Shell-shaped dental instrument

Abstract

The utility model discloses a shell dental instrument for snore stopping, including the first shell body of accommodating patient's upper jaw teeth and the first lock catch of setting in the buccal side surface of first shell body rear tooth area, the second shell body of accommodating patient's lower jaw teeth and the second lock catch of setting in the buccal side surface of second shell body rear tooth area, wherein, first lock catch and second lock catch are located in the same side of first shell body and second shell body, first lock catch includes first guide surface, and second lock catch includes second guide surface, when wearing, first lock catch and second lock catch interact, and the lower jaw of patient is moved to the predetermined position of the patient airway distraction forward to the sagittal direction, to suppress the patient snore, at the predetermined position, first guide surface and second guide surface contact, first guide surface and second guide surface slide relatively in the mode of line contact or point contact, to make the patient snore of suppression can be in a predetermined area within the activity of lower jaw.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, more specifically to the field of dental instruments, and particularly to a shell-shaped dental instrument for snoring prevention. Background Technology

[0002] Snoring is a common sleep phenomenon. To date, most people still consider snoring commonplace and take it for granted. Some even see snoring as a sign of sound sleep. In fact, snoring is a major health hazard. Snoring can lead to adverse consequences such as daytime sleepiness, fatigue, poor concentration, headaches, and decreased work performance. Severe snoring is often accompanied by sleep apnea syndrome, which seriously affects the patient's health.

[0003] There are many causes of snoring, with the most common being airway obstruction. The nasal cavity and oral cavity are both connected to the airway. When a person is asleep, airway obstruction can occur due to muscle relaxation, jaw retraction, and tongue falling back. People in this situation often breathe through their mouths to allow air to pass. One way to open the airway is to pull the jaw forward, increasing the muscle tension in the throat, tongue, and soft palate, thus opening the airway that has collapsed due to muscle relaxation during sleep. Therefore, for snoring caused by this reason, the method to stop snoring is to pull the jaw forward to the ideal position to open the airway.

[0004] In recent years, in the field of orthodontics, invisible dental instruments have become increasingly popular due to their aesthetic appeal and convenience. Orthodontic manufacturers have also attempted to combine anti-snoring devices with invisible dental instruments. In existing technologies, invisible dental instruments used to treat snoring often aim to guide and hold the patient's mandible forward until the airway is open, ensuring effective snoring suppression. For example, the anti-snoring dental instrument provided in Chinese patent CN202420431255.2 uses a limiting cavity with at least two sidewalls in the mesiodistal direction to restrict the movement of the mounting part in the sagittal direction, thereby further ensuring its snoring suppression effect. While this structure that restricts the movement of the upper and lower jaws helps to ensure the effectiveness of suppressing snoring, it also brings some adverse effects. For example, long-term nighttime wear may cause fatigue of the masticatory muscles and discomfort of the temporomandibular joint. Also, many snoring patients have other oral movements of varying degrees during sleep (large snoring amplitude causes repeated opening and closing of the upper and lower jaws, nighttime teeth grinding, sleep talking, etc.). In this case, the structure that restricts the movement of the patient's lower jaw may cause the patient to wake up gasping for breath at night, resulting in a poor user experience and hindering market promotion. Utility Model Content

[0005] The technical problem solved by this invention is to overcome the defects of the existing technology and provide a stable and reliable shell-shaped dental instrument for snoring that can slide flexibly within a leading position range that can suppress snoring to improve patient comfort.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A shell-shaped dental instrument for snoring prevention includes: a first shell-shaped body for receiving a patient's maxillary teeth and a first locking member disposed on the buccal surface of the first shell-shaped body in the posterior tooth region; a second shell-shaped body for receiving a patient's mandibular teeth and a second locking member disposed on the buccal surface of the second shell-shaped body in the posterior tooth region; wherein the first locking member and the second locking member are located on the same side of the first shell-shaped body and the second shell-shaped body; the first locking member includes a first guide surface, and the second locking member includes a second guide surface; when worn, the first locking member and the second locking member interact to move the patient's mandible sagittally forward to a predetermined position that opens the patient's airway to suppress snoring; at the predetermined position, the first guide surface and the second guide surface are in contact; the first guide surface and the second guide surface slide relative to each other in a line contact or point contact manner, so that the mandible can move within a predetermined area while suppressing the patient's snoring.

[0008] The technical solution of this application addresses two key issues. First, by having the first and second locking components positioned on the same side, their interaction allows the patient's mandible to be moved sagittally forward to a predetermined position that opens the airway, thus ensuring the therapeutic effect of suppressing snoring. Second, by configuring the shell-shaped dental instrument so that the mandible can move within a predetermined area during wear, it avoids masticatory muscle fatigue and temporomandibular joint discomfort caused by the mandible remaining in one position for extended periods, and accommodates the patient's nighttime mouth opening and other oral activities. Third, by configuring the first guide surface and the first guide surface to slide in line or point contact, the frictional resistance of line or point contact sliding is much lower than that of surface contact sliding. This reduces the resistance to mandibular movement during sleep, making mandibular movement more flexible and comfortable, improving wearing comfort and long-term compliance, and facilitating the achievement of therapeutic effects. This application features a simple structure, eliminating the need for complex adjustment mechanisms, reducing manufacturing costs, and facilitating use by clinicians and patients.

[0009] Preferably, the first locking member includes a first fixing part, a first connecting part, and a first protrusion connected in sequence. The first locking member is fixed to the first shell-shaped body through the first fixing part. The first protrusion protrudes in a proximal direction at one end of the first connecting part, and the first fixing part protrudes in a proximal direction at the other end of the first connecting part opposite to the first protrusion. The first fixing part, the first connecting part, and the first protrusion enclose a first opening space with an opening in a proximal direction. The surface of the first connecting part facing the proximal side forms the first guide surface. The second locking member includes a second connecting part and a second protrusion that cooperates with the first opening space. The second locking member is fixed to the second shell-shaped body through one end of the second connecting part. The second protrusion protrudes in a distal direction at the other end of the second connecting part. The surface of the second protrusion facing the distal side forms the second guide surface. The outer contour dimension of the second protrusion is smaller than the inner contour dimension of the first opening space. Within the first opening space, the second guide surface can slide along the first guide surface in a line contact manner. This application ensures the degree of freedom of sliding by setting the dimensional difference between the outer contour dimension of the second protrusion and the inner contour dimension of the first opening space; at the same time, the design of the first opening space can prevent the second protrusion from falling off, ensuring the connection stability between the first locking member and the second locking member, thereby further guaranteeing the effect of treating snoring.

