CN220459432U - Dental instrument for bite adjustment - Google Patents

Abstract

Embodiments of the present application provide a dental appliance for bite adjustment, comprising a first shell-like body accommodating maxillary teeth and a second shell-like body accommodating mandibular teeth, the lingual side of the anterior teeth area of the first shell-like body being provided with an adjustment portion for adjusting the vertical relationship of the maxillary and mandibular, the adjustment portion being at least partially connected at the lingual side of the anterior teeth area of the first shell-like body, the tooth receiving cavity of the second shell-like body for accommodating at least part of the anterior teeth area having a geometry for exerting a depressing force on the at least part of the anterior teeth area; when the device is worn, the adjusting part is adjacent to the surface of the mandibular anterior teeth to apply auxiliary depression force to the mandibular anterior teeth. The utility model provides a dental instrument for interlock adjustment can solve among the prior art and utilize flat guide structure to hold down the problem that reaction force made the upper jaw anterior tooth take place unexpected removal when the anterior tooth of lower jaw, makes the correction result more accurate stable.

Description

Dental instrument for bite adjustment

Technical Field

The embodiment of the application relates to the technical field of orthodontic treatment, in particular to a dental instrument for bite adjustment.

Background

The bad habit of the oral cavity is one of the most common causes in the misjaw deformity, and according to statistics of Beijing university of medical science, the deep jaw covering of the front teeth accounts for about 1/4 of the causes of various misjaw deformities, and the misjaw deformity caused by any one or two vertical dysplasias in the dental arches of the upper jaw and the lower jaw is represented by that the upper front teeth cutting edge covers more than one third of the length of the labial surface of the lower front teeth crown or the lower front teeth cutting edge is meshed with more than one third of the lingual side cutting edge of the upper front teeth crown, so that a patient is easy to bite the gingiva, leading to periodontitis diseases of the front teeth, facial joints and other diseases. In most malocclusion patients, correction of the deep jaw may be a primary step in the overall dental appliance, and opening the bite is critical to correcting the deep jaw.

In the prior art, a movable upper jaw appliance is generally adopted to keep the height of the alveolar bone of the front teeth unchanged, the height of the rear teeth is emphasized to be increased, jaw pads are adjusted one by one from the last tooth so as to enable the pair-by-pair teeth to be in extension contact, and after the rear teeth are increased, the lingual dislocation of the front teeth and the correction in the far rear teeth are carried out. There is also a method of setting a flat guide on the lingual side of the anterior maxillary dental region, but this method requires fixing a flat guide made of metal and resin to the maxilla, and thus, not only a phenomenon in which part of teeth are suspended after wearing the device, but also a certain influence is exerted on the chewing of the patient, and the foreign body sensation of the patient is strong. In the prior art, a flat guide structure is added to the invisible shell-shaped appliance to deeply cover the jaw, but the upper jaw movable appliance or the invisible shell-shaped appliance is fixed with the upper jaw front teeth through the flat guide structure, so that the lower jaw front teeth are depressed by the flat guide structure, the reaction force of the lower jaw front teeth depression force can be caused to act on the upper jaw front teeth through flat guide, and the upper jaw front teeth are influenced by unexpected force to affect the final correction effect.

Therefore, the structure improvement on the invisible appliance can not only avoid the influence of the flat guide structure on the anterior maxillary teeth, but also realize the depression effect of the anterior mandibular teeth.

Disclosure of Invention

An object of the embodiment of the application is to provide a dental instrument for bite adjustment, can solve among the prior art and utilize flat guide structure to hold down the problem that reaction force made the upper jaw anterior tooth take place unexpected removal when the anterior tooth of lower jaw, make the correction result more accurate stable.

To achieve the above object, embodiments of the present application provide a dental appliance for bite adjustment, including a first shell-like body accommodating maxillary teeth and a second shell-like body accommodating mandibular teeth, the lingual side of an anterior tooth zone of the first shell-like body being provided with an adjustment portion for adjusting a vertical relationship of the maxillary and mandibular, the adjustment portion being at least partially connected to the lingual side of the anterior tooth zone of the first shell-like body, a tooth receiving cavity of the second shell-like body for accommodating at least a portion of the anterior tooth zone having a geometry for exerting a depression force on the at least a portion of the anterior tooth zone; when the device is worn, the adjusting part is adjacent to the surface of the mandibular anterior teeth to apply auxiliary depression force to the mandibular anterior teeth.

