CN114073594A

CN114073594A - Shell-shaped dental appliance, design and preparation method thereof, dental appliance set and system

Info

Publication number: CN114073594A
Application number: CN202010847390.1A
Authority: CN
Inventors: 庄慧敏; 沈杰; 吴刚; 王星星; 姚峻峰
Original assignee: Shanghai Zhengya Dental Technology Co Ltd
Current assignee: Shanghai Zhengya Dental Technology Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2022-02-22

Abstract

A shell-shaped tooth appliance comprises a shell-shaped body, wherein the shell-shaped body is provided with a cavity for accommodating a plurality of upper and lower jaw teeth, the lingual side of the anterior dental area of the shell-shaped body is also provided with a sagittal adjusting part which can adjust the relation between the upper and lower jaws and can at least partially offset the deformation of the shell-shaped body caused by occlusion, and at least part of the sagittal adjusting part is connected to the lingual side of the anterior dental area of the shell-shaped body; the sagittal adjustment part has a geometric structure which can stabilize the occlusion relation of the upper jaw and the lower jaw, reduce the occlusion deformation quantity generated by the shell-shaped body and adjust the position of the teeth in the lower jaw anterior dental area relative to the upper jaw from the sagittal direction to the target occlusion position. The invention also provides a tooth correcting set and a tooth correcting system, which can realize the adjustment of the sagittal position of teeth in the mandibular anterior tooth zone by adopting the invisible correcting device and simultaneously reduce the problem of occlusion deformation generated by the shell-shaped tooth correcting device.

Description

Shell-shaped dental appliance, design and preparation method thereof, dental appliance set and system

Technical Field

The invention belongs to the field of medical appliances, and relates to a shell-shaped tooth appliance, a tooth appliance set, a tooth appliance system, a design method and a preparation method of the shell-shaped tooth appliance.

Background

Bad habits of the mouth are one of the most common causes of malocclusion, and according to the statistics of Beijing medical university,1/4 the deep coverage of anterior teeth

The malocclusion is caused by the abnormal vertical development of any one or two of upper and lower dental arches and/or upper and lower jaws, and is characterized in that the incisal edge of the upper front tooth covers more than one third of the labial surface of the crown of the lower front tooth, or the incisal edge of the lower front tooth is occluded with more than one third of the lingual side incisal edge of the crown of the upper front tooth, so that a patient can easily bite the gum, and the diseases of periodontitis, facial joints and the like of the front tooth are caused. Deep coating

The correction of the teeth largely determines whether the teeth are successfully corrected or not, and the correction of deep coverage

The purpose of the method is to correct the too steep Spee curve of the lower jaw and the compensation curve of the upper jaw, and finally achieve the Spee curve and the compensation curve of the upper and lower jaw dentitions which are normal, so that the overlapping and covering relationship of the anterior teeth is coordinated. Deep coverage in most malocclusal patients

The correction of (a) may be the primary step of the overall dental correction procedure, and the open bite is the correction of deep coverage

Is critical.

In the prior art, a maxillary movable appliance is generally adopted to keep the height of an anterior alveolar bone unchanged, emphatically raise the height of a posterior tooth and gradually grind the anterior alveolar bone and the posterior alveolar bone from the last tooth

Cushion the teeth to make the teeth contact, after the back teeth are heightened, the front teeth and the tongue are dislocated and the back teeth are corrected. There is also a method of providing a flat guide on the lingual side of the anterior maxillary area, but this method requires fixing a flat guide made of metal or resin to the upper jaw, and the patient wears the flat guide not only after wearing itThe phenomenon that part of teeth are suspended can be generated, the chewing of the patient is influenced to a certain extent, and the foreign body sensation of the patient is strong.

Therefore, the invisible tooth appliance is structurally improved on the invisible tooth appliance, the effect of using the upper jaw movable appliance or flat guiding assisting appliance can be realized, and the novel invisible tooth appliance with the wearing advantage of the invisible appliance has important significance.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a shell-shaped tooth appliance, a tooth appliance set, a tooth appliance system, a design method and a preparation method of the shell-shaped tooth appliance, and can solve the problem that the prior art cannot adjust the sagittal position of teeth in the anterior mandibular area by adopting an invisible appliance and simultaneously reduce the occlusion deformation generated by the shell-shaped tooth appliance.

The invention solves the technical problems through the following technical scheme:

a shell-shaped tooth appliance comprises a shell-shaped body, wherein the shell-shaped body is provided with a cavity for accommodating a plurality of upper and lower jaw teeth, the lingual side of the anterior dental area of the shell-shaped body is also provided with a sagittal adjusting part which can adjust the relation between the upper and lower jaw positions and can at least partially offset the deformation of the shell-shaped body caused by occlusion, and at least part of the sagittal adjusting part is connected to the lingual side of the anterior dental area of the shell-shaped body; the sagittal adjustment part has a geometric structure which can stabilize the occlusion relation of the upper jaw and the lower jaw, reduce the occlusion deformation quantity generated by the shell-shaped body and adjust the position of the teeth in the lower jaw anterior tooth area relative to the upper jaw from the sagittal direction to the target occlusion position.

Furthermore, the sagittal adjustment part comprises a side wall which is formed by extending and bending one side of the lingual side of the anterior tooth area of the shell-shaped body to form an accommodating space and a first reinforcing part which at least partially offsets the deformation of the shell-shaped body caused by occlusion; the accommodating space at least accommodates the incisal margin of teeth in the anterior mandibular teeth area or a part of the incisal margin, and one end of the first reinforcing part is connected with one end of the side wall far away from the shell-shaped body.

Further, in the sagittal section along the long axis direction of the tooth body, the contact area of the first reinforcing part and the lower jaw is more adjacent to the cutting edge of the maxillary anterior tooth area than the contact area of the accommodating space and the lower jaw.

Further, on the sagittal section, a first included angle formed by the joint of the first reinforcing part and the side wall of the accommodating space is alpha, wherein alpha is more than or equal to 90 degrees and less than or equal to 160 degrees.

Furthermore, the joint of the first reinforcing part and the shell-shaped body is a smooth-transition curved surface.

Furthermore, the first reinforcing part is in smooth transition connection with the middle-near end surface of the cavity for accommodating the first premolar on the left side and the right side of the shell-shaped body.

Further, the side of the first reinforcing part, which is far away from the teeth of the maxillary anterior tooth area, is basically matched with the curvature of the dental anterior tooth area.

Further, in a sagittal section, the width of the first reinforcing part in the proximal-distal direction is 2-5 mm.

Furthermore, the accommodating space is a groove which is continuously distributed or partially continuously distributed on the lingual side of the teeth in the maxillary anterior tooth area and is concave towards the maxilla, and the groove can reduce the deformation quantity generated by the shell-shaped body along the bucco-lingual side direction or the sagittal direction.

Furthermore, the height difference of the accommodating space in the sagittal section along the long axis direction of the tooth body is 1/4-1/2 of the length of the tooth crown in the long axis direction of the mandibular anterior tooth area.

Further, the width of the accommodating space in the sagittal section along the proximal-distal direction is 1.5-4.0 mm.

Further, the elastic modulus of the first reinforcing portion is larger than the elastic modulus of the shell-like body.

Further, the first reinforcing portion has a hardness greater than that of the shell-like body.

Further, the shore hardness of the first reinforcing portion is 65D-80D, and the shore hardness of the shell-shaped body is 50D-75D.

Further, the first reinforcement part is a multilayer structure comprising a base layer and reinforcement layers, wherein at least one reinforcement layer at least partially covers the base layer.

Further, the overall thickness of the first reinforcement part formed by the multilayer structure is greater than the thickness of the shell-like body.

Further, the reinforcing layer has a modulus of elasticity greater than the modulus of elasticity of the base layer.

Further, the thickness of the first reinforcing part is 0.7-2.0mm, and the thickness of the shell-shaped body is 0.5-1.0 mm.

Further, the first reinforcing part, the accommodating space and the shell-shaped body are integrally formed.

Further, still be equipped with the second rib in the one end that first rib extends to far away central direction, just first rib with the second rib encloses and closes and form a receiving space, first rib and second rib are the setting of second contained angle beta, and beta is more than or equal to 90 and < 180.

Further, a reinforcing block is accommodated in the accommodating space.

Furthermore, a male and female structure matched with the reinforcing block is arranged on the second reinforcing part.

Furthermore, the second reinforcing part is provided with a convex bubble protruding towards the far-middle direction, and a protruding part matched with the convex bubble is further arranged at the position, corresponding to the convex bubble, of the contact area of the reinforcing block and the second reinforcing part.

Furthermore, the side walls of the accommodating space comprise a mesial accommodating side wall and a distal accommodating side wall, one side of the mesial accommodating side wall, which is close to the maxillary incisal edge, is at least partially connected with the lingual side of the anterior tooth area of the shell-shaped body, and one side of the mesial accommodating side wall, which is far from the maxillary incisal edge, is at least partially connected with one end of the distal accommodating side wall; the other end of the far middle accommodating side wall is at least partially connected with the first reinforcing part.