[0010] Preferably, the lower surface of the first fixing part facing the opposing jaw forms a first limiting surface. When the second protrusion slides along the first guide surface to one end of the first guide surface near the first fixing part, the upper surface of the second protrusion facing the opposing jaw abuts against the first limiting surface. By setting the first limiting surface, the sliding endpoint of the second protrusion can be limited, ensuring that the sliding of the second protrusion is always kept within the range that can open the patient's airway, thereby ensuring the effectiveness of snoring treatment.

[0011] Preferably, the first guide surface is an inclined plane, and the second guide surface is a first arc surface, with the first arc surface convex outwards toward the first guide surface. The second guide surface can slide along the first guide surface in a line contact manner. The line contact between the convex arc surface and the inclined plane significantly reduces the sliding contact area and lowers frictional resistance.

[0012] Preferably, the first guide surface is set at a preset angle α with the horizontal plane, wherein 30°≤α<45° or α=45° or 45°<α≤60° or 120°≤α<135° or α=135° or 135°<α≤150°. This inclined plane design within such an angle range, on the one hand, ensures that the displacement difference between the vertical and sagittal directions of the second protrusion is not too large, thus ensuring a compact structure of the first locking component, avoiding a noticeable foreign body sensation caused by a large structure, and also saving manufacturing materials and reducing costs; especially when α=45° or α=135°, the displacement of the second protrusion in the vertical and sagittal directions is basically the same, resulting in a more compact structure and significantly improved patient comfort; on the other hand, it balances sliding efficiency and sliding resistance, and allows the second guide surface to disperse contact stress during online contact sliding, avoiding local pressure pain.

[0013] Preferably, the first guide surface is configured as a second arc surface, with the center of curvature of the second arc surface located near the middle side of the first connecting portion; the second guide surface is configured as a third arc surface, wherein the bending directions of the second and third arc surfaces are consistent, and the curvature of the third arc surface is greater than that of the second arc surface, allowing the second guide surface to slide along the first guide surface in a line contact manner. The dual-arc configuration of the first and second guide surfaces, through the difference in curvature, guides smoother line contact sliding, avoids jamming during sliding, and further improves comfort.

[0014] Preferably, the projection of the proximal end of the second arc surface onto the horizontal plane is located mesial to the projection of the distal end of the second arc surface onto the horizontal plane. This arrangement ensures that the path of mandibular sliding more closely matches the physiological movement trajectory.

[0015] Preferably, the second locking member further includes a second fixing part, which is disposed on the second connecting part at the end opposite to the second protrusion. The second locking member is fixed to the second shell-shaped body through the second fixing part. The second protrusion, the second connecting part, and the second fixing part are sequentially connected and enclose a second opening space, with the opening of the second opening space facing the distal direction. When worn, the second protrusion is accommodated in the first opening space, and the first protrusion is accommodated in the second opening space. The second guide surface slides along the first guide surface in a line contact manner, while simultaneously causing the surface of the first protrusion facing the mesial side to slide along the surface of the second guide surface facing the distal side in a line contact manner. Through this bidirectional design of the first and second opening spaces, when in contact, the first and second protrusions are interlocked in each other's opening spaces, forming a bidirectional constraint in the mesial and distal directions, enhancing stability and preventing mesial and distal dislocation. At the same time, the bidirectional symmetrical sliding of the second protrusion along the first guide surface and the first protrusion along the second guide surface ensures that the upper and lower jaws are evenly stressed during sliding, improving comfort.

[0016] Preferably, the first locking member includes a protruding post extending away from the buccal surface of the first shell-shaped body, the protruding post being positioned on the first shell-shaped body near the anterior teeth; the second locking member includes a hook portion, a connector, and a mounting portion sequentially connected and hooking onto the protruding post on the same side, the second locking member being movably connected to the second shell-shaped body near the posterior teeth via the mounting portion, the hook portion having an opening structure facing distally, the surface of the protruding post contacting the hook portion forming the first guide surface, the surface of the hook portion contacting the protruding post forming the second guide surface, the outer contour dimension of the protruding post being smaller than the inner contour dimension of the opening structure; wherein, the second guide surface can slide along the first guide surface in a line contact manner. Thus, different anti-snoring device structures are provided, offering clinicians and patients a variety of flexible options, with the degree of freedom of sliding ensured by the dimensional difference between the outer contour dimension of the protruding post and the inner contour dimension of the opening structure.

[0017] Preferably, the first guide surface is arc-shaped, and the second guide surface is an inclined plane, allowing the first guide surface to slide along the second guide surface in a line contact manner. The line contact between the arc surface and the inclined plane significantly reduces the sliding contact area and lowers frictional resistance.

[0018] Preferably, the first guide surface is a fourth arc surface, and the second guide surface is a fifth arc surface, with the center of curvature of the fifth arc surface located on the far-middle side of the hook portion; wherein the curvature directions of the fourth and fifth arc surfaces are consistent, and the curvature of the fourth arc surface is greater than that of the fifth arc surface, allowing the first guide surface to slide along the second guide surface in a line contact manner. The double arc surface configuration of the first and second guide surfaces, through the difference in curvature, guides smoother line contact sliding.

[0019] Preferably, the first locking member includes a stop portion, a connecting body, and a fixing portion connected in sequence. The first locking member is movably connected to the first shell-shaped body at a position near the posterior teeth via the fixing portion. The second locking member includes a protrusion extending away from the buccal surface of the second shell-shaped body and is positioned near the anterior teeth of the second shell-shaped body. The stop portion has a cavity with an opening facing mesially. The surface of the stop portion that contacts the protrusion forms the first guide surface, and the surface of the protrusion that contacts the stop portion forms the second guide surface. The outer contour dimension of the protrusion is smaller than the inner contour dimension of the cavity, wherein the second guide surface can slide along the first guide surface in a line contact manner. This provides different anti-snoring device structures, offering clinicians and patients a variety of flexible options. The difference between the outer contour dimension of the protrusion and the inner contour dimension of the opening structure ensures the freedom of sliding.