Preferably, the height of the tooth receiving cavity of the second shell-shaped body for receiving at least part of the teeth of the front tooth area in the vertical direction is smaller than the height of the tooth crown of the tooth in the vertical direction.

Preferably, the height difference between the tooth accommodating cavity for accommodating at least part of the teeth in the front tooth area and the tooth crown accommodating cavity in the vertical direction is between 0.1mm and 0.2 mm.

Preferably, the method further comprises providing a hold down attachment to a surface of the cuspid or premolars adjacent to the at least part of the anterior teeth, the hold down attachment applying a vertically downward force to the second shell body to cause the second shell body to apply a hold down force to the at least part of the anterior teeth when worn.

Preferably, the surface of the depression accessory adjacent to the gingival end is a concave curved surface concavely formed towards the jaw direction.

Preferably, the second shell-shaped body is provided with a depression accommodating cavity which is consistent with the outline of the depression accessory at the position corresponding to the depression accessory.

Preferably, the concave curved surface applies a vertical downward force to the depressed receiving cavity when worn.

Preferably, the tooth receiving cavity of the second shell-like body receiving at least a portion of the teeth of the posterior region applies an elevating force to at least a portion of the teeth of the posterior region.

Preferably, the tooth receiving cavity of the first shell-like body receiving at least a portion of the teeth of the posterior region applies an elevating force to at least a portion of the teeth of the posterior region.

Preferably, the tooth-cleaning device further comprises a lifting accessory arranged on the buccal side of at least part of teeth in the posterior tooth area, wherein the length of the lifting accessory in the mesial-distal direction is 1/2-2/3 of the length of the corresponding tooth in the mesial-distal direction.

Preferably, the second shell-like body has a lifting accommodation cavity corresponding to the lifting position, the lifting accommodation cavity being in line with the contour of the lifting attachment, and when worn, the lifting attachment interacts with the lifting accommodation cavity so that the tooth provided with the lifting attachment is subjected to lifting force.

Preferably, the first shell-like body has a lifting accommodation cavity corresponding to the lifting position, the lifting accommodation cavity being in line with the contour of the lifting accessory, and when worn, the lifting accessory interacts with the lifting accommodation cavity so that the tooth provided with the lifting accessory is subjected to lifting force.

Preferably, the adjusting portion includes a cavity structure formed by extending a lingual side surface of the anterior tooth area of the first shell-like body in a direction toward the jaw and then toward the posterior tooth.

Preferably, the surface of the cavity structure adjacent the jaw pair is a plane parallel to the occlusal surface.

Preferably, the plane is provided with a bite structure for positioning the mandibular position, and the bite structure is the same as the tooth shape of the mandibular anterior teeth area.

Preferably, the surface of the cavity structure adjacent to the jaw pair is a bevel for guiding the mandible to move forward.

Preferably, the mechanical strength of the adjustment portion is greater than the mechanical strength of the first shell-like body.

Preferably, the adjustment portion further comprises a filler located within the cavity structure.

Preferably, the cavity structure extends in the palate direction adjacent the lingual end of the jaw facing surface to form a reinforcement against bite induced deformation of the cavity structure.

Preferably, when worn, at least part of the reinforcement portion conforms to the palate and conforms to the curvature of the palate.

Compared with the prior art, the dental instrument for occlusal adjustment provided by the utility model has the advantages that:

the dental apparatus for bite adjustment in this application includes a first shell-like body accommodating the maxillary teeth and a second shell-like body accommodating the mandibular teeth, and an adjusting portion provided on the first shell-like body can open bite of the anterior teeth area of the patient, and simultaneously, the second shell-like body can perform depression of the mandibular anterior teeth. That is, the dental instrument of the present application does not have an undesirable effect on the anterior maxillary teeth when solving deep jaw cases by depressing the anterior teeth. In addition, the adjustment part not only can open the occlusion of the anterior teeth area so that the teeth of the anterior teeth area of the upper jaw and the lower jaw are kept at the same position in the correction process, but also can provide auxiliary depression force for the anterior teeth of the lower jaw, and can also enhance the positioning effect of the shell-shaped body of the lower jaw, provide the correction expression rate of the shell-shaped body of the lower jaw and improve the correction effect. Therefore, the first shell and the second shell in the application work together to solve the deep jaw covering problem, and the treatment effect can be effectively improved.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic illustration of the wearing of a dental instrument for bite adjustment in some embodiments of the present application;

