14. The shell-shaped dental device according to claim 1, characterized in that: A first gap is provided between at least a portion of the tooth receiving cavity in the shell-shaped body and the labial and buccal sides of the corresponding tooth received therein to provide space for the corresponding tooth to grow toward the labial and buccal sides.

15. The shell-shaped dental device according to claim 1, characterized in that: The shield is arranged on the labial side of the shell-shaped body, and the shell-shaped dental instrument also includes a buccal shield arranged in the posterior tooth area for blocking the buccal muscle. The connection position between the buccal shield and the connected tooth receiving cavity is located in the gingival area, and a second gap is provided between the lingual side surface of the buccal shield and the buccal outer surface of the tooth receiving cavity at the corresponding position. The geometric dimensions of the second gap meet the following requirements: when worn, after the buccal shield contacts the buccal muscle, the lingual side surface of the buccal shield does not contact the outer surface of the tooth receiving cavity.

16. The shell-shaped dental device according to claim 15, characterized in that: The buccal shield covers at least 1 / 2 of the height of the crown of the tooth at the corresponding position of the jaw.

17. The shell-shaped dental device according to claim 15, characterized in that: The width of the second gap in the labial and lingual direction is greater than or equal to 2 mm and less than or equal to 10 mm.

18. The shell-shaped dental device according to claim 15, characterized in that: The cheek shield has a built-in filler, which is a prefabricated resin block.

19. The shell-shaped dental device according to claim 1, characterized in that: The shield is arranged on the lip side of the shell-shaped body. The shell-shaped dental instrument also includes a cheek shield arranged in the posterior tooth area for blocking the cheek muscle. The cheek shield is a cavity structure formed by the buccal side of the tooth receiving cavity protruding toward the buccal side. A third gap is provided between the cavity structure and the buccal side of the corresponding tooth.

20. The shell-shaped dental device according to claim 15 or 19, characterized in that: The buccal shield extends toward the opposing jaw to at least partially cover the buccal side of the opposing jaw's tooth crown.

21. The shell-shaped dental device according to claim 15 or 19, characterized in that: The buccal guard extends toward the vestibule groove of the present jaw and covers at least part of the gums of the present jaw.

22. The shell-shaped dental device according to claim 15 or 19, characterized in that: The buccal shield extends in the mesiodistal direction from 1 / 2 of the first premolar to 1 / 2 of the last tooth, or from 1 / 2 of the first deciduous molar to 1 / 2 of the last tooth.

23. The shell-shaped dental device according to claim 1, characterized in that The shell-shaped dental appliance is a shell-shaped dental appliance worn on the upper jaw, and also includes a palatal arch arranged on the lingual side of the posterior teeth area of ​​the shell-shaped body, and the two ends of the palatal arch are partially connected to the shell-shaped body respectively; when worn, the palatal arch induces buccal movement of the teeth in the posterior teeth area through deformation.

24. The shell-shaped dental device according to claim 1 or 23, characterized in that: The shell-shaped dental appliance is a shell-shaped dental appliance worn on the upper jaw, and further comprises a tongue protrusion arranged on the tongue side of the front teeth area of ​​the shell-shaped body and used for inducing the tongue tip to adjust from a first position to a second position.

25. A shell-shaped dental instrument set, characterized in that: It comprises a first type of shell-shaped dental appliance for wearing on a first jaw of a user, wherein the first type of shell-shaped dental appliance is a shell-shaped dental appliance as described in any one of claims 1 to 24, and also comprises a second type of shell-shaped dental appliance for wearing on a second jaw of the user.

26. The shell-shaped dental instrument set according to claim 25, characterized in that: The second type of shell-shaped dental appliance is a shell-shaped dental appliance as claimed in any one of claims 1 to 24.

27. The shell-shaped dental instrument set according to claim 25, characterized in that: The tooth receiving cavity in the posterior tooth area of ​​the second type of shell-shaped dental appliance has a geometric structure for moving the accommodated tooth from a first position to a second position, and the second position is located on the buccal side of the first position.

28. A shell-shaped dental instrument set, characterized in that: It comprises a first type of shell-like dental instrument and a second type of shell-like dental instrument for being worn on a first jaw and a second jaw of a user, respectively, the first type of shell-like dental instrument and the second type of shell-like dental instrument being the shell-like dental instrument as described in any one of claims 1 to 13, 23, and 24 above, the shield of the first type of shell-like dental instrument being arranged on the labial side of the shell-like body, and the shield of the second type of shell-like dental instrument being arranged on the buccal side of the shell-like body.

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