[0020] Preferably, the first guide surface is an inclined plane, and the second guide surface is an arc surface, allowing the second guide surface to slide along the first guide surface in a line contact manner. The line contact between the arc surface and the inclined plane significantly reduces the sliding contact area and lowers frictional resistance.

[0021] Preferably, the first guide surface is a sixth arc surface, and the second guide surface is a seventh arc surface, wherein the curvature directions of the sixth and seventh arc surfaces are the same, and the curvature of the seventh arc surface is greater than that of the sixth arc surface, allowing the second guide surface to slide along the first guide surface in a line contact manner. The double-arc surface configuration of the first and second guide surfaces, through the difference in curvature, guides smoother line contact sliding.

[0022] Preferably, the first guide surface or the second guide surface has a plurality of protrusions at the point of line contact between them, allowing the first guide surface and the second guide surface to slide relative to each other in a point-contact manner. By adding protrusions to the first guide surface or the second guide surface to achieve point-contact sliding, the contact area during sliding is further reduced, resistance is further reduced, and comfort is further improved. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same numerical reference numerals are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0024] Figure 1 This is a schematic diagram of the structure of a shell-shaped dental orthodontic instrument according to Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a first locking member and a second locking member in Embodiment 1 of this utility model;

[0026] Figure 3 This is a schematic diagram of the first and second locking components in contact according to Embodiment 1 of this utility model;

[0027] Figure 4 This is a structural schematic diagram of another first locking member and a second locking member in Embodiment 1 of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of another first locking member and a second locking member in Embodiment 1 of this utility model;

[0029] Figure 6 This is a structural schematic diagram of a first locking element in Embodiment 1 of this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of a first locking member and a second locking member in Embodiment 2 of this utility model;

[0031] Figure 8 This is a schematic diagram of the structure of a first locking member and a second locking member in Embodiment 3 of this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of a first locking element in Embodiment 3 of this utility model;

[0033] Figure 10 This is a schematic diagram of another first locking element in Embodiment 3 of this utility model;

[0034] Figure 11 This is a schematic diagram of the structure of a first locking member and a second locking member in Embodiment 4 of this utility model;

[0035] Figure 12 This is a schematic diagram of the first and second locking components in contact according to Embodiment 4 of this utility model;

[0036] Figure 13 This is a schematic diagram of the structure of a shell-shaped dental orthodontic instrument in Embodiment 5 of this utility model;

[0037] Figure 14 This is a schematic diagram of the structure of a first locking member and a second locking member in Embodiment 5 of this utility model;

[0038] Figure 15 This is a schematic diagram of the structure of a first locking member and a second locking member in Embodiment Six of this utility model;

[0039] Figure 16 This is a schematic diagram of the structure of a shell-shaped dental orthodontic instrument in Embodiment 7 of this utility model;

[0040] Figure 17 This is a schematic diagram of the structure of a first locking member and a second locking member in Embodiment 7 of this utility model;

[0041] Figure 18 This is a structural schematic diagram of a first locking member and a second locking member in Embodiment 8 of this utility model. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of the invention. However, the technical solutions claimed by this utility model can be implemented even without these technical details and with various variations and modifications based on the following embodiments. The division of the various embodiments below is for ease of description and should not constitute any limitation on the specific implementation of this utility model.

[0043] The directional terms "up," "down," "left," and "right" used in this document refer to the directions shown in the accompanying drawings and do not imply any specific limitation. Unless otherwise explicitly stated or limited, the term "connection" in this document should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part of a structure. It can refer to a direct connection or an indirect connection through an intermediate medium.

[0044] In the various embodiments of this invention, the term "posterior tooth region" is defined according to the classification of teeth in the 2nd edition of *Introduction to Stomatology*, published by Peking University Medical Press, pages 36-38. It includes premolars and molars, teeth marked as 4-8 using the FDI notation, and teeth marked as 1-3 using the FDI notation for the anterior tooth region. The teeth in the anterior tooth region include the central incisors, lateral incisors, and canines.

[0045] As described in the background section, in existing technologies, invisible dental devices used to treat snoring often aim to guide and hold the patient's mandible forward to a position that allows the airway to open, thus ensuring the effectiveness of snoring suppression. However, anti-snoring devices that restrict the movement of the patient's mandible can have some adverse effects: for example, long-term nighttime wear may lead to fatigue of the masticatory muscles and discomfort of the temporomandibular joint; also, many snoring patients experience varying degrees of other oral movements during sleep (large snoring amplitude causing repeated opening and closing of the upper and lower jaws, nighttime teeth grinding, sleep talking, etc.). In such cases, structures that restrict the movement of the patient's mandible may cause the patient to wake up gasping for air at night, resulting in a poor user experience and hindering market promotion.

[0046] Based on this, this application provides a shell-shaped dental device for snoring prevention, comprising: a first shell-shaped body for accommodating a patient's maxillary teeth and a first locking member disposed on the buccal surface of the first shell-shaped body in the posterior tooth region; a second shell-shaped body for accommodating a patient's mandibular teeth and a second locking member disposed on the buccal surface of the second shell-shaped body in the posterior tooth region; wherein the first locking member and the second locking member are located on the same side of the first shell-shaped body and the second shell-shaped body; the first locking member includes a first guide surface, and the second locking member includes a second guide surface; when worn, the first locking member and the second locking member interact with each other. The function is to move the patient's mandible sagittally forward to a predetermined position to open the patient's airway. Specifically, the shell-shaped dental instrument for snoring of this application applies a sagittal forward force to keep the patient's mandible in a sufficiently forward predetermined position. When the mandible is in this predetermined position, it can open the patient's airway, thereby achieving the purpose of snoring cessation. At the predetermined position, the first guide surface and the second guide surface are in contact. The first guide surface and the second guide surface can slide relative to each other in a line contact manner, so that while suppressing the patient's snoring, the mandible can move within a predetermined area.