FIG. 2 is a schematic illustration of a dental instrument for bite adjustment in some embodiments of the present application;

FIG. 3 is a schematic structural view of a second shell-like body according to some embodiments of the present application;

FIG. 4 is a schematic structural view of a second shell-like body according to some embodiments of the present application;

FIG. 5 is a schematic structural view of a second shell-like body according to some embodiments of the present application;

FIG. 6 is a schematic structural view of a second shell-like body in some embodiments of the present application;

FIG. 7 is a schematic structural view of a second shell-like body according to some embodiments of the present application;

FIG. 8 is a schematic structural view of a first shell-like body according to some embodiments of the present application;

FIG. 9 is a schematic structural view of a first shell-like body according to some embodiments of the present application;

FIG. 10 is a schematic structural view of a first shell-like body according to some embodiments of the present application;

FIG. 11 is a schematic structural view of a first shell-like body according to some embodiments of the present application;

FIG. 12 is a schematic view of the structure of a first shell-like body in some embodiments of the present application;

FIG. 13 is a schematic view of the structure of a first shell-like body in some embodiments of the present application;

fig. 14 is a schematic structural view of a first shell-like body according to some embodiments of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments may be mutually combined and referred to without contradiction.

The "posterior tooth zone" referred to in the various examples in this application is defined according to the classification of teeth including premolars and molars, shown as 4-8 teeth in FDI notation, and anterior tooth zone FDI notation as 1-3 teeth in pages 36-38 of the oral medicine guide, 2 nd edition published by the university of Beijing medical Press. The teeth of the anterior teeth area include central incisors, lateral incisors, and cuspids. In addition, referring to teeth in the deciduous stage, the "posterior tooth area" is defined according to the classification of deciduous teeth including deciduous incisors, deciduous cuspids and deciduous molars, wherein deciduous incisors include deciduous intermediate teeth and deciduous side incisors, and deciduous molars include first deciduous molars and second deciduous molars, published by the university of Beijing medical press, 2 nd edition, pages 40-41.

The shell-shaped body is provided with a plurality of cavities for accommodating a plurality of teeth, and is divided into a lingual surface and a labial surface, a mesial surface and a distal surface. Wherein, the "lingual surface" is named for each surface of the dental crown according to pages 35-36 of the "oral medicine guide" published by the university of Beijing, medical science Press, 2 nd edition, wherein the labial surface and the buccal surface are the surfaces of the dental crown of the front tooth close to the labia, and the surface of the dental crown of the rear tooth close to the cheek is the buccal surface. The lingual surface is the surface of the front and rear teeth near the tongue of the crown. The mesial and distal surfaces are the surfaces of the crown adjacent to the adjacent tooth, collectively referred to as the adjacent surfaces. The side closer to the midline of the face is called the mesial side, and the side farther from the midline of the face is called the distal side.

Embodiments of the present application will be described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, an embodiment of the present application provides a dental appliance for bite adjustment, including a first shell-shaped body 11 accommodating maxillary teeth and a second shell-shaped body 12 accommodating mandibular teeth, the lingual side of an anterior dental region of the first shell-shaped body 11 being provided with an adjustment portion 111 for adjusting a vertical relationship of the upper and lower jaws, the adjustment portion 111 being at least partially connected to the lingual side of the anterior dental region of the first shell-shaped body 11, a tooth receiving cavity of the second shell-shaped body 12 for accommodating at least a portion of the anterior dental region teeth having a geometry for applying a depressing force to the at least a portion of the anterior dental region teeth; when worn, the adjusting part 111 applies auxiliary depressing force to the teeth in the mandibular front teeth area adjacent to the surfaces of the teeth in the mandibular front teeth.