Further, the far-middle accommodating side wall is provided with a guide surface for guiding the lower jaw to slide into the accommodating space.

Further, the guide surface is a guide plane, a guide curved surface, or a combination of the guide plane and the guide curved surface.

Further, when the far and middle accommodating side wall is a guide plane or a part of the far and middle accommodating side wall is a guide plane, on the sagittal section, the inclination angle is a third included angle gamma formed between the far and middle accommodating side wall and the jaw plane, wherein gamma is more than or equal to 30 degrees and less than or equal to 80 degrees.

Further, the medial accommodation side wall is provided with a stabilizing surface, and the stabilizing surface has an inclination angle which enables the lower jaw to be stabilized in the accommodation space.

Further, the stable surface is a stable plane, a stable curved surface, or a combination of the stable plane and the stable curved surface.

Further, when the far medial accommodation side wall is a guide plane or a part of the far medial accommodation side wall is a guide plane, on the sagittal section, the inclination angle is a fourth included angle delta formed between the near medial accommodation side wall and the jaw plane, wherein delta is more than or equal to 30 degrees and less than or equal to 80 degrees.

Further, the shell-like body has a geometry that gradually repositions the maxillary teeth from the initial position to the target corrective position.

The invention also provides a dental appliance system which comprises a plurality of shell-shaped dental appliances and is characterized in that at least one shell-shaped dental appliance in the plurality of shell-shaped dental appliances is the shell-shaped dental appliance as described in any one of the above.

The invention also provides a dental correcting set which comprises an upper jaw dental corrector and a lower jaw dental corrector, wherein the upper jaw dental corrector is the shell-shaped dental corrector, and the lower jaw dental corrector comprises a lower jaw shell-shaped body for wrapping lower jaw teeth.

The invention also provides a dental correcting system which comprises a plurality of groups of dental correcting sets and is characterized in that the groups of dental correcting sets comprise at least one group of dental correcting sets, and the groups of dental correcting sets have geometrical shapes which can adjust the positions of the teeth in the lower jaw anterior dental zone relative to the upper jaw to the target occlusion position in the sagittal direction and simultaneously gradually reposition the teeth from the initial position to the target position.

The invention also provides a design method of the shell-shaped tooth appliance, which comprises the following steps:

acquiring a digital dental model: acquiring a digital dental model, wherein the digital dental model comprises a digital tooth model body;

designing a shell-shaped dental appliance: the shell-shaped tooth appliance is designed based on the digital dental model, the shell-shaped tooth appliance comprises a shell-shaped body designed based on the digital dental model body and a sagittal adjusting part at least partially connected with the lingual side of the shell-shaped body, and the sagittal adjusting part is designed to have a geometrical structure which can stabilize the occlusion relation of the upper jaw and the lower jaw, reduce the occlusion deformation quantity generated by the shell-shaped body and adjust the position of the teeth in the lower jaw anterior tooth area relative to the upper jaw from the sagittal direction to the target occlusion position.

The invention also provides a preparation method of the shell-shaped dental appliance, which is characterized in that the designed dental appliance is correspondingly prepared based on the design method, and the preparation method comprises the following steps: a preparation method of firstly carrying out hot press molding and then cutting or a direct 3D printing method.

Compared with the prior art, the invention has the beneficial effects that at least:

the invention discloses a shell-shaped tooth appliance, which is characterized in that a sagittal adjusting part is arranged on the lingual side of the anterior dental area of a shell-shaped body, the upper and lower jaw position relation can be adjusted, and simultaneously, the deformation of the shell-shaped body caused by occlusion can be at least partially counteracted.

The invention discloses a tooth correcting set, which comprises an upper jaw tooth correcting device and a lower jaw tooth correcting device, wherein the upper jaw tooth correcting device is a shell-shaped tooth correcting device with a sagittal adjusting part, a lower jaw position collapsing pot comprises a lower jaw shell-shaped body of a lower jaw tooth, upper and lower jaws are corrected simultaneously, and a patient with a deep lower jaw space curve can press the lower front tooth or lift the teeth in the rear tooth area to level a space curve, so that the upper and lower jaw teeth are corrected while the upper and lower jaw position relation is adjusted, and the correction is synchronously performed.

The tooth correcting system provided by the invention is a geometrical structure which is composed of a series of shell-shaped tooth correcting devices with sagittal direction adjusting parts and can enable teeth to be gradually repositioned from an initial position to a target position, and meanwhile, the relative position of the teeth in the mandibular anterior tooth area relative to the upper jaw in the sagittal direction can be adjusted. The other tooth correcting system provided by the invention consists of a series of correcting sets which can be worn by the upper jaw and the lower jaw simultaneously, and can be used for correcting the upper jaw and the lower jaw from the initial position to the target position gradually while adjusting the position relation of the upper jaw and the lower jaw.

Drawings

FIG. 1 is a schematic structural view of a shell-shaped dental appliance 10 according to one embodiment of the present disclosure.

FIG. 2 is a flow chart of a method for designing a shell-shaped dental appliance according to the present invention.

Fig. 3 is a partial sectional view taken in the direction of a-a' in fig. 1.

Fig. 4 is a partial sectional view illustrating a height difference between the accommodating space and the first reinforcing part in the direction of a-a' in fig. 1.

FIG. 5 is a graph illustrating the tendency of the upper and lower jaws to move in interaction according to one embodiment of the present invention.

FIG. 6 is a partial cross-sectional view of a shell dental appliance having a first reinforcement portion of a multi-layered construction in accordance with one embodiment of the present invention.

FIG. 7 is a schematic structural view of a shell-shaped dental appliance 20 according to one embodiment of the present disclosure.

Fig. 8 is a partial sectional view taken in the direction of B-B' in fig. 7.

FIG. 9 is a partial cross-sectional view of a shell dental appliance having a reinforcing block according to one embodiment of the present invention.

FIG. 10 is a schematic view of a shell-shaped dental appliance 30 according to one embodiment of the present invention.

Fig. 11 is a partial sectional view taken in the direction of C-C' in fig. 10.

FIG. 12 is a graph illustrating the tendency of the mandible to interact with one another in an orthosis set of the present invention.

FIG. 13 is a partial cross-sectional view of a shell-shaped dental appliance having a guide surface according to one embodiment of the present invention.

Fig. 14 is a cranial bitmap of an initial state of a patient of the present invention.

FIG. 15 is a cranial position view of a patient of the present invention after wearing a shell dental appliance.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

For deep coating

In the process of teeth correction, the upper jaw movable corrector is usually adopted to keep the height of the anterior alveolar bone unchanged, the height of the posterior teeth is increased emphatically, and the teeth are ground one by one from the last tooth

Cushion the teeth to make the teeth contact, after the back teeth are heightened, the front teeth and the tongue are dislocated and the back teeth are corrected.In addition, a flat guide is provided on the lingual side of the anterior maxillary area, but in this method, a flat guide made of metal or resin is fixed to the maxillary area, and not only is a part of teeth suspended after being worn by a patient, but also chewing of the patient is affected to some extent, and the patient feels a strong foreign body sensation. The shell-shaped tooth appliance is provided with the sagittal adjustment part, so that the position of the teeth in the lower jaw anterior tooth area relative to the upper jaw can be adjusted and adjusted from the sagittal direction to the target occlusion position, the deformation of the shell-shaped body caused by occlusion can be at least partially counteracted, the foreign body sensation in the mouth is small, and the wearing of a patient is more comfortable.

Examples

As shown in fig. 1, the shell-shaped dental appliance 10 of the present invention is used for adjusting the relation between the upper and lower jaw positions and at the same time can at least partially offset the deformation of the shell-shaped body caused by occlusion; in particular, the amount of the solvent to be used,

the shell-shaped dental appliance 10 comprises a shell-shaped body 100, the shell-shaped body 100 is provided with a cavity for accommodating a plurality of teeth, the shell-shaped body 100 is further provided with a sagittal adjusting part 110 for adjusting the position relation of the upper jaw and the lower jaw and simultaneously at least partially offsetting the deformation of the shell-shaped body caused by occlusion, the sagittal adjusting part 110 is at least partially connected to the lingual side of the shell-shaped body 100, the sagittal adjusting part 110 is contacted with the lower jaw when the upper jaw and the lower jaw interact with each other, and the sagittal adjusting part 110 has a geometrical structure for stabilizing the occlusion relation of the upper jaw and the lower jaw and reducing the amount of the occlusion deformation of the shell-shaped body 100 and adjusting the position of the teeth in the anterior mandibular area relative to the upper jaw from the sagittal to the target occlusion.