[0047] The technical solution of this application addresses two key aspects. First, by having the first and second locking components positioned on the same side, their interaction allows the patient's mandible to be moved sagittally forward to a predetermined position that opens the airway, thus ensuring the therapeutic effect of suppressing snoring. It should be noted that this predetermined position refers to a range within which the patient's mandible is guided forward during sleep to open the airway, suppressing snoring at any point. Second, within the predetermined position range for suppressing snoring, the first and second locking components allow for slight movement of the patient's mandible within the predetermined area. This avoids masticatory muscle fatigue and temporomandibular joint discomfort caused by the mandible remaining in one position for extended periods, or accommodates the patient's nighttime mouth opening and other oral activities. Furthermore, the first and second guiding surfaces are designed for line contact sliding. The frictional resistance of line contact sliding is much lower than that of surface contact sliding, reducing the resistance to mandibular movement during sleep, making mandibular movement more flexible and comfortable, improving wearing comfort and long-term compliance, and contributing to the achievement of therapeutic effects. This application eliminates the need for complex adjustment structures, achieving the therapeutic goal of suppressing snoring through a simple shell-shaped dental instrument. It also considers the patient's comfort and experience during nighttime wear, reducing manufacturing costs, facilitating use by clinicians and patients, improving patient compliance, and contributing to the achievement of treatment effects.

[0048] The following will provide a detailed explanation in conjunction with the illustrations. Example

[0049] Please refer to Figures 1 to 4 As shown, the shell-shaped dental instrument 100 for snoring provided in this application includes a first shell-shaped body 1 for accommodating the patient's maxillary teeth and a first locking member 3 disposed on the buccal surface of the posterior tooth region of the first shell-shaped body 1, and a second shell-shaped body 2 for accommodating the patient's mandibular teeth and a second locking member 4 disposed on the buccal surface of the posterior tooth region of the second shell-shaped body 2.

[0050] The first shell-shaped body 1 may not have orthodontic function, and its shape may be consistent with the layout of the patient's maxillary teeth. Alternatively, it may be an orthodontic aligner, configured to move the patient's maxillary teeth from the first tooth layout to the second tooth layout. The second shell-shaped body 2 may also not have orthodontic function, and its shape may be consistent with the layout of the patient's mandibular teeth. Alternatively, it may be an orthodontic aligner, configured to move the patient's mandibular teeth from the first tooth layout to the second tooth layout.

[0051] The first locking member 3 is disposed on the buccal surface of the posterior tooth region of the first shell-shaped body 1. The first locking member 3 includes a first fixing part 32, a first connecting part 33 and a first protrusion 34 connected in sequence. The first locking member 3 is fixed to the buccal surface of the posterior tooth region of the first shell-shaped body 1 by the first fixing part 32. The two ends of the first connecting part 33 are respectively connected to the first fixing part 32 and the first protrusion 34. The first protrusion 34 protrudes in the mesial direction at one end of the first connecting part 33. The first fixing part 32 protrudes in the mesial direction at the other end of the first connecting part 33 opposite to the first protrusion 34. The first fixing part 32, the first connecting part 33 and the first protrusion 34 protruding in the mesial direction together enclose a first opening space K1 with an opening in the mesial direction. The surface of the first connecting part 33 facing the mesial side forms a first guide surface 31.

[0052] The second locking member 4 is disposed on the buccal surface of the posterior tooth region of the first shell-shaped body 1, and is disposed on the same side as the first locking member 3. Specifically, when the first locking member 3 is disposed on the buccal surface of the left posterior tooth region of the first shell-shaped body 1, the second locking member 4 is disposed on the buccal surface of the left posterior tooth region of the second shell-shaped body 2; when the first locking member 3 is disposed on the buccal surface of the right posterior tooth region of the first shell-shaped body 1, the second locking member 4 is disposed on the buccal surface of the right posterior tooth region of the second shell-shaped body 2. It should be noted that, in order to consider the balance of the patient's left and right sides and more For effective snoring control, a set of locking devices (first locking device 3 and second locking device 4) can be provided on both the left and right sides of the first shell-shaped body 1 and the second shell-shaped body 2. It is understood that providing a set of locking devices (first locking device 3 and second locking device 4) only on the left side of the first shell-shaped body 1 and the second shell-shaped body 2, or providing a set of locking devices (first locking device 3 and second locking device 4) only on the left side of the first shell-shaped body 1 and the second shell-shaped body 2, can also guide the patient's jaw forward to a predetermined position that opens the airway during sleep, thereby inhibiting snoring.

[0053] The second locking member 4 includes a second connecting part 42 and a second protrusion 43. The second locking member 4 is fixed to the second shell-shaped body 2 through one end of the second connecting part 42. The second protrusion 43 protrudes in the distal direction and is disposed at the other end of the second connecting part 42. The second protrusion 43 cooperates with the first opening space K1. The outer contour dimension of the second protrusion 43 is smaller than the inner contour dimension of the first opening space K1. By setting the size difference between the outer contour dimension of the second protrusion 43 and the inner contour dimension of the first opening space K1, the degree of freedom of sliding is ensured. At this time, the surface of the second protrusion 43 facing the distal side forms a second guide surface 41.

[0054] When worn, the first locking member 3 and the second locking member 4 interact to move the patient's mandible sagittally forward to a predetermined position that opens the patient's airway, thereby suppressing snoring. At this predetermined position, the first guide surface 31 and the second guide surface 41 contact each other. Specifically, the second protrusion 43 is accommodated within the first opening space K1, and the second guide surface 41 abuts against the first guide surface 31. It should be noted that the predetermined position described in this application refers to a position where, during sleep, the patient's mandible is guided forward to open the patient's airway. This predetermined position is a range within which snoring can be suppressed at any position. Within this range, the second guide surface 41 can slide along the first guide surface 31 in a line contact manner, allowing the mandible to move within the predetermined area while suppressing snoring. Figure 4 As shown, the second protrusion 43 can slide within the area indicated by the first position W1 to the second position W2 within the first opening space K1.

[0055] In this application, the first fixing part 32 and the first protrusion 34 protruding from the first connecting part 33 in the mesial direction can limit the second protrusion 43 in the vertical direction, so as to prevent the second protrusion 43 from sliding excessively in the vertical direction and causing patient discomfort.

[0056] To further explain, the lower surface of the first fixing part 32 facing the opposing jaw forms a first limiting surface. When the second protrusion 43 slides along the first guide surface 31 to one end of the first guide surface 31 near the first fixing part 32, the upper surface of the second protrusion 43 facing the opposing jaw abuts against the first limiting surface. By setting the first limiting surface, the sliding endpoint of the second protrusion 43 can be restricted, ensuring that the sliding of the second protrusion 43 always remains within the range that can open the patient's airway, thereby guaranteeing the effectiveness of snoring treatment.