In some embodiments, the first shell body 11 and the second shell body 12 may not only be used to solve the problem of deep jaw coverage, but also to design orthodontic alignment of teeth, in particular, the first shell body 11 and the second shell body 12 accommodate all of the dentition of the upper jaw and the lower jaw, and the tooth receiving cavities of the first shell body 11 and the second shell body 12 have a geometry with a dislocation from the current dentition so that the dentition may be moved from the current arrangement position to the target position. The correction is synchronously carried out, so that the correction period is greatly shortened.

In some embodiments, the height of the tooth receiving cavity of the second shell body 12 for receiving at least a portion of the anterior teeth is less in the vertical direction than the height of the tooth crown in the vertical direction. That is, the height of the tooth receiving cavity corresponding to the depressed tooth in the front tooth area in the vertical direction is smaller than the height of the crown of the depressed tooth in the vertical direction. Specifically, referring to fig. 3, the height of the tooth receiving cavity of the second shell-like body 12 for receiving at least part of the teeth of the front tooth area is smaller in the vertical direction than in the vertical direction. That is, the height of the tooth receiving cavity corresponding to the depressed tooth in the front tooth area in the vertical direction is smaller than the height of the crown of the depressed tooth in the vertical direction. Specifically, the overall height Y1 of the tooth receiving cavity in the vertical direction may be smaller than the height Y2 of the crown of the depressed tooth, and the height difference between the tooth receiving cavity for receiving at least part of the front teeth area tooth and the crown of the tooth in the vertical direction is 0.1mm to 0.2 mm. The benefit of this design is that when the second shell 12 is worn over the patient's mandibular dentition, the posterior teeth area teeth will be held down with the posterior teeth area teeth receiving cavity of the second shell 12 in place, and the anterior teeth area teeth will always be held down by the downward force applied to the anterior teeth at the incisors of the teeth by the corresponding teeth receiving cavity that is to be held down, thus, during the wearing of the second shell 12, the anterior teeth area teeth will always be held down by the downward force.

In another embodiment, referring to fig. 4, the partial height of the front tooth area of the second shell-shaped body 12 in the vertical direction of the tooth receiving cavity corresponding to the depressed tooth is smaller than the height of the tooth crown corresponding to the depressed tooth, and specifically, the partial height decrease may be formed by partially recessing downwards (i.e. recessing into the gingival side) at the cut end of the corresponding tooth receiving cavity. The local height reduction range H1 is between 0.1mm and 0.2 mm.

In other embodiments, referring to fig. 5, the dental appliance for bite adjustment further comprises a hold down attachment 13 disposed on a surface of the cuspid or premolars adjacent to the at least some anterior teeth, the hold down attachment 13 applying a vertically downward force to the second shell 12 to cause the second shell 12 to apply a hold down force to the at least some anterior teeth when worn. Specifically, when the second shell-like body 12 is required to depress all of the teeth of the anterior teeth, that is, the central incisors, the lateral incisors, and the cuspids are required to be depressed, the depression appendages 13 are bonded to the labial surfaces of the teeth of the premolars on both sides of the mandible, and the surfaces of the depression appendages 13 adjacent to the gingival ends are concave curved surfaces 13a formed to be concave toward the jaw direction. The second shell-shaped body 12 is provided with a depression accommodating cavity 123 which is consistent with the outline of the depression accessory 13 at a position corresponding to the depression accessory 13. The concave curved surface applies a vertically downward force to the depressed receiving cavity 123 when worn. The second shell-like body 12 applies downward force to the central incisors, the side incisors, and the cuspids, thereby achieving depression of the central incisors, the side incisors, and the cuspids. In other embodiments, if the anterior teeth are middle incisors and side incisors, the labial surfaces of the teeth on the two sides of the cuspids are bonded with the depressing attachment 13, and the surfaces of the depressing attachment 13 adjacent to the gingival end are concave curved surfaces concavely formed toward the jaw. The second shell-shaped body 12 is provided with a depression accommodating cavity 123 which is consistent with the outline of the depression accessory 13 at a position corresponding to the depression accessory 13. The concave curved surface applies a vertically downward force to the depressed receiving cavity 123 when worn. The second shell-like body 12 applies downward force to the central incisors and the lateral incisors, thereby achieving depression of the central incisors and the lateral incisors.