The design method of the shell-shaped dental appliance 10, as shown in fig. 2, includes the following steps:

s1: acquiring a digital dental model: acquiring a digital dental model, wherein the digital dental model comprises a digital tooth model body;

s2: design of shell dental appliance 10: the shell-shaped dental appliance 10 is designed based on a digital dental model, the shell-shaped dental appliance 10 comprises a shell-shaped body 100 designed based on the digital dental model body and a sagittal adjusting part 110 at least partially connected with the lingual side of the shell-shaped body 100, and the sagittal adjusting part 110 is designed to have a geometrical structure which can adjust the position of the teeth in the anterior mandibular area relative to the upper jaw from the sagittal direction to the target occlusion position while stabilizing the occlusion relation of the upper jaw and the lower jaw and reducing the amount of occlusion deformation generated by the shell-shaped body.

The shell-like body 100 may be configured to have a plurality of cavities for receiving a plurality of teeth and may be divided into an anterior dental zone and a posterior dental zone. Wherein the "posterior dental area" is defined according to the classification of teeth in the 2 nd edition of "introduction to oral medicine" published by Beijing university medical Press, pages 36-38, including premolar and molar teeth, and is represented by FDI notation of 4-8 teeth and FDI notation of anterior dental area is represented by 1-3 teeth. The anterior tooth area of the shell-shaped body 100 may be used to accommodate the central incisors, lateral incisors and cuspids of the maxillary teeth, and the posterior tooth area of the shell-shaped body 100 may be used to accommodate the first premolar, the second premolar, the first molar, the second molar and the third molar of the maxillary teeth. The shell-like body 100 is provided with a plurality of cavities for accommodating a plurality of teeth, and is divided into a lingual surface, a labial surface, a mesial surface and a distal surface. The "lingual surface" is named according to the respective surfaces of the dental crown in pages 35-36 of "introduction of oral medicine" 2 nd edition published by Beijing university medical Press, wherein the labial surface and the buccal surface are the labial surface on the side of the dental crown of the anterior tooth close to the labial lip, and the buccal surface on the side of the dental crown of the posterior tooth close to the buccal side. The lingual surface is the surface of the crowns of the anterior and posterior teeth close to the tongue and is generally called the lingual surface. The mesial surface and the distal surface are two surfaces of the dental crown adjacent to the adjacent tooth, and are collectively called the adjacent surfaces. The face closer to the midline of the face is called the mesial face, and the face farther from the midline of the face is called the distal face.

Description of the names of the various faces of the crown of teeth on page 44 of the second edition of dental anatomy and oral physiology and in fig. 6-8, "incisal margin" is the part of incisal bite function in the form of anterior teeth that form a ridge in the lingual surface with a round bulge, called "incisal ridge"; and is generally smoother at the labial surface, referred to as the "cutting edge". On page 43, "tooth trisection" is defined, and in order to clarify the location of a certain part on each surface of the tooth, each surface of the tooth crown and the tooth root is often described as trisection. For example, the lingual surface can be divided into mesial 1/3, mesial 1/3, and distal 1/3; the adjacent side can be divided into buccal 1/3, middle 1/3, and lingual 1/3; the labial surface can be divided into 1/3, middle 1/3, and neck 1/3; the posterior teeth are jaw 1/3, middle 1/3, neck 1/3.

In some embodiments of the present invention, the shell-shaped body 100 can also adjust the plurality of teeth to be gradually positioned from an initial position to a target correction position, where the initial position of the tooth may be an initial position of the tooth to be corrected or a position before any correction in the tooth correction process, and the target correction position of the tooth may be any position closer to the correction target than the initial position.

In some embodiments of the present invention, as shown in fig. 1 and 3 (sagittal section, i.e. section along a-a'), the sagittal adjustment portion 110 includes a side wall extending from the lingual side of the anterior dental area of the shell-shaped body 100 to form a receiving space 111, wherein the receiving space 111 receives at least the incisal margin of the teeth of the anterior dental area of the lower jaw or a portion adjacent to the incisal margin; and a first reinforcing part 112 for at least partially offsetting the deformation of the shell-shaped body caused by occlusion, wherein one end of the first reinforcing part 112 is connected with one end of the side wall far away from the shell-shaped body 100. More specifically, one end of the lingual side of the anterior dental area of the shell-shaped body 100 is curved and extended to a side away from the teeth of the anterior dental area of the upper jaw, and the side wall of the accommodating space 111 formed by the curved and extended portion may be a curved surface with smooth transition or an extended surface surrounded by polygons, that is, one side of the accommodating space 111 adjacent to the teeth of the anterior dental area of the upper jaw is connected to the lingual side of the anterior dental area of the shell-shaped body 100, and one side of the accommodating space 111 away from the teeth of the anterior dental area of the upper jaw is connected to the first reinforcement portion 112. The specific position of the junction between the receiving space 111 and the lingual side of the anterior dental area of the shell-shaped body 100 may be the lingual side of the anterior dental area of the shell-shaped body 100 adjacent to the gingival margin or the lingual side of the teeth of the anterior dental area accommodated by the shell-shaped body 100 adjacent to the lingual socket, specifically, the junction may be from the lingual side of the anterior dental area away from the shell-shaped body 100 as a starting point to 1/4-1/2 of the length of the dental crown of the anterior dental area as a starting point of the junction, that is, the junction is not the lingual side of the anterior dental area of the shell-shaped body but extends from the lingual side of the anterior dental area of the shell-shaped body 100 adjacent to the gingival margin or the lingual side of the teeth of the anterior dental area accommodated by the shell-shaped body 100 as an extending starting point to the side away from the teeth of the anterior dental area. The accommodation space 111 accommodates at least the anterior mandibular teethThe incisal margin or a portion adjacent to the incisal margin of a zone tooth, more specifically "cover

"means the vertical distance of the maxillary dental cap over the mandibular teeth, typically 1-3 mm. In the anterior teeth, the covered part does not exceed 1/3 of incisor labial surface and becomes the normal covering

. The excess becomes deep coating

. The extent of this is determined by the biting of the incisal margin of the mandibular incisor on the lingual surface of the maxillary incisor, e.g. 1/3, which is covered normally

(ii) a Biting within middle 1/3 is called deep I-coverage

(ii) a Biting into the neck 1/3 is called deep-coating of II degree

(ii) a Biting above the neck 1/3 is called deep-III coverage

. And the receiving space 111 receives the incisal margin or a portion adjacent to the incisal margin of the teeth in the anterior mandibular dental area, which may include the following cases: 1) the incisal margin is 1/3 points of the anterior labial surface of the mandible; 2) a portion adjacent the incisal edge is adjacent 1/3 to the anterior labial surface of the mandible, such as between 1/4-1/3 or between 1/3-1/2, and more preferably between 1/4-1/3, when the vertical distance that the maxillary teeth cover the mandibular teeth does not exceed the mandibular labial surface cut 1/3.

In one embodiment of the present invention, as shown in fig. 4 and 5, in the sagittal cross section along the long axis of the tooth body, the contact area of the first reinforcement part 112 with the lower jaw is closer to the incisal edge of the anterior maxillary tooth area than the contact area of the accommodating space 111 with the lower jaw, that is,the height difference Deltah exists between the contact area of the first reinforcing part 112 and the lower jaw and the contact area of the accommodating space and the lower jaw, and the deep covering is realized

After the patient wears the shell-shaped dental appliance 10, as shown in fig. 5, the teeth in the anterior mandibular area first contact the first reinforcement part 112, and then enter the accommodation space 111 along with the incisal edges of the teeth in the anterior mandibular area along with the occlusion action of the upper and lower jaws, that is, the teeth are in contact with the accommodation space 111 at the rear part, and the place where the teeth in the anterior mandibular area are finally and stably contacted with the upper jaw is the place where the accommodation space 111 is farthest away from the incisal ridges in the anterior mandibular area. The height difference Δ h can enable incisal margins of the teeth in the lower jaw anterior tooth area to be contained in the containing space 111, and the positions of the teeth in the lower jaw anterior tooth area relative to the upper jaw are adjusted to be from the sagittal direction to a target occlusion position, wherein the target occlusion position is the position where the vertical distance of the upper jaw covers the lower jaw teeth does not exceed the labial surface of the lower jaw incisor 1/3.

In some embodiments of the present invention, as shown in fig. 3, in a sagittal cross section, a first included angle α is formed at a joint of the first reinforcing portion 112 and the free end of the side wall of the accommodating space 111, and is greater than or equal to 90 ° and less than or equal to 160 °; one of the specific forms is that a first included angle α formed by the first reinforcing portion 112 may be 90 °, the free end of the side wall of the accommodating space 111 is perpendicular to the free end of the side wall of the accommodating space, and certainly, the included angle may be any angle greater than 90 ° and less than or equal to 160 °, that is, the first included angle α formed by connecting the first reinforcing portion 112 and the side wall of the accommodating space 111 is an obtuse angle, in any of the above embodiments, the first included angle α is greater than or equal to 90 ° and less than or equal to 160 °, the first reinforcing portion 112 extends along a side away from the teeth in the anterior maxillary area, and when contacting with the lower jaw, a guide surface for guiding the lower jaw to slide into the accommodating space 111 is formed, and when the upper jaw and the lower jaw interact with each other, the lower jaw tends to move in a sagittal direction to a target occlusion position relative to the upper jaw.