[0057] Preferably, the first limiting surface and the upper surface of the second protrusion 43 facing the opposing jaw can be in surface contact, which can improve the fit stability between the first locking member 3 and the second locking member 4, and also reduce local wear at the contact position, which is conducive to the realization of the orthodontic effect.

[0058] For further explanation, please refer to [link / reference]. Figure 3As shown, the first guide surface 31 is configured as a second arc surface, and the center of curvature of the second arc surface is located near the middle side of the first connecting portion 33. In some embodiments, the second arc surface is a segment arc surface of circle D1. In this case, the center of curvature of the second arc surface is the center D of circle D1, and the center D of circle D1 is located near the middle side of the first connecting portion 33. The second guide surface 41 is configured as a third arc surface, wherein the curvature directions of the second arc surface and the third arc surface are consistent. In some embodiments, the third arc surface can also be a segment arc surface of circle C1. In this case, the center of curvature of the third arc surface is the center C of circle C1, and both the center C and the center D are located near the middle side of the first connecting portion 33. The curvature of the third arc surface is greater than the curvature of the second arc surface, so that the second guide surface 41 can slide along the first guide surface 31 in a line contact manner. It should be noted that this embodiment only illustrates the second and third arc surfaces as segments of a circle, and does not limit the second and third arc surfaces to segments of a circle. The double arc surface setting of the first guide surface 31 and the second guide surface 41, and the smoother contact sliding by setting the curvature difference guide line, avoid the jamming during the sliding process and further improve the comfort. Furthermore, the projection position of the second arc surface near the tooth, that is, the end of the second arc surface adjacent to the first fixing part 32, on the horizontal plane S is indicated by A; the projection position of the second arc surface distal to the tooth, that is, the end of the second arc surface adjacent to the first protrusion 34, on the horizontal plane S is indicated by B, wherein projection position A is located on the mesial side of projection position B; when the patient's mandible is guided forward to the predetermined position range and the upper and lower jaws are stable, the upper surface of the first limiting surface and the second protrusion 43 facing the opposing jaw, the second protrusion 43 and the first guiding surface 31 abut at the first position W1 near the center, when the patient's mandible moves slightly, the patient's mandible can slide from the first position W1 near the center to the second position W2 far the center. Since the patient's mandible naturally tends to tilt backward during sleep at night, this setting is more in line with the patient's physiological movement trajectory; of course, with the patient's opening and closing mouth movements, the second protrusion 43 can slide freely back and forth between the first position W1 and the second position W2.

[0059] Furthermore, in other embodiments, the arcuate surface of the second guide surface 41 can also be configured as follows: Figure 5As shown, a protruding strip structure 411 extending towards the buccal and lingual direction is provided at the position where the second guide surface 41 contacts the first guide surface 31. With the patient's opening and closing of the mouth, the second guide surface 41 can freely slide back and forth between the third position W3 and the fourth position W4 via the protruding strip structure 411 through line contact. Alternatively, it can be an integral structure with the second guide surface 41, forming part of the second guide surface 41; or it can be a separate structure connected to the second guide surface 41 by bonding or welding. This configuration provides versatility for the design of the second guide surface 41.

[0060] It is understood that this application is not limited to the technical solution where projection position A is located near the midpoint of projection position B; please refer to [the relevant documentation / reference]. Figure 6 As shown, projection position A is located on the far-middle side of projection position B, which also allows the second protrusion 43 to slide along the first guide surface 31. Example

[0061] To achieve the purpose of this invention, this application also provides a shell-shaped dental instrument 100 for snoring prevention, please refer to the following: Figure 7 As shown. The difference between this embodiment and Embodiment 1 is that in this embodiment, the first guide surface 31 and the second guide surface 41 are configured to slide relative to each other in a point-contact manner. Point-contact sliding can further reduce the contact area between the first guide surface 31 and the second guide surface 41 during sliding, thereby reducing frictional resistance. This can reduce the resistance to the patient's mandibular movement during sleep, making mandibular movement more flexible and comfortable, improving wearing comfort and long-term use compliance, and facilitating the achievement of treatment effects. Specifically, several protrusions 5 can be provided on the second guide surface 41 at the position where it contacts the first guide surface 31; it is understood that in another embodiment, several protrusions (not shown) can also be provided on the first guide surface at the position where it contacts the second guide surface; both configurations allow the second guide surface to slide along the first guide surface in a point-contact manner. Example

[0062] To achieve the purpose of this invention, this application also provides a shell-shaped dental instrument 100 for snoring prevention, please refer to the following: Figures 8 to 10 As shown. The difference between this embodiment and Embodiment 1 is that the first guide surface 31 is set in an inclined plane, and the second guide surface 41 is set in a first arc surface. The first arc surface convexes outward toward the first guide surface 31, and the second guide surface 41 can slide along the first guide surface 31 in a line contact manner. In this way, the line contact between the convex arc surface and the inclined plane can significantly reduce the sliding contact area and reduce frictional resistance.

[0063] Furthermore, the first guide surface 31 is set at a preset angle α with the horizontal plane S, wherein 30°≤α<45° or α=45° or 45°<α≤60° or 120°≤α<135° or α=135° or 135°<α≤150°. This inclined plane design within such an angle range ensures that when the second protrusion 43 slides along the first guide surface 31, the displacement difference between the vertical and sagittal directions is not too large, thus ensuring a compact structural size for the first locking member 3, avoiding a noticeable foreign object feeling caused by a large structural size, and also saving manufacturing materials and reducing costs. When 30°≤α<45° or α=45° or 45°<α≤60°, the projection position of the proximal end of the first guide surface 31, i.e., the end of the first guide surface 31 adjacent to the first fixing part 32, on the horizontal plane S is indicated by A; the projection position of the distal end of the first guide surface 31, i.e., the end of the first guide surface 31 adjacent to the first protrusion 34, on the horizontal plane S is indicated by B, wherein projection position A is located mesial to projection position B. In some specific embodiments, the preset angle α between the first guide surface 31 and the horizontal plane S can be set to 30°, 40°, 50°, or 60°. Especially when α=45°, the displacement of the second protrusion 43 in the vertical and sagittal directions is basically the same, resulting in a more compact structural size and significantly improved patient comfort. On the other hand, it can balance sliding efficiency and sliding resistance, and enable the second guide surface 41 to disperse contact stress during line contact sliding, avoiding local pressure pain. When 120°≤α<135° or α=135° or 135°<α≤150°, the projection position of the proximal end of the first guide surface 31, i.e., the end of the first guide surface 31 adjacent to the first fixing part 32, on the horizontal plane S is indicated by A; the projection position of the distal end of the first guide surface 31, i.e., the end of the first guide surface 31 adjacent to the first protrusion 34, on the horizontal plane S is indicated by B, wherein projection position A is located distal to projection position B; in other specific embodiments, the preset angle α between the first guide surface 31 and the horizontal plane S can be set to 120°, 130°, 140°, or 150°. Especially when α=135°, the displacement of the second protrusion 43 in the vertical and sagittal directions is basically the same, the structural dimensions are more compact, and the patient comfort is significantly improved; on the other hand, it can balance the sliding efficiency and sliding resistance, and enable the second guide surface 41 to disperse contact stress during line contact sliding, avoiding local pressure pain.