In the bite adjustment dental device according to other embodiments of the present application, the second shell-like body 12 has a tooth receiving cavity for receiving at least a portion of the teeth in the posterior region and applying a lifting force to at least a portion of the teeth in the posterior region. Deep jaw cases are often accompanied by deep SPEE curves, which are generally required for patients with deep SPEE to depress the anterior teeth area of their mandibular dentition and raise the posterior teeth area, i.e. flatten the mandibular SPEE curve. After the dental appliance of this embodiment is worn, since the height of the adjusting part 111 in the vertical direction has an effect of opening bite, a certain gap may occur in the upper and lower jaws of the teeth of the posterior dental region of the patient after the dental appliance is worn, providing space for the elevation of the teeth of the posterior dental region. Specifically, referring to fig. 6, the tooth receiving cavity of the second shell-shaped body 12 for receiving at least part of the teeth in the posterior tooth area is provided with force application points 121 at two sides of the cheek tongue adjacent to the gingival end, and the force application points 121 can be formed by recessing the tooth receiving cavity towards the teeth, so as to apply lifting force to at least part of the teeth in the posterior tooth area. Alternatively, referring to fig. 7, a lifting attachment 14 is provided on the buccal side of the teeth to be lifted in the posterior tooth area, and the length of the lifting attachment 14 in the mesial-distal direction is 1/2-2/3 of the length of the corresponding tooth in the mesial-distal direction. The second shell-like body 12 has a lifting accommodation cavity 124 corresponding to the lifting attachment 14, and when worn, the lifting attachment 14 interacts with the lifting accommodation cavity 124 so that the tooth provided with the lifting attachment 14 is subjected to lifting force, and generally, when worn, the surface of the lifting attachment 14 adjacent to the gingival end interacts with the surface corresponding to the lifting accommodation cavity 124, and the force generated by the elastic deformation of the lifting accommodation cavity 124 acts on the surface of the lifting attachment 14 adjacent to the gingival end, thereby realizing the application of lifting force to the tooth adhered with the lifting attachment 14.

In bite-adjusted dental appliances of other embodiments of the present application, referring to fig. 8, the tooth receiving cavity of the first shell-like body 11 receiving at least a portion of the teeth of the posterior region may also be designed to apply a lifting force to at least a portion of the teeth of the posterior region. In the case of deep jaw treatment, after the mandibular SPEE curve has been flattened by the second shell-shaped body 12, the upper and lower jaws of the posterior dental region still have a certain space in the vertical direction under the action of the adjusting part 111, so that a better occlusion effect is achieved. The tooth receiving cavity of the first shell-shaped body 11 for receiving at least part of the teeth in the posterior teeth area is provided with force application points 112 at the two sides of the cheek tongue adjacent to the gingival end, and the force application points 112 can be formed by recessing the tooth receiving cavity towards the teeth, so as to realize the application of lifting force to at least part of the teeth in the posterior teeth area of the upper jaw. Alternatively, referring to fig. 9, the cheek side of the teeth in the posterior maxillary region is required to be provided with a elevating attachment 14, and the length of the elevating attachment 14 in the mesial-distal direction is 1/2 to 2/3 of the length of the corresponding teeth in the mesial-distal direction. The first shell-like body 11 has a lifting accommodation cavity 114 corresponding to the lifting attachment 14, and when the tooth provided with the lifting attachment 14 is worn, the lifting attachment 14 interacts with the lifting accommodation cavity 114 so that the tooth provided with the lifting attachment 14 is subjected to lifting force, and generally, when the tooth is worn, the surface of the lifting attachment 14 adjacent to the gingival end interacts with the surface corresponding to the lifting accommodation cavity 114, and the force generated by the elastic deformation of the lifting accommodation cavity 114 acts on the surface of the lifting attachment 14 adjacent to the gingival end, so that the lifting force is exerted on the tooth adhered with the lifting attachment 14.