In some embodiments of the present invention, the junction between the first reinforcement part 112 and the shell-shaped body 100 is a smoothly-transitional curved surface, and further, the junction between the free end of the first reinforcement part 112 extending in the distal direction and the shell-shaped body 100 is a smoothly-transitional curved surface. This arrangement makes the free end of the first reinforcing part 112 extending in the distal direction and the shell-shaped body 100 connected to each other have a transition curved surface, the side of the first reinforcing part 112 adjacent to the teeth in the maxillary anterior tooth area is connected to the side of the receiving space 111, at this time, the side of the first reinforcing part 112 adjacent to the teeth in the maxillary anterior tooth area is one end in the mesial direction, the free end of the first reinforcing part 112 extending in the distal direction is one side extending in the opposite direction to the one end in the mesial direction relative to the side of the first reinforcing part 112 adjacent to the teeth in the maxillary anterior tooth area, and the free end of the first reinforcing part 112 extending in the distal direction may be a free end connected across the anterior tooth areas on the left and right sides of the shell-shaped body 100, and the connection between the free end and the left and right sides of the shell-shaped body 100 is a smoothly transition curved surface, which makes the shell-shaped dental appliance 10 contact with the oral cavity rounder or smoother, the foreign body feeling in the oral cavity is less, and the wearing of the patient is more comfortable. In one embodiment, the first reinforcement part 112 extends from the anterior teeth area of the shell-shaped body 100 along the free end of the sidewall of the accommodating space 111 in the distal direction, and the joints of the first reinforcement part 112 and the cavities of the left and right sides of the shell-shaped body 100 for accommodating the first premolars are smooth and transitional curved surfaces. More specifically, the junction between the first reinforcing part 112 and the proximal end surface of the cavity for accommodating the first premolar on the left and right sides of the shell-shaped body 100 is a smooth transition curved surface, that is, the junction between the first reinforcing part 112 and the left and right sides of the shell-shaped body 100 is the junction from the proximal end surface of the cavity for accommodating the first premolar, and more specifically, the form: since the first premolar has buccal cusp and lingual cusp on the occlusal surface and the cuspid has only one cusp on the occlusal surface, when the smooth transition is performed, the connection width (i.e. the width of the first reinforcement part 112 in the sagittal direction near and far) at the connection position of the first reinforcement part 112 and the shell-shaped body 100 can partially fill the problem of the unsmooth connection caused by the difference between the cuspid and the occlusal surface of the first premolar, i.e. the first reinforcement part 112 is connected with the mesial end surface of the shell-shaped body 100 for accommodating the first premolar, and the part for filling the cusp area or the occlusal surface of the rest premolar is compensated, so as to achieve the smooth transition of the connection position.

In some embodiments of the invention, the width of the first reinforcement part 112 in the proximal-distal direction is 2-5mm in the sagittal section, and the width is set so that the lower jaw contacts the upper jaw first, thereby guiding the lower jaw into the accommodating space 111, and making the lower jaw tend to move in the sagittal direction to the target occlusion position relative to the position of the upper jaw. In addition, the setting of this width makes the sagittal adjustment portion 110 cover the width at the upper jaw less, not only makes the patient wear in the mouth foreign body feel less, still makes things convenient for the preparation of shellliform tooth to rectify ware 10, reduces the upper jaw information that utilizes the upper jaw, when the intraoral information of patient, can use traditional intraoral mode of getting, later scans and obtains corresponding digital information, also can use intraoral scanner to carry out the acquireing of intraoral information, above-mentioned two kinds of modes of acquireing only utilize upper jaw tooth and partial gum information can accomplish the design and the preparation of corresponding product.

In some embodiments of the present invention, as shown in fig. 1, the first reinforcement portion 112 is provided on a tooth side away from the anterior maxillary dental area to substantially conform to the curvature of the anterior dental area. Specifically speaking, it is unanimous with the bending radian in tooth anterior teeth district that basically coincide to include that first rib keeps away from one side of upper jaw anterior teeth district tooth, and first rib keeps away from one side of upper jaw anterior teeth district tooth and is similar with the bending radian in tooth anterior teeth district, and wherein similar bending radian's change interval is 10 degrees, in order to ensure that first rib keeps away from one side of upper jaw anterior teeth district tooth and is similar to the curved form of indent formula towards incisor direction with anterior teeth district tooth, this kind of mode of setting reserves relatively great accommodation space for the tongue body after the patient wears, and the tongue body foreign matter sense is less when carrying out the adjustment of upper and lower jaw position relation.

In some embodiments of the present invention, the elastic modulus of the first reinforcement part 112 is greater than that of the shell-shaped body 100, and the elastic modulus of the first reinforcement part 112 is greater than that of the shell-shaped body 100, so as to at least partially offset the deformation of the shell-shaped body 100 caused by the engagement. When the upper jaw and the lower jaw are occluded, the lower jaw is firstly in occlusion contact with the first reinforcing part 112, and at this time, the first reinforcing part 112 needs to generate strength enough for supporting the generated occlusion force, so that the elastic modulus of the first reinforcing part 112 is greater than that of the shell-shaped body 100, and meanwhile, the elastic modulus of the shell-shaped body 100 is smaller, so that a patient can wear the shell-shaped body more comfortably. In one embodiment, the hardness of the first reinforcing portion 112 is greater than that of the shell-shaped body 100, and more specifically, the shore hardness of the first reinforcing portion 112 is 65D-80D, for example, the shore hardness of the first reinforcing portion 112 is any one of 65D, 70D, 75D and 80D or other points in the interval, or any two points in the range of the vertex of the interval; the shore hardness of the shell-shaped body 100 is 50D-75D, for example, the shore hardness of the shell-shaped body 100 is any one of 50D, 55D, 60D, 65D, 70D and 75D or other points in the interval, or any two points are in the range of the peak of the interval; this arrangement enables the first reinforcing portion 112 to generate a sufficient biting force for supporting the lower jaw when the upper and lower jaws are bitten, thereby reducing biting deformation of the first reinforcing portion 112 and the shell-shaped body 100. In another embodiment, as shown in fig. 6, the first reinforcing portion 112 is a multi-layer structure, wherein at least one reinforcing layer 1121 at least partially covers the base layer, wherein the base layer and the reinforcing layer 1121 may be the same material or different materials, the base layer may be the same material as the shell-shaped body 100 and/or the accommodating space 111, or the base layer, the shell-shaped body 100 and/or the accommodating space 111 may be integrally formed. In one preferred embodiment, the elastic modulus of the reinforcing layer 1121 is greater than that of the base layer, that is, the reinforcing layer 1121 can play a role of supporting the occlusion deformation of the shell-shaped body 100 caused by the occlusion force generated when the upper jaw and the lower jaw are occluded. In the above embodiment, the thickness of the first reinforcing part 112 is 0.7-2.0mm, such as any one of 0.7mm, 1.0mm, 1.5mm or 2.0mm or other points within this interval, or any two points are within the range of the interval vertex; the thickness of the shell-shaped body is 0.5-1.0mm, such as any one of 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1.0mm or other points in the interval, or the range of the vertex of the interval from any two points; within the above interval, the overall thickness of the first reinforcement part 112 formed in a multi-layered structure is greater than that of the shell-shaped body 100, and the interaction of the shell-shaped body 100 accommodating the teeth and the teeth while ensuring that the first reinforcement part 112 has a strength sufficient to support the generated occlusal force makes the wearing of the patient more comfortable.

In some embodiments of the present invention, the first reinforcement part 112 is made of the same material as the shell-shaped body 100, such as one of PETG, PC or TPU, and may be made of other polymer materials that can be used in the oral cavity and have safety for using medical devices, so that the effect of straightening teeth is generated while the wearing is safe; in other embodiments, the first reinforcement part 112 and the shell-like body 100 are respectively made of different single materials or different multi-layer composite materials, and more specifically, when the first reinforcement part 112 and the shell-like body 100 are made of different single materials, any two of PETG, PC or TPU may be combined; the first reinforcing part 112 and the shell-shaped body 100 may be made of different materials during design or manufacture, for example, the shell-shaped body 100 may be made of TPU, the first reinforcing part 112 may be made of PETG, and the membrane manufactured by hot press molding may be made of different materials locally, or different materials may be used for a local area during 3D direct printing. When the first reinforcing part 112 is a multi-layer composite material different from the shell-shaped body 100, the first reinforcing part 112 may be a multi-layer composite material composed of any combination of PETG, PC or TPU, and the shell-shaped body 100 is a single material; alternatively, the first reinforcement portion 112 may be a single material, and the shell-shaped body 100 may be a multi-layer composite material; it is also possible that both the first reinforcement 112 and the shell-like body 100 are multilayer composite materials; more specifically, the first reinforcing part 112 is a multi-layer composite material different from the shell-shaped body 100, such as the shell-shaped body 100 is a single-layer structure or a multi-layer composite structure, and the first reinforcing part 112 is a multi-layer composite material, wherein one layer of the multi-layer structure of the first reinforcing part 112 may be the same as or different from the shell-shaped body 100, such as the first reinforcing part 112 is composed of a two-layer composite material, specifically, PETG and TPU, and the material of the shell-shaped body 100 is PETG; also as the first reinforcement portion 112 is a two-ply composite composition, specifically PETG and TPU, the shell-like body 100 is a two-ply composite composition, specifically PETG and PC. The above list is only a partial preferred embodiment, and various material combinations capable of achieving the effects of the present invention are within the scope of the present invention, and are not described herein again.