[0064] The other technical solutions in this embodiment are the same as those in Embodiment 1. They can be used in conjunction with the technical solutions in this embodiment if they do not conflict with this embodiment. They will not be described again here. Example

[0065] To achieve the purpose of this invention, this application also provides a shell-shaped dental instrument 100 for snoring prevention, please refer to the following: Figure 11 and Figure 12 As shown. The difference between this embodiment and Embodiment 1 is that the second locking member 4 further includes a second fixing part 44, which is disposed on the end of the second connecting part 42 opposite to the second protrusion 43. In this case, the second locking member 4 is fixed to the second shell-shaped body 2 by the second fixing part 44. The second protrusion 43 protrudes from the second connecting part 42 in a distal direction, and the second fixing part 44 also protrudes from the second connecting part 42 in a distal direction. The protruding second fixing part 44, the protruding second protrusion 43, and the second connecting part 42 together enclose a second opening space K2. The opening of the second opening space K2 is oriented in a distal direction. The inner contour dimension of the second opening space K2 is larger than the outer contour dimension of the first protrusion 34 to ensure that the first protrusion also has sufficient sliding space.

[0066] When worn, the second protrusion 43 is accommodated within the first opening space K1, while the first protrusion 34 is accommodated within the second opening space K2. Simultaneously, the second guide surface 41 slides along the first guide surface 31 in a line-contact manner, and the surface of the first protrusion 34 facing the mesial side also slides along the surface of the second guide surface facing the distal side in a line-contact manner. This bidirectional design of the first opening space K1 and the second opening space K2 ensures that, upon contact, the first protrusion 34 and the second protrusion 43 interlock within each other's opening spaces, forming a bidirectional constraint in the mesial-distal direction, enhancing stability and preventing mesial-distal dislocation. Furthermore, the bidirectional symmetrical sliding of the second protrusion 43 along the first guide surface 31 and the first protrusion 34 along the second guide surface 41 ensures even force distribution on the upper and lower jaws during sliding, improving comfort.

[0067] The other technical solutions in this embodiment are the same as those in Embodiment 1. They can be used in conjunction with the technical solutions in this embodiment if they do not conflict with this embodiment. They will not be described again here. Example

[0068] To achieve the purpose of this invention, this application also provides a shell-shaped dental instrument 100 for snoring prevention, please refer to [reference needed]. Figure 13 and Figure 14As shown. The structures of the first locking member 3 and the second locking member 4 in this embodiment differ from those in Embodiment 1. Specifically, the first locking member 3 includes a protruding post 35 extending away from the buccal surface of the first shell-shaped body 1, and the protruding post 35 is located at the position of the first shell-shaped body 1 near the anterior teeth; a second locking member 4 is provided on the buccal surface of the posterior tooth region of the second shell-shaped body 2 corresponding to the protruding post 35 for hooking with the protruding post 35. The second locking member 4 includes a hook portion 45, a connector 46, and a mounting portion 47 connected in sequence, and the second locking member 4 is detached through the mounting portion 47. The hook portion 45 is movably connected to the second shell-shaped body 2 at the position near the posterior tooth. The hook portion 45 has an opening structure K3 with the opening facing distally. The surface of the protrusion 35 that contacts the hook portion 45 forms a first guide surface 31, and the surface of the hook portion 45 that contacts the protrusion 35 forms a second guide surface 41. The outer contour dimension of the protrusion 35 is smaller than the inner contour dimension of the opening structure K3, so as to provide space for the relative sliding of the first guide surface 31 and the second guide surface 41. The second guide surface 41 can slide along the first guide surface 31 in a line contact manner.

[0069] Furthermore, the end of the protruding post 35 near the first shell-shaped body 1 can be fixedly connected to the first shell-shaped body 1 by bonding or laser welding, or the protruding post 35 and the first shell-shaped body 1 can be integrally formed. The mounting portion 47 of the second locking member 4 has a first mounting surface connected to the second shell-shaped body 2, and the second shell-shaped body 2 has a second mounting surface at a position corresponding to the first mounting surface. The second mounting surface and the second mounting surface are fixed to the second shell-shaped body 2 by bonding or laser welding, and the geometry and edge contour of the second mounting surface are basically consistent with those of the first mounting surface.

[0070] Furthermore, the structure of the mounting part 47 satisfies the following condition: the second locking member 4 can rotate about the normal axis of the second mounting surface to realize the hooking and separation of the second locking member 4 and the protrusion 35.

[0071] To further explain, both the first guide surface 31 and the second guide surface 41 can be configured as arc surfaces. Specifically, the first guide surface 31 is configured as a fourth arc surface, and the second guide surface 41 is configured as a fifth arc surface. The center of curvature of the fifth arc surface is located on the far-middle side of the hook portion 45. The fourth and fifth arc surfaces have the same curvature direction, and the curvature of the fourth arc surface is greater than that of the fifth arc surface. The first guide surface 31 can slide along the second guide surface 41 in a line contact manner. This double-arc surface configuration of the first guide surface 31 and the second guide surface 41, and the smoother line contact sliding guided by the curvature difference, avoids jamming during sliding, further improving comfort.