In some embodiments of the present application, referring to fig. 10, the adjustment portion 111 includes a cavity structure 111a formed by extending a lingual side of the anterior tooth area of the first shell-like body 11 in a contra-jaw direction and then in a posterior tooth direction. Specifically, the adjusting portion 111 includes a side wall formed by extending and bending a lingual side of the anterior teeth area of the first shell-shaped body 11 to form a cavity structure 111a, and the cavity structure 111a accommodates at least a incisor edge of the anterior teeth area of the mandible or a portion adjacent to the incisor edge; and comprises a reinforcing portion 113 for at least partially counteracting the deformation of the shell-like body due to the engagement, one end of the reinforcing portion 113 being connected to the end of the side wall remote from the first shell-like body 11. More specifically, one lingual end of the anterior teeth area of the first shell 11 is bent and extended to a side far from the anterior teeth area of the upper jaw, and a side wall of the cavity structure 111a formed by the bent and extended extension may be a curved surface with smooth transition or an extended surface surrounded by a polygon, that is, a side of the cavity structure 111a adjacent to the anterior teeth area of the upper jaw is connected to the lingual side of the anterior teeth area of the first shell 11, and a side of the cavity structure 111a far from the anterior teeth area of the upper jaw is connected to the reinforcement part 113. The specific location of the connection between the cavity structure 111a and the lingual side of the anterior tooth area of the first shell body 11 may be the location of the lingual side of the anterior tooth area of the first shell body 11 adjacent to the gingival margin or the location of the lingual side of the anterior tooth area of the first shell body 11 adjacent to the lingual fossa, specifically, the connection may be from the location of the lingual side of the anterior tooth area of the first shell body from 1/4-1/2 of the length of the crown of the anterior tooth area as the connection starting point, that is, the connection location is not the location of the lingual side of the anterior tooth area of the shell body, but extends from the location of the lingual side of the anterior tooth area of the first shell body 11 adjacent to the gingival margin or the location of the anterior tooth area of the first shell body 11 adjacent to the lingual fossa, to the location of the anterior tooth area of the anterior tooth is extended away from the side of the anterior tooth area of the upper jaw. The reinforcement portion 113 is formed by extending the cavity structure 111a in the palate direction adjacent to the lingual end of the jaw facing surface, and the reinforcement portion 113 may partially or entirely conform to the palate area of the patient and conform to the curvature of the palate, thereby counteracting deformation of the adjustment portion 111 during wear. Alternatively, referring to fig. 11, the reinforcing portion 113 is a bump structure formed by a surface of the distal end of the cavity structure 111a protruding in a direction away from the anterior maxillary tooth, thereby increasing the deformation resistance of the cavity structure 111a in the vertical direction. Cavity structure 111a accommodates at least the incisors of teeth in the anterior mandibular region or a portion adjacent to the incisors, more specifically, "jaw-covering" refers to the vertical distance of the maxillary dental cap across the mandibular teeth, typically 1-3mm. In the anterior teeth, the covered part is not more than 1/3 of the labial surface of the incisors, which becomes the normal jaw coverage. The excess is deep covering the jaw. The degree depends on the position of the incisor edge of the lower jaw to bite on the lingual surface of the upper jaw, for example, the incisor is a normal jaw covering for 1/3 of the incisor; the ones within 1/3 of the bite are called I degree deep jaw; the ones biting within 1/3 of the neck are called II degree deep jaw; the one that bites 1/3 more of the neck is called III-degree deep jaw. While cavity structure 111a accommodates a portion of or adjacent to the incisors of the anterior mandibular teeth, may include the following: 1) The cutting edge is 1/3 of the cutting position of the labial surface of the anterior mandibular tooth; 2) A portion adjacent to the incisor edge is adjacent 1/3, such as between 1/4-1/3 or between 1/3-1/2, more preferably between 1/4-1/3, of the labial surface of the anterior mandibular tooth, where the vertical distance of the maxillary dental cap across the mandibular tooth is no more than 1/3 of the labial surface of the mandibular incisor tooth.

In some embodiments, the adjustment portion 111 includes a cavity structure 111a formed by a partial distal protrusion of the lingual side of at least one tooth receiving cavity of the anterior tooth area of the first shell body 1111; referring to fig. 12 specifically, the first shell-shaped body 11 has a plurality of cavity structures 111a extending from a partial lingual side of the tooth receiving cavity toward a distal direction, and the cavity structures 111a are communicated with the tooth receiving cavity, so that the design has the advantages that the adjusting portion 111 and the first shell-shaped body 11 are integrally formed, and the design of the adjusting portion 111 is suitable for mass production and manufacturing, and in addition, the design of the adjusting portion 111 does not affect the wrapping property of the tooth receiving cavity on teeth too much.