In some embodiments of the present invention, as shown in fig. 7 and fig. 8 (sagittal section, i.e. section along B-B'), one end of the first reinforcement portion 112 of the shell-shaped dental appliance 20 in the distal direction is further provided with a second reinforcement portion 113, and forms a receiving space with the first reinforcement portion 112, and the first reinforcement portion 112 and the second reinforcement portion 113 are disposed at a second included angle; the first reinforcement portion 112 extends distally in the sagittal cross-sectional direction, and the second reinforcement portion 113 extends at a second angle with respect to the first reinforcement portion 112, i.e., the first reinforcement portion 112 and the second reinforcement portion 113 extend at different directions, in a preferred embodiment, the second angle is β, and β is greater than or equal to 90 ° and less than 180 °; in this arrangement, the second reinforcing portion 113 is a plane or curved structure with a radian, and the first reinforcing portion 112 is a plane or curved structure with a radian; when the first reinforcing part 112 and the second reinforcing part 113 are both flat, the included angle between the first reinforcing part 112 and the second reinforcing part 113 is a second included angle formed by the extending directions of the first reinforcing part and the second reinforcing part; when the first reinforcing part 112 and the second reinforcing part 113 are curved surfaces with radian, the included angle formed by the two is a second included angle formed by the tangent of the connecting point to the extending direction of the two; when one of the first reinforcing part 112 or the second reinforcing part 113 is a curved surface having a radian and the other is a plane, an included angle formed by the curved surface having the radian and the plane is a second included angle formed by a tangential direction of a connection part of the curved surface having the radian and the plane and an extending direction of the plane. The second included angle β is greater than or equal to 90 ° and less than 180 °, in this arrangement, when the second included angle β is 90 °, that is, the connecting position between the first reinforcing portion 112 and the second reinforcing portion 113 is perpendicular, when the upper and lower jaws perform the occlusion action, the teeth in the anterior mandibular area gradually slide into the accommodating space 111 from the contact area with the first reinforcing portion 112, and the second reinforcing portion 113 and the first reinforcing portion 112 enclose to form an accommodating space, in the sagittal cross-sectional direction, the second reinforcing portion 113 provides a direct acting force along the long axis direction of the teeth or an acting force decomposed in this direction, so as to enhance the supporting effect of the first reinforcing portion 112 when the upper and lower jaws are occluded, and assist in partially offsetting the deformation of the shell-shaped body caused by the occlusion. In order to provide a stronger supporting effect, in some preferred embodiments, as shown in fig. 9-11 (sagittal section, i.e. section along C-C'), a reinforcing block 114 is further disposed in the receiving space formed by the enclosure, wherein the reinforcing block 114 is a reinforcing block that can be used for a material used in a medical device mouth, such as a polymer material structure formed by filling medical polymer resin or pre-molded. In order to achieve a stable relationship of the reinforcing block 114 in the housing space; as shown in fig. 10 and 11, in a preferred embodiment, the second reinforcing part 113 of the shell-shaped dental appliance 30 is provided with a convex bubble 1131 protruding in the distal direction, and a convex portion matching with the convex bubble 1131 is further provided at a position corresponding to the convex bubble 1131 at a contact area between the reinforcing block 114 (reinforcing block) and the second reinforcing part 113, so that the reinforcing block 114 is stably placed in the accommodating space formed by the first reinforcing part 112 and the second reinforcing part 113, and the reinforcing block 114 is not mistakenly eaten by a patient and unnecessary medical accidents are not caused because the combination of the reinforcing block 114 and the second reinforcing part is unstable. Of course, the above concave-convex matching is a preferred embodiment, and the remaining structures that can increase the mutual stability of the second reinforcing portion 113 and the reinforcing block 114 are within the protection scope of the present invention, and are not described herein again.

In some embodiments of the present invention, the accommodating space 111 is a structure that is continuously or partially continuously distributed on the lingual side of the teeth in the anterior maxillary dental area and is formed to be concave in the maxilla direction, and such a concave structure can effectively accommodate at least a part of the teeth in the anterior mandibular dental area, so as to adjust the position of the teeth in the anterior mandibular dental area relative to the maxilla in the sagittal direction to the target occlusion position; in addition, when the accommodating space 111 is a structure formed by continuously distributing the accommodating space 111 on the lingual side of the anterior maxillary dental area and forming the concave structure in the maxillary direction, as shown in fig. 12, the concave structure formed by the accommodating space 111 can be regarded as a continuous ridge-shaped structure, which can reduce the deformation generated in the lateral and sagittal directions of the bucco-lingual direction or along the sagittal direction of the shell-shaped body 100, more specifically, when the upper and lower jaws are occluded and the teeth in the anterior mandibular dental area are in contact with the shell-shaped appliance, the teeth in the anterior mandibular dental area act on the first reinforcing part 112 of the shell-shaped appliance, and then enter the target position, i.e., enter the target positionIn the accommodating space 111, the lower jaw generates an occlusal force towards the upper jaw, and if the strength of the first reinforcement part 112 or the accommodating space 111 contacting with the lower jaw is lower, the shell-shaped body 100 generates a sagittal deformation quantity, such as stretching of the lingual side of the anterior dental area of the shell-shaped body 100, which may indirectly cause the anterior dental area teeth correspondingly wrapped by the shell-shaped body 100 to generate a depression effect; in another case, the deformation in the bucco-lingual direction may be generated, for example, when the lower jaw and the first reinforcement part 112 contact each other, the shell-shaped body 100 may generate the sagittal deformation, and at the same time, both sides of the teeth in the posterior dental area covered by the shell-shaped body 100 may move to the lingual side, and the unexpected lingual inclination or arch contraction may be generated corresponding to the covered teeth. When the accommodating space 111 is a structure formed by partially and continuously distributing the accommodating space 111 in the direction from the lingual side of the teeth in the anterior maxillary dental area to the gingival, the accommodating space 111 can be a structure formed by a plurality of structures dispersed in the direction from the lingual side of the teeth in the anterior maxillary dental area to the gingival, the structure formed by the inner recess can accommodate at least one part of the area of the teeth in the anterior mandibular dental area, for example, an area adjacent to the incisal margin, for example, the accommodating space 111 is provided with 6 concave structures for dispersedly accommodating two middle incisors, two lateral incisors and two cuspids in the anterior mandibular dental area, and the 6 concave structures are matched with the corresponding teeth of the mandible or the appliance for wrapping the corresponding teeth of the mandible. In one preferred embodiment, the concave-shaped structure is an arch structure, and the arch structure is used for accommodating a part of teeth in the mandibular anterior tooth area, which is adjacent to the incisal margin, when the arch structure is contacted with the teeth in the mandibular anterior tooth area; the anterior mandibular area teeth are now positioned in the sagittal direction relative to the upper jaw to the target bite position, i.e., the vertical distance that the upper teeth overlie the lower teeth does not exceed the mandibular incisor labial surface 1/3, matching the target bite position of the lower jaw. More specifically, the height difference Δ h of the accommodating space 111 in the sagittal section along the long axis direction of the tooth body is 1/4-1/2 of the length of the dental crown in the long axis direction of the teeth in the anterior mandibular area, at this time, corresponding design can be performed according to the target position for correction of the patient, so that when the lower jaw is occluded to the final target correction position, the vertical distance of the upper jaw covering the lower jaw does not exceed the labial surface cut 1/3 of the lower jaw incisor, and the lower jaw is deeply covered

And (5) correcting the patient. In another embodiment, the width of the receiving space 111 in the sagittal cross section along the proximal-distal direction is 1.5-4.0mm, and the width range is matched with the width of the corresponding sagittal cross section of the anterior mandibular teeth along the proximal-distal direction, i.e. the width range can better accommodate the corresponding width of the anterior mandibular teeth, so that the anterior mandibular teeth can be kept stable in the receiving space 111, i.e. the target bite position of the lower jaw is stable, to ensure the relative position relationship between the upper jaw and the lower jaw.