[0072] The other technical solutions in this embodiment are the same as those in Embodiment 1. They can be used in conjunction with the technical solutions in this embodiment if they do not conflict with this embodiment. They will not be described again here. Example

[0073] To achieve the purpose of this invention, this application also provides a shell-shaped dental instrument 100 for snoring prevention, please refer to the following: Figure 15 As shown. The difference between this embodiment and Embodiment 5 is that the second guide surface 41 is arranged in an inclined plane shape, while the first guide surface 31 is arranged in an arc shape. The first guide surface 31 can slide along the second guide surface 41 in a line contact manner. In this way, the line contact between the outer convex arc surface of the protruding post 35 and the inclined plane of the second guide surface 41 can significantly reduce the sliding contact area and reduce frictional resistance.

[0074] In this embodiment, the technical solution and features of the inclined plane of the second guide surface 41 are the same as those of the inclined plane of the first guide surface 31 in Embodiment 1, and will not be repeated here.

[0075] Furthermore, the other technical solutions in this embodiment are the same as those in Embodiment 5. They can be used in conjunction with the technical solutions in this embodiment without conflicting with them. They will not be described in detail here. Example

[0076] To achieve the purpose of this invention, this application also provides a shell-shaped dental instrument 100 for snoring prevention, please refer to the following: Figure 16 and 17As shown. The structures of the first locking member 3 and the second locking member 4 in this embodiment differ from those in Embodiment 1. Specifically, the first locking member 3 includes a stop portion 36, a connecting body 37, and a fixing portion 38 connected in sequence. The first locking member 3 is movably connected to the first shell-shaped body 1 at the position near the posterior teeth via the fixing portion 38. The stop portion 36; The second locking member 4 includes a protrusion 48 extending away from the buccal surface of the second shell-shaped body 2, and is disposed at the position near the anterior teeth of the second shell-shaped body 2. The stop portion 36 has an opening facing The cavity K4 is positioned in the mesial direction. A first guide surface 31 is formed on the surface of the stop 36 that contacts the protrusion 48, and a second guide surface 41 is formed on the surface of the protrusion 48 that contacts the stop 36. When the patient's jaw is guided forward to a predetermined position that can open the airway, the protrusion 48 is accommodated within the cavity K4. The protrusion 48 is restricted in the distal direction by the stop 36. Specifically, the second guide surface 41 abuts against the first guide surface 31, thus keeping the patient's jaw in the predetermined position to open the airway and suppress snoring. Furthermore, the outer contour dimension of the protrusion 48 is smaller than the inner contour dimension of the cavity K4 to provide space for relative sliding of the first guide surface 31 and the second guide surface 41, wherein the second guide surface 41 can slide along the first guide surface 31 in a line contact manner.

[0077] Furthermore, both the first guide surface 31 and the second guide surface 41 can be configured as arc surfaces. Specifically, the first guide surface 31 is configured as a sixth arc surface, and the second guide surface 41 is configured as a seventh arc surface. The sixth and seventh arc surfaces have the same curvature direction, and the curvature of the seventh arc surface is greater than that of the sixth arc surface. The second guide surface 41 can slide along the first guide surface 31 in a line contact manner. This double-arc surface configuration of the first guide surface 31 and the second guide surface 41, and the smoother line contact sliding guided by the curvature difference, avoids jamming during sliding, further improving comfort.

[0078] Furthermore, the fixing portion 38 of the first locking member 3 has a first fixing surface connected to the first shell-shaped body 1. The first shell-shaped body 1 has a second fixing surface at a position corresponding to the first fixing surface. The first fixing surface and the second fixing surface are fixed to the first shell-shaped body 1 by bonding or laser welding. The geometry and edge contour of the second fixing surface are basically consistent with those of the first fixing surface. The end of the protrusion 48 near the second shell-shaped body 2 can be fixedly connected to the second shell-shaped body 2 by bonding or laser welding. Alternatively, the protrusion 48 and the second shell-shaped body 2 can be integrally formed.

[0079] Furthermore, the structure of the fixed connection part 38 satisfies the following condition: the first locking member 3 can rotate about the normal axis of the second fixed connection surface, so as to realize the hooking and separation of the first locking member 3 and the protrusion 48.

[0080] The other technical solutions in this embodiment are the same as those in Embodiment 1. They can be used in conjunction with the technical solutions in this embodiment if they do not conflict with this embodiment. They will not be described again here. Example

[0081] To achieve the purpose of this invention, this application also provides a shell-shaped dental instrument 100 for snoring prevention, please refer to the following: Figure 18 As shown. The difference between this embodiment and Embodiment Seven is that the first guide surface 31 is arranged in an inclined plane shape, and the second guide surface 41 is in an arc shape. The second guide surface 41 can slide along the first guide surface 31 in a line contact manner. In this way, the line contact between the outer convex arc surface of the protruding post 35 and the inclined plane of the second guide surface 41 can significantly reduce the sliding contact area and reduce frictional resistance.

[0082] In this embodiment, the technical solution and features of the inclined plane of the first guide surface 31 are the same as those of the inclined plane of the first guide surface 31 in Embodiment 1, and will not be repeated here.

[0083] Furthermore, the other technical solutions in this embodiment are the same as those in Embodiment 7. They can be used in conjunction with the technical solutions in this embodiment without conflicting with them. They will not be described in detail here.

[0084] It should be noted that the above embodiments can be freely combined as needed to form different new implementation schemes without causing contradictions. All implementation schemes formed by such combinations are within the protection scope of this application. In order to save space in the application text, they will not be described in detail here.

[0085] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the inventive principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this application.

[0086] Similarly, the above descriptions are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A shell-shaped dental instrument for snoring prevention, characterized in that, include: A first shell-shaped body for accommodating the patient's maxillary teeth and a first locking element disposed on the buccal surface of the first shell-shaped body in the posterior tooth region. A second shell-shaped body for accommodating the patient's mandibular teeth, and a second locking member disposed on the buccal surface of the second shell-shaped body in the posterior tooth region, and, The first locking member and the second locking member are located on the same side of the first shell-shaped body and the second shell-shaped body; The first locking member includes a first guide surface, and the second locking member includes a second guide surface; When worn, the first and second locking components interact to move the patient's mandible forward in a sagittal direction to a predetermined position that opens the patient's airway, thereby suppressing the patient's snoring; At the predetermined position, the first guide surface and the second guide surface are in contact; the first guide surface and the second guide surface slide relative to each other in a line contact or point contact manner, so that the mandible can move within a predetermined area while suppressing the patient's snoring.