In some embodiments, referring to fig. 13, the surface of the cavity structure 111a adjacent to the jaw pair is a plane parallel to the occlusal plane. Specifically, the whole surface of the cavity structure 111a adjacent to the opposite jaw is a plane, or a bite structure 111b for positioning the mandibular position is arranged on the surface, and the shape of the bite structure 111b is the same as that of teeth in the front teeth area of the opposite jaw. The advantage of this design is that the mandibular position can be better located by the bite structure 111b, as well as guiding the mandibular sagittal movement, to account for cases of partial deep coverage or contra-jaw.

Alternatively still, in other embodiments, as shown with reference to fig. 14, the surface of the cavity structure 111a adjacent to the opposing jaw is a beveled surface that guides the forward movement of the mandible. The inclined surface can drive the mandibular teeth to move forwards in the occlusion process, so that the mandibular teeth are guided to move forwards, and the deep coverage problem is corrected.

In some embodiments, the mechanical strength of the adjustment portion 111 is greater than the mechanical strength of the first shell-like body 11. Specifically, the adjusting portion 111 and the first shell-shaped body 11 are made of the same material, such as one of PETG, PC and TPU, and may be made of other polymer materials with safety in use of medical devices for use in the oral cavity, so that the teeth correcting effect is generated while the oral cavity is safe to wear; in other embodiments, the adjusting portion 111 and the first shell-shaped body 11 are respectively made of different single materials or different multi-layer composite materials, more specifically, when the adjusting portion 111 and the first shell-shaped body 11 are made of different single materials, any two of PETG, PC or TPU may be combined; the adjusting portion 111 and the first shell-shaped body 11 may be made of different materials during design or preparation, for example, the material of the first shell-shaped body 11 is TPU, the material of the adjusting portion 111 may be PETG, and at this time, the membrane used for preparing by hot press molding may be made of different materials locally, or may be made of different materials for local areas during 3D direct printing. When the adjusting portion 111 is a multi-layer composite material different from the first shell-shaped body 11, the adjusting portion 111 may be a multi-layer composite material formed by any combination of PETG, PC or TPU, and the first shell-shaped body 11 is a single material; the adjusting portion 111 may be made of a single material, and the first shell-like body 11 may be made of a multi-layer composite material; it is also possible that the adjustment part 111 and the first shell-like body 11 are both of a multi-layer composite material; more specifically, the adjusting portion 111 is a different multi-layer composite material from the first shell-shaped body 11, for example, the first shell-shaped body 11 is of a single-layer structure or a multi-layer composite structure, and the adjusting portion 111 is a multi-layer composite material, wherein one layer of the multi-layer structure of the adjusting portion 111 may be the same as the first shell-shaped body 11 or may be different, for example, the adjusting portion 111 is made of a double-layer composite material, specifically, PETG and TPU, and the material of the first shell-shaped body 11 is PETG; also, as the adjustment portion 111 is a double-layer composite material composition, specifically PETG and TPU, the first shell-like body 11 is a double-layer composite material composition, specifically PETG and PC. The above-mentioned embodiments are only some of the preferred embodiments, and various combinations of materials capable of achieving the effects of the present utility model are within the scope of the present utility model, and are not described herein.

In other embodiments, as shown with reference to fig. 11, the adjustment portion 111 further includes a filler 16 positioned within the cavity structure 111a. The filler 16 can be made of glass resin material meeting the standard of stomatology, when the dental appliance in the application is worn in the initial stage of correction, the mandibular teeth of a patient can have larger biting force on the adjusting part 111, and the cavity structure 111a of the adjusting part 111 is easy to generate biting collapse deformation in the use process, so that the dental appliance can not be worn in the correction process, and the filler 16 in the application can well solve the problems, and the entity filler 16 can effectively improve the deformation resistance of the cavity structure 111a, so that the dental appliance in the initial stage of correction can obtain more reliable and stable correction results.