In an embodiment of the present invention, the elastic modulus of the accommodating space 111 is greater than the elastic modulus of the shell-shaped body 100, wherein when the lower jaw is in contact with the accommodating space 111 where the upper jaw is in stable contact during occlusion of the upper jaw and the lower jaw, the accommodating space 111 needs to generate a strength sufficient to support the generated occlusion force, so the elastic modulus of the accommodating space 111 is greater than the elastic modulus of the shell-shaped body 100, and meanwhile, the elastic modulus of the shell-shaped body 100 is smaller, so that the patient can wear the shell-shaped body more comfortably, it should be noted that the shell-shaped body 100 can generate a geometric structure that the shell-shaped body wraps the teeth to generate relative displacement, or can only wrap the teeth. In one embodiment, the hardness of the accommodating space 111 is greater than that of the shell-shaped body 100, and more specifically, the shore hardness of the accommodating space 111 is 65D-80D, for example, the shore hardness of the accommodating space 111 is any one of 65D, 70D, 75D, or 80D or other points in the interval, or any two points are in a range of an interval vertex; the shore hardness of the shell-shaped body 100 is 50D-75D, for example, the shore hardness of the shell-shaped body 100 is any one of 50D, 55D, 60D, 65D, 70D and 75D or other points in the interval, or any two points are in the range of the peak of the interval; the arrangement mode can ensure that the accommodating space 111 can generate enough occlusal force for supporting the lower jaw to contact when the upper jaw and the lower jaw are occluded, so that the occlusion deformation generated by the accommodating space 111 and the shell-shaped body 100 is reduced. In another embodiment, the accommodating space 111 is a multi-layer structure, which includes a base layer and at least one reinforcing layer, wherein the base layer and the reinforcing layer may be made of the same material or different materials, and the base layer may be made of the same material as the shell-shaped body 100, or may be formed integrally with both the base layer and the shell-shaped body 100. In one preferred embodiment, the elastic modulus of the reinforcing layer is greater than that of the base layer, that is, the reinforcing layer can prevent the occlusion force from causing occlusion deformation to the shell-shaped body 100 when the upper jaw and the lower jaw are occluded. In the above embodiment, the thickness of the accommodating space 111 is 0.7-2.0mm, such as any one of 0.7mm, 1.0mm, 1.5mm or 2.0mm or other points in the interval, or any two points are in the range of the top point of the interval; the thickness of the shell-shaped body is 0.5-1.0mm, such as any one of 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1.0mm or other points in the interval, or any two points are in the range of the top point of the interval; within the above range, the overall thickness of the accommodating space 111 formed by the multi-layer structure is greater than the thickness of the shell-shaped body 100, so that the accommodating space 111 has a strength enough to support the generated occlusion force, and the interaction between the shell-shaped body 100 for accommodating teeth and the teeth while the deformation of the shell-shaped body caused by occlusion is partially offset, so that the patient can wear the shell-shaped body more comfortably.

In an embodiment of the present invention, as shown in fig. 13, the side walls of the accommodating space 111 include a mesial accommodating side wall 1112 and a distal accommodating side wall 1111, wherein the mesial accommodating side wall 1112 is connected to the lingual side of the anterior dental region of the shell-shaped body 100 at least partially on the side adjacent to the maxillary incisal edge, and the mesial accommodating side wall 1112 is connected to an end of the distal accommodating side wall 1111 at least partially on the side away from the maxillary incisal edge; the other end of the distal receiving side wall 1111 is at least partially connected to the first reinforcement portion 112. In one embodiment, the mesial accommodating sidewall 1112 is continuously connected to the lingual side of the anterior dental area of the shell-shaped body 100 on the side adjacent to the maxillary incisal edge, so as to enhance the stability of the accommodating space 111 during occlusion of the upper and lower jaws; in another embodiment, the mesial receiving sidewall 1112 is connected to the lingual side of the anterior dental area of the shell-shaped body 100 on a side adjacent to the maxillary incisal edge, and specifically, may be connected to the spaced portions to form spaced gaps or spaced holes, which can increase the air permeability of the patient while ensuring the stability of the occlusion between the upper and lower jaws, and prevent the growth of bacteria in the patient's mouth due to the wearing in a long-term closed environment. In other embodiments, the side of the mesial accommodating sidewall 1112 far from the maxillary incisal edge is continuously connected with one end of the distal accommodating sidewall 1111, so as to enhance the stability of the accommodating space 111 during the occlusion of the upper and lower jaws; in another embodiment, the side of the mesial receiving sidewall 1112 far from the maxillary incisal edge is connected with an end portion of the distal receiving sidewall 1111 to form a gap or a hole, which can increase the air permeability of the patient while ensuring the stability of the occlusion of the upper and lower jaws, thereby preventing the growth of bacteria in the patient's mouth caused by wearing in a long-term closed environment. In other embodiments, the other end of the distal accommodating sidewall 1111 is continuously connected to the first reinforcement portion 112, so as to enhance the stability of the accommodating space 111 during the occlusion of the upper jaw and the lower jaw; in another embodiment, the other end of the distal receiving side wall 1111 is partially connected to the first reinforcement portion 112 to form a gap or a hole, which can increase the ventilation of the patient while ensuring the stability of the upper and lower jaws occlusion, thereby preventing the growth of bacteria in the patient's mouth due to the wearing in a long-term closed environment. The various embodiments can be used for carrying out continuous connection or partial connection targeted selection of specific parts according to actual case correction requirements, so that the correction effect is achieved, and meanwhile, the wearing comfort of a patient is improved and the oral environment is improved. Of course, a flat or curved structure may be disposed between the proximal receiving sidewall 1112 and the distal receiving sidewall 1111 to match the incisal margins or ridges of the teeth in the anterior mandibular area to better accommodate and stabilize the relative position of the anterior mandibular area.

In an embodiment of the present invention, the distal receiving side wall 1111 is a guide surface having an inclination angle for guiding the lower jaw to slide into the receiving space 111, wherein the guide surface may be a guide plane, a guide curved surface, or a combination of the guide plane and the guide curved surface; when the guide surface is a plane, as shown in fig. 13, after the lower anterior mandibular area teeth contact the first reinforcing part 112, the lower anterior mandibular area teeth slide into the receiving space 111 by the guiding action of the guide surface, thereby guiding the position of the lower anterior mandibular area teeth relative to the upper jaw to adjust in the sagittal direction to the target occlusal position. In another embodiment, the guide surface may be a curved guide surface having a curvature, the curved guide surface may be a curved structure having only one curvature, or a curved structure formed by connecting a plurality of curvatures, or a structure formed by connecting a plane and a curved surface, such as a structure in which the plane is connected with the first reinforcing part 112 or a structure in which the curved surface is connected with the first reinforcing part 112, and the above-mentioned structures may be used to guide the position of the teeth in the anterior mandibular area to the target occlusion position in the sagittal direction, which is within the scope of the present invention, and the specific connection position relationship of various combinations is not limited herein. In a preferred embodiment of the present invention, when the distal accommodating sidewall 1111 is a guiding plane or a part of the distal accommodating sidewall 1111 is a guiding plane, in a sagittal cross section, an inclination angle is a third included angle γ formed between the distal accommodating sidewall 1111 and the jaw plane, wherein γ is greater than or equal to 30 ° and less than or equal to 80 °, the formed third included angle γ is an acute angle, the inclination angle can guide the teeth of the mandibular anterior tooth area to slide into the accommodating space 111, and the teeth slide to the top end of the accommodating space 111 (i.e., the farthest position of the accommodating space 111 from the incisal ridges of the teeth of the maxillary anterior tooth area) and the position in the accommodating space 111 is relatively stable. In another preferred embodiment of the present invention, a stabilizing surface is further disposed on the proximal accommodation sidewall 1112, and the stabilizing surface has an inclination angle for stabilizing the lower jaw in the accommodation space 111; more specifically, the stable surface is a stable plane, a stable curved surface, or a combination of a stable plane and a stable curved surface, the stable curved surface may be a curved surface structure having only one arc, or a curved surface structure formed by connecting multiple arcs, or a structure formed by connecting a plane and a curved surface, such as whether the plane is connected with the lingual side of the anterior tooth area of the shell-shaped body 100 or the curved surface is connected with the lingual side of the anterior tooth area of the shell-shaped body 100, the above-mentioned structure can stabilize the position of the anterior tooth area of the lower jaw relative to the upper jaw and adjust to the target occlusion position in the sagittal direction, and the specific connection position relationship of various combination forms is not limited herein. In a preferred embodiment of the invention, when the mesial receiving side wall is a guide plane or a part of the mesial receiving side wall is a guide plane, in the sagittal section, the inclination angle is a fourth included angle δ formed between the mesial receiving side wall and the jaw plane, wherein δ is greater than or equal to 30 degrees and less than or equal to 80 degrees; the fourth included angle δ is an acute angle, and the inclination angle thereof can stabilize that the teeth in the mandibular anterior tooth area cannot slide in the accommodating space 111 and stabilize to the top end of the accommodating space 111 (i.e. the farthest position of the accommodating space 111 from the incisal ridges of the teeth in the maxillary anterior tooth area).