2. The shell-shaped dental instrument for snoring prevention according to claim 1, characterized in that, The first locking member includes a first fixing part, a first connecting part, and a first protrusion connected in sequence. The first locking member is fixed to the first shell-shaped body through the first fixing part. The first protrusion protrudes in the proximal direction at one end of the first connecting part. The first fixing part protrudes in the proximal direction at the other end of the first connecting part opposite to the first protrusion. The first fixing part, the first connecting part, and the first protrusion together form a first opening space with an opening in the proximal direction. The surface of the first connecting part facing the proximal side forms the first guide surface. The second locking member includes a second connecting portion and a second protrusion that mates with the first opening space. The second locking member is fixed to the second shell-like body via one end of the second connecting portion. The second protrusion protrudes distally from the other end of the second connecting portion, and the surface of the second protrusion facing distally forms the second guide surface; and... The outer contour dimension of the second protrusion is smaller than the inner contour dimension of the first opening space; wherein, Within the first opening space, the second guide surface can slide along the first guide surface in a line contact manner.

3. The shell-shaped dental instrument for snoring prevention according to claim 2, characterized in that, The lower surface of the first fixing part facing the opposing jaw forms a first limiting surface. When the second protrusion slides along the first guide surface to one end of the first guide surface near the first fixing part, the upper surface of the second protrusion facing the opposing jaw abuts against the first limiting surface.

4. The shell-shaped dental instrument for snoring prevention according to claim 2, characterized in that, The first guide surface is an inclined plane, and the second guide surface is a first arc surface. The first arc surface convexes outward toward the first guide surface, and the second guide surface can slide along the first guide surface in a line contact manner.

5. The shell-shaped dental instrument for snoring prevention according to claim 4, characterized in that, The first guide surface is set at a preset angle α with the horizontal plane, wherein 30°≤α<45° or α=45° or 45°<α≤60° or 120°≤α<135° or α=135° or 135°<α≤150°.

6. The shell-shaped dental instrument for snoring prevention according to claim 2, characterized in that, The first guide surface is configured as a second arc surface, and the center of curvature of the second arc surface is located near the middle side of the first connecting part; the second guide surface is configured as a third arc surface, wherein the bending direction of the second arc surface and the third arc surface is the same, the curvature of the third arc surface is greater than the curvature of the second arc surface, and the second guide surface can slide along the first guide surface in a line contact manner.

7. The shell-shaped dental instrument for snoring prevention according to claim 6, characterized in that, The projection of the proximal end of the second arc surface onto the horizontal plane is located on the mesial side of the projection of the distal end of the second arc surface onto the horizontal plane.

8. The shell-shaped dental instrument for snoring prevention according to claim 2, characterized in that, The second fastener also includes a second fixing part, which is disposed on the second connecting part at one end opposite to the second protrusion. The second fastener is fixed to the second shell-shaped body by the second fixing part. The second protrusion, the second connecting part, and the second fixing part are connected in sequence and enclose a second opening space. The opening of the second opening space is oriented in the distal direction. When worn, the second protrusion is accommodated in the first opening space, and the first protrusion is accommodated in the second opening space. The second guide surface slides along the first guide surface in a line contact manner, while the surface of the first protrusion facing the proximal side also slides along the surface of the second guide surface facing the distal side in a line contact manner.

9. The shell-shaped dental instrument for snoring prevention according to claim 1, characterized in that, The first locking member includes a protruding post extending away from the cheek-side surface of the first shell-shaped body, the protruding post being positioned near the anterior tooth of the first shell-shaped body; the second locking member includes a hook portion, a connector, and a mounting portion sequentially connected and hooking onto the protruding post on the same side, the second locking member being movably connected to the second shell-shaped body near the posterior tooth via the mounting portion, the hook portion having an opening structure facing distally, the surface of the protruding post contacting the hook portion forming the first guide surface, the surface of the hook portion contacting the protruding post forming the second guide surface, the outer contour dimension of the protruding post being smaller than the inner contour dimension of the opening structure; wherein, the second guide surface is capable of sliding along the first guide surface in a line contact manner.

10. The shell-shaped dental instrument for snoring prevention according to claim 9, characterized in that, The first guide surface is arc-shaped, and the second guide surface is inclined plane-shaped. The first guide surface can slide along the second guide surface in a line contact manner.

11. The shell-shaped dental instrument for snoring prevention according to claim 9, characterized in that, The first guide surface is arranged in the form of a fourth arc surface, and the second guide surface is arranged in the form of a fifth arc surface. The center of curvature of the fifth arc surface is located on the far-middle side of the hook portion. The fourth arc surface and the fifth arc surface have the same curvature direction, the curvature of the fourth arc surface is greater than the curvature of the fifth arc surface, and the first guide surface can slide along the second guide surface in a line contact manner.

12. The shell-shaped dental instrument for snoring prevention according to claim 1, characterized in that, The first locking member includes a stop portion, a connecting body, and a fixing portion connected in sequence. The first locking member is movably connected to the first shell-shaped body at a position near the posterior teeth via the fixing portion. The second locking member includes a protrusion extending away from the buccal surface of the second shell-shaped body and is located at a position near the anterior teeth of the second shell-shaped body. The stop portion has a cavity with an opening facing mesially. The surface of the stop portion that contacts the protrusion forms the first guide surface, and the surface of the protrusion that contacts the stop portion forms the second guide surface. The outer contour dimension of the protrusion is smaller than the inner contour dimension of the cavity. The second guide surface can slide along the first guide surface in a line contact manner.

13. The shell-shaped dental instrument for anti-snoring according to claim 12, characterized in that, The first guide surface is an inclined plane, the second guide surface is an arc surface, and the second guide surface can slide along the first guide surface in a line contact manner.

14. The shell-shaped dental instrument for snoring prevention according to claim 12, characterized in that, The first guide surface is configured as a sixth arc surface, and the second guide surface is configured as a seventh arc surface. The bending directions of the sixth arc surface and the seventh arc surface are the same, the curvature of the seventh arc surface is greater than the curvature of the sixth arc surface, and the second guide surface can slide along the first guide surface in a line contact manner.

15. The shell-shaped dental instrument for snoring prevention according to claim 1, characterized in that, The first guide surface or the second guide surface has a plurality of protrusions at the contact point between them, and the first guide surface and the second guide surface can slide relative to each other in a point contact manner.

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