It should be noted that, under the condition of no contradiction, the above examples can be freely combined according to needs to form different new embodiments, and the embodiments formed by the combination are all within the protection scope of the present utility model, and are not described herein in detail for the sake of saving the text of the application.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Likewise, the foregoing is merely specific embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (20)

1. A dental appliance for bite adjustment, comprising a first shell-like body accommodating maxillary teeth and a second shell-like body accommodating mandibular teeth, the lingual side of the anterior teeth area of the first shell-like body being provided with an adjustment portion for adjusting the vertical relationship of the upper and lower jaws, the adjustment portion being at least partially connected to the lingual side of the anterior teeth area of the first shell-like body, the tooth receiving cavity of the second shell-like body for accommodating at least a portion of the anterior teeth area having a geometry for exerting a depressing force on the at least a portion of the anterior teeth area; when the device is worn, the adjusting part is adjacent to the surface of the mandibular anterior teeth to apply auxiliary depression force to the mandibular anterior teeth.

2. The dental appliance of claim 1, wherein the second shell-like body has a vertically smaller height of the tooth receiving cavity for receiving at least a portion of the anterior teeth than a vertically smaller height of the crown of the teeth.

3. The dental appliance of claim 2, wherein the second shell body has a height difference in a vertical direction between a tooth receiving cavity for receiving at least a portion of the anterior teeth and a crown thereof for receiving teeth between 0.1mm and 0.2 mm.

4. The dental appliance of claim 1 or 2, further comprising a hold down attachment provided on a surface of the cuspid or premolars adjacent to the at least part of the anterior teeth, the hold down attachment applying a vertically downward force to the second shell body to cause the second shell body to apply a hold down force to the at least part of the anterior teeth when worn.

5. The dental instrument of claim 4, wherein a surface of the depression attachment adjacent the gingival end is a concave curved surface concavely formed toward the jaw.

6. The dental instrument of claim 5, wherein the second shell body has a depressed receiving cavity conforming to the contour of the depressed attachment at a location corresponding to the depressed attachment.

7. The dental instrument of claim 6, wherein the concave curve applies a vertically downward force to the depressed receiving cavity when worn.

8. The dental instrument of claim 1, wherein the tooth receiving cavity of the second shell-like body receiving at least a portion of the teeth of the posterior region applies a lifting force to at least a portion of the teeth of the posterior region.

9. The dental instrument of claim 8, wherein the first shell-like body accommodates a tooth receiving cavity of at least a portion of the teeth of the posterior region to apply a lifting force to at least a portion of the teeth of the posterior region.

10. The dental appliance of claim 8 or 9, further comprising a raised attachment provided on the buccal side of at least a portion of the teeth in the posterior region, the raised attachment having a length in the mesial-distal direction of 1/2-2/3 of the length in the mesial-distal direction of its corresponding tooth.

11. The dental instrument of claim 10, wherein the second shell-like body has a raised receiving cavity conforming to the contour of the raised attachment at the raised position, the raised attachment interacting with the raised receiving cavity when worn such that a tooth provided with the raised attachment is subjected to a lifting force.

12. The dental instrument of claim 10, wherein the first shell-like body has a raised receiving cavity conforming to the contour of the raised attachment at the raised position, the raised attachment interacting with the raised receiving cavity when worn such that a tooth provided with the raised attachment is subjected to a lifting force.

13. The dental instrument of claim 1, wherein the adjustment portion includes a cavity structure formed by a lingual side of the anterior tooth area of the first shell body extending in a posterior-to-jaw direction and a posterior tooth direction.

14. The dental instrument of claim 13, wherein a surface of the cavity structure adjacent the pair of jaws is a plane parallel to the occlusal plane.

15. The dental instrument of claim 14, wherein the planar surface has bite formations thereon for locating mandibular positions, the bite formations being the same shape as teeth of the anterior mandibular region.

16. The dental instrument of claim 13, wherein the surface of the cavity structure adjacent the counter jaw is a ramp that directs the anterior movement of the mandible.

17. The dental instrument of claim 13, wherein the adjustment portion has a mechanical strength greater than a mechanical strength of the first shell-like body.

18. The dental instrument of claim 17, wherein the adjustment portion further comprises a filler positioned within the cavity structure.

19. The dental instrument of claim 13, wherein the cavity structure extends in a palatal direction adjacent a lingual end of the jaw facing surface to form a reinforcement against bite induced deformation of the cavity structure.

20. A dental instrument as in claim 19, wherein at least a portion of the reinforcement portion conforms to the palate and conforms to the curvature of the palate when worn.