In some embodiments of the present invention, the shell-like body 100 has a geometry that gradually changes a plurality of teeth from an initial position to a target correction position, and specifically, when the shell-like dental appliance is worn by a patient, the shell-like body 100 not only has a function of wrapping the teeth, but also has a function of correcting the teeth, such as an effect of gradually repositioning the teeth from the initial position to the target position while adjusting the position of the teeth in the mandibular anterior dental area relative to the upper jaw in the sagittal direction to the target bite position, and not only improves the correction efficiency in stages, but also improves the correction efficiency for the overall correction scheme, and in a specific correction case, such as for a deep-covered correction case, the shell-like dental appliance has a geometry that gradually changes the teeth from the initial position to the target position

In case of a patient, the patient with a deep mandibular spee curve can utilize the shell-shaped dental appliance to adjust the relation between the upper jaw and the lower jaw, and simultaneously, the shell-shaped body 100 on the shell-shaped dental appliance assists in pressing the lower front teeth or lifting the teeth in the rear tooth area to level off the mandibular spee curve, so as to achieve the effect of synchronously correcting and correcting the shape. In other embodiments, the effect of shell-like body 100 can also only be for wrapping up the tooth to do not produce to the tooth and rectify the effect, and this kind of mode of setting can strengthen the travelling comfort that the patient wore, only produces and adjusts the anterior mandibular tooth zone tooth and upwards adjusts to target bite position in the sagittal position and rectify the effect for the position of upper jaw, and the effect is rescued to other teeth not production, and the pertinence of rectifying is stronger, alleviates shell-like body 100 simultaneously and rectifies the uncomfortable sense of production to the tooth.

In some embodiments of the present invention, the shell-shaped body 100, the accommodating space 111, the first reinforcing part 112 and/or the second reinforcing part 113 are integrally formed or separately formed. More specifically, in one embodiment, the shell-shaped body 100, the accommodating space 111 and the first reinforcing part 112 are integrally formed, the shell-shaped body 100, the accommodating space 111 and the first reinforcing part 112 can be integrally formed by hot pressing and then cut into structures according to actual correction requirements or directly formed by 3D printing, when the integrally formed structure is adopted, the manufacturing steps are simple, the wearing of a patient is convenient, and the shell-shaped body 100, the accommodating space 111 and the first reinforcing part 112 are tightly connected so that the wearing safety is high, and unnecessary damage caused by mistaken eating of the patient due to insecurity among the shell-shaped body 100, the accommodating space 111 and the first reinforcing part 112 is avoided. In another embodiment, the shell-shaped body 100, the accommodating space 111 and the first reinforcing part 112 are formed by separate molding, and the shell-shaped body 100, the accommodating space 111 and the first reinforcing part 112 can be formed by separate connection through adhering, magnetic attraction, clamping and other structures; adopt components of a whole that can function independently shaping structure, simple to operate can select the shell body 100, accommodation space 111 and the first rib 112 that are fit for the different effects of correcting that can produce in patient's own mouth according to patient's intraoral actual conditions and install for the patient has individualized customized to the treatment. In other embodiments, the connection form of the shell-shaped body 100 and/or the accommodating space 111 and/or the first reinforcing part 112 and/or the second reinforcing part 113 is similar to the formation form of the above-mentioned integrally-molded structure or separately-molded structure of the shell-shaped body 100, the accommodating space 111 and the first reinforcing part 112, and thus the description thereof is omitted.

The invention also provides a dental appliance system comprising a plurality of shell dental appliances, wherein at least one of the plurality of shell dental appliances is a shell dental appliance as described in any of the above embodiments, the plurality of shell dental appliances having a geometry that gradually repositions a tooth from an initial position to a target position. More specifically, this rectify in the system can only be single jaw and rectify, if only for the upper jaw rectify, a plurality of shell form tooth that use at the in-process of rectifying are rescued the effect that the tooth from initial position relocates to the target location gradually, if a plurality of shell form tooth are rescued the ware and are worn at the upper jaw tooth, sagittal adjustment portion 110 can adjust the position of lower jaw anterior teeth area tooth for the upper jaw upwards at the sagittal adjustment to the target bite position, shell form body 100 has the geometry that makes the tooth gradually relocate to the target location from initial position simultaneously, make the patient's tooth rectify the tooth when carrying out the adjustment of upper and lower jaw position, realize that the orthopedics is rectified and rectify and go on in step, under the prerequisite that improves patient and wear the comfort level, improve and rectify efficiency.

In some embodiments of the invention, a series of different shell-shaped teeth are corrected to gradually move teeth from an initial position to a target correction position, wherein the initial position is a relative position of a digital model acquired when a patient is hospitalized, the target correction position is a position embodiment of a final correction effect performed by a clinician and a medical designer according to the appeal and the oral condition of the patient, the oral conditions of different patients are different due to individual differences, the teeth need to be gradually moved from the initial position to the target position, and a series of different shell-shaped teeth correction devices are needed to correct and wear the teeth in the process.

The invention also provides an orthodontic system comprising a plurality of groups of orthodontic sleeves, wherein the groups of orthodontic sleeves comprise at least one group of orthodontic sleeves, and the groups of orthodontic sleeves have geometric shapes which enable teeth to be gradually repositioned from initial positions to target positions. A set of orthodontic kits in this embodiment is described in detail below:

the tooth correcting set comprises an upper jaw tooth correcting device and a lower jaw tooth correcting device, wherein the upper jaw tooth correcting device is any one of the shell-shaped teeth correcting devices in the above embodiment, and the lower jaw tooth correcting device is a lower jaw shell-shaped tooth correcting device worn on a jaw of the upper jaw tooth correcting device. When the shell-shaped dental appliance is worn on the upper jaw, the shell-shaped body 100 wraps the teeth of the upper jaw, and the sagittal adjustment part 110 adjusts the position of the teeth of the lower jaw anterior dental area relative to the upper jaw in the sagittal direction to the target occlusion position; meanwhile, the mandibular shell-shaped tooth appliance is worn on the mandibular teeth to wrap the mandibular teeth, and can be only a shell-shaped tooth appliance wrapping the mandibular teeth, or a geometric structure which can gradually reposition the mandibular teeth from the initial position to the target correction position. The upper jaw and the lower jaw are simultaneously corrected, and the patient with a deep mandibular spee curve can press the lower front teeth or lift the teeth in the back dental area to level the jaw curve, so that the upper jaw and the lower jaw are corrected while the relation between the upper jaw and the lower jaw is adjusted, and the correction is synchronously performed.

In some embodiments of the invention, a series of different shell-shaped tooth correction kits can gradually move teeth from an initial position to a target correction position, wherein the initial position is a relative position of a digital model acquired when a patient is hospitalized, the target correction position is a position embodiment of a final correction effect performed by a clinician and a medical designer according to the appeal and the oral condition of the patient, and due to individual differences, the oral conditions of different patients are different, the teeth need to be gradually moved from the initial position to the target position, and a series of different shell-shaped tooth correction devices are needed to wear the teeth in the process.

By wearing the shell-shaped orthodontic device, the orthodontic kit, the orthodontic system or the orthodontic system in the above embodiments, the relative positions of the upper and lower jaws of the patient are adjusted from the initial state shown in fig. 14 to the target orthodontic position shown in fig. 15.

The invention also provides a preparation method of the shell-shaped dental appliance, the design method related in any embodiment carries out corresponding preparation on the designed dental appliance, and the preparation method comprises the following steps: a preparation method of firstly carrying out hot press molding and then cutting or a direct 3D printing method.

In some embodiments of the present invention, the manufacturing module in the manufacturing method may be an additive manufacturing machine, and the dental appliance is manufactured by using an additive manufacturing technology, that is, the obtained dental appliance finite element digital model meeting the requirements is directly printed into the dental appliance by using a 3D printing technology, and the 3D printing technology may be SLA (stereo lithography) or DLP (digital light projection).

In some embodiments of the present invention, the manufacturing module in the manufacturing method may also be a 3D printing device, a film pressing device, a cutting device, a polishing device, and a cleaning and disinfecting device, and the specific manufacturing process includes firstly directly printing a digital finite element model of the digital dental model meeting the requirements by a 3D printing technology, secondly performing a film pressing operation on the printed 3D dental model, and finally performing steps of cutting, polishing, cleaning, disinfecting, etc. on the film-pressed dental appliance, thereby finally manufacturing the dental appliance.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A shell-shaped tooth appliance comprises a shell-shaped body, wherein the shell-shaped body is provided with a cavity for accommodating a plurality of upper and lower jaw teeth, and is characterized in that the lingual side of the anterior dental area of the shell-shaped body is also provided with a sagittal adjusting part which can adjust the relation between the upper and lower jaws and can at least partially offset the deformation of the shell-shaped body caused by occlusion, and at least part of the sagittal adjusting part is connected with the lingual side of the anterior dental area of the shell-shaped body; the sagittal adjustment part has a geometric structure which can stabilize the occlusion relation of the upper jaw and the lower jaw, reduce the occlusion deformation quantity generated by the shell-shaped body and adjust the position of the teeth in the lower jaw anterior tooth area relative to the upper jaw from the sagittal direction to the target occlusion position.

2. The shell-shaped dental appliance of claim 1, wherein the sagittal adjustment portion comprises a side wall which is formed by extending and bending a lingual side of the anterior dental area of the shell-shaped body to form an accommodating space and a first reinforcement portion which at least partially counteracts deformation of the shell-shaped body caused by occlusion; the accommodating space at least accommodates the incisal margin of teeth in the anterior mandibular teeth area or a part of the incisal margin, and one end of the first reinforcing part is connected with one end of the side wall far away from the shell-shaped body.

3. The shell-shaped dental appliance of claim 2, wherein, in a sagittal cross section along a long axis of the dental body, a region of the first reinforcement portion contacting the lower jaw is located closer to a incisal edge of the anterior maxillary dental area than a region of the receiving space contacting the lower jaw.

4. The shell-shaped dental appliance of claim 3, wherein, in a sagittal cross-section, a first angle α is formed at the junction of the first reinforcement and the side wall of the receiving space, wherein α is greater than or equal to 90 ° and less than or equal to 160 °.

5. The shell-shaped dental appliance of claim 2, wherein the junction of the first reinforcement portion and the shell-shaped body is a smoothly transitioning curved surface.

6. The shell-shaped dental appliance of claim 5, wherein the first reinforcement is in smooth transition with the mesial surface of the cavity on the left and right sides of the shell-shaped body that receives the first premolar.

7. The shell-shaped dental appliance of claim 6, wherein the first reinforcement portion substantially conforms to the curvature of the anterior teeth area on a side of the teeth away from the anterior maxillary teeth area.

8. The shell-shaped dental appliance of claim 2, wherein the first reinforcement has a mesial-distal width of 2-5mm in sagittal cross-section.

9. The shell-shaped dental appliance of claim 2, wherein the receiving space is a groove that is continuously or partially continuously disposed on the lingual side of the maxillary anterior dental region and is concave toward the maxilla, and the groove is capable of reducing the amount of deformation of the shell-shaped body occurring bucco-lingual or sagittal.

10. The shell-shaped dental appliance of claim 2, wherein the height difference of the receiving space in the sagittal section along the long axis of the tooth body is 1/4-1/2 of the length of the tooth crown in the long axis direction in the mandibular anterior tooth zone.

11. The shell-shaped dental appliance of claim 2, wherein the receiving space has a width in the sagittal cross-section in the mesial-distal direction of 1.5-4.0 mm.

12. The shell dental appliance of any one of claims 2-8, wherein the first reinforcement has a modulus of elasticity greater than the modulus of elasticity of the shell body.

13. The shell-shaped dental appliance of any one of claims 2-8, wherein the first reinforcement portion has a hardness greater than a hardness of the shell-shaped body.

14. The shell-shaped dental appliance of claim 13, wherein the first reinforcement portion has a shore hardness of 65D to 80D and the shell-shaped body has a shore hardness of 50D to 75D.

15. The shell dental appliance of any one of claims 2-8, wherein the first reinforcement portion is a multi-layer structure comprising a base layer and a reinforcement layer, wherein at least one reinforcement layer at least partially overlies the base layer.

16. The shell-shaped dental appliance of claim 15, wherein the first reinforcement formed by the multi-layered structure has an overall thickness greater than a thickness of the shell-shaped body.

17. The shell dental appliance of claim 15, wherein the reinforcing layer has a modulus of elasticity greater than the modulus of elasticity of the base layer.

18. The shell-shaped dental appliance of any one of claims 2-8, wherein the first reinforcement portion has a thickness of 0.7-2.0mm and the shell-shaped body has a thickness of 0.5-1.0 mm.

19. The shell-shaped dental appliance of any one of claims 2-8, wherein the first reinforcement, the receiving space and the shell-shaped body are integrally formed.

20. The shell-shaped dental appliance of claim 2, wherein a second reinforcing portion is further disposed at one end of the first reinforcing portion extending in the distal direction, the first reinforcing portion and the second reinforcing portion enclose a receiving space, the first reinforcing portion and the second reinforcing portion form a second included angle β, and β is greater than or equal to 90 ° and less than 180 °.

21. The shell-shaped dental appliance of claim 20, wherein the receiving space receives a reinforcing block therein.

22. The shell-shaped dental appliance of claim 21, wherein the second reinforcing portion has a male and female structure that cooperates with the reinforcing block.

23. The shell-shaped dental appliance of claim 22, wherein the second reinforcement portion is provided with a convex bubble protruding in a distal direction, and a contact area of the reinforcing block and the second reinforcement portion corresponding to the convex bubble is further provided with a convex portion engaged with the convex bubble.

24. The shell-shaped dental appliance of claim 2, wherein the side walls of the accommodating space comprise a mesial accommodating side wall and a distal accommodating side wall, the mesial accommodating side wall is at least partially connected with the lingual side of the anterior dental area of the shell-shaped body on the side close to the maxillary incisal edge, and the mesial accommodating side wall is at least partially connected with one end of the distal accommodating side wall on the side away from the maxillary incisal edge; the other end of the far middle accommodating side wall is at least partially connected with the first reinforcing part.

25. The shell-shaped dental appliance of claim 24, wherein the distal receiving side wall has a guide surface that guides the mandible to slide into the receiving space.

26. The shell-shaped dental appliance of claim 25, wherein the guide surface is a guide plane, a guide curve, or a combination of a guide plane and a guide curve.

27. The shell-shaped dental appliance of claim 26, wherein the angle of inclination is a third angle γ formed between the distal receiving side wall and the jaw plane in a sagittal section when the distal receiving side wall is or is partially the guide plane, wherein γ is 30 ° or more and 80 ° or less.

28. The shell-shaped dental appliance of claim 24, wherein the mesial receiving side walls are provided with stabilizing surfaces having an inclined angle that enables the lower jaw to stably bite into the receiving space.

29. The shell-shaped dental appliance of claim 28, wherein the stabilizing surface is a stabilizing flat surface, a stabilizing curved surface, or a combination thereof.

30. The shell-shaped dental appliance of claim 29, wherein the angle of inclination is a fourth angle δ formed between the mesial receiving sidewall and the jaw plane in a sagittal section when the distal receiving sidewall is a guide plane or partially a guide plane, wherein δ is greater than or equal to 30 ° and less than or equal to 80 °.

31. The shell-like dental appliance of claim 1, wherein the shell-like body has a geometry that gradually repositions the maxillary teeth from an initial position to a target correction position.

32. A dental appliance system comprising a plurality of shell dental appliances, wherein at least one of the plurality of shell dental appliances is a shell dental appliance as claimed in any one of claims 1 to 31.

33. A dental appliance kit comprising a maxillary dental appliance and a mandibular dental appliance, wherein the maxillary dental appliance is a shell dental appliance as claimed in any one of claims 1 to 31 and the mandibular dental appliance comprises a mandibular shell body for encasing mandibular teeth.

34. A dental correction system comprising a plurality of sets of dental correction sets, wherein the plurality of sets of dental correction sets comprises at least one set of dental correction sets as claimed in claim 33 having a geometry that adjusts the position of the anterior mandibular teeth relative to the upper jaw in the sagittal direction to a target bite position while gradually repositioning the teeth from an initial position to the target position.

35. A design method of a shell-shaped tooth appliance is characterized by comprising the following steps:

designing a shell-shaped dental appliance: the shell-shaped dental appliance designed according to any one of the claims 1 to 31 based on the digital dental model comprises a shell-shaped body designed based on the digital dental model body and a sagittal adjusting part at least partially connected with the lingual side of the shell-shaped body, wherein the sagittal adjusting part is designed to have a geometrical structure for adjusting the position of the teeth in the anterior mandibular area relative to the upper jaw from the sagittal direction to the target occlusion position while stabilizing the occlusion relation of the upper and lower jaws and reducing the amount of occlusion deformation generated by the shell-shaped body.

36. A method for manufacturing a shell-shaped dental appliance, which is characterized in that the designed dental appliance is correspondingly manufactured based on the design method of claim 35, and the method for manufacturing the shell-shaped dental appliance comprises the following steps: a preparation method of firstly carrying out hot press molding and then cutting or a direct 3D printing method.