CN221243065U - Tooth correction system - Google Patents

Abstract

The embodiment of the application provides a tooth correction system, which comprises a plurality of first shell-shaped correction devices corresponding to a first correction stage and a plurality of second shell-shaped correction devices corresponding to a second correction stage, wherein the first shell-shaped correction devices comprise a first shell-shaped body and a first adjusting part used for adjusting the vertical occlusion relation of upper and lower jaws, the first shell-shaped correction devices in the first correction stage correspond to the tooth correction state of one correction step, and the shapes of the first shell-shaped correction devices are consistent; the second shell-shaped appliance comprises a second shell-shaped body and a second adjusting part for adjusting the occlusion relation, the plurality of second shell-shaped appliances in the second correcting stage respectively correspond to the tooth correcting states of a plurality of correcting steps, and the rigidity of the first adjusting part in any one of the first correcting stages in the occlusion direction is larger than that of the second adjusting part in any one of the second correcting stages in the occlusion direction.

Description

Tooth correction system

Technical Field

The embodiment of the application relates to the technical field of orthodontic treatment, in particular to a tooth correction system.

Background

The malocclusion is a phenomenon of dental malocclusion caused by congenital genetic factors or acquired environmental factors in the growth and development process of children, and the acquired environmental factors can be diseases, bad oral habits, dysdontia and the like, and can also be factors such as trauma, periodontal disease and the like in the growth and development process. The formation factors and mechanisms of the misjaw deformity are intricate, and the occurrence process of the misjaw deformity may be caused by a single factor and a single mechanism, or may be caused by the combined action of a plurality of factors or mechanisms.

The shell-shaped tooth appliance is a device for treating malocclusion, and adopts safe elastic transparent polymer materials, so that the correction process is almost completed without perception by other people. For cases of facial deformity containing sagittal jaw factors, it is necessary to correct the jaw by jaw reconstruction to achieve mandibular advancement. According to different indications, the existing common jaw reconstruction invisible appliance is divided into two types, namely TB (Tain-block for short) and HB (Herbst for short). And, in cases of deep occlusion, the mandibular steeper Spee curve is corrected with the maxillary compensation curve by means of an appliance with a flat guide, resulting in a coordinated anterior occlusion. In general, the invisible dental appliance is a series of shell-shaped bodies with cavities capable of accommodating teeth, and a patient only needs to wear different invisible dental appliances at different periods according to a design program, so that teeth of an upper jaw or a lower jaw and the teeth of the jaw can move according to a preset design, and the correction is finally completed. However, when the shell-shaped tooth appliance is used for correcting the wrong jaw deformity, the bulge structure for adjusting the wrong jaw deformity is usually a hollow structure, and particularly in the initial correction stage, the bulge structure is bitten and is bitten by excessive biting force, so that the appliance cannot be used continuously, the appliance needs to be restarted, the correction period is overlong, and the correction feeling of a patient is poor.

Disclosure of utility model

The application aims to provide a tooth correction system which effectively solves the problems, and the occlusion force in the subsequent correction process is reduced by designing a muscle reconstruction stage, so that the correction result is more accurate and stable.

In order to achieve the above object, an embodiment of the present application provides a dental appliance system, including a plurality of first shell appliances corresponding to a first appliance stage and a plurality of second shell appliances corresponding to a second appliance stage, the first shell appliances including a first shell body having a plurality of dental receiving cavities and a first adjusting portion provided on a surface of the first shell body and protruding toward a jaw direction to adjust a vertical occlusion relationship of upper and lower jaws, the plurality of first shell appliances in the first appliance stage corresponding to a dental state of one appliance step, and the plurality of first shell appliances having a uniform shape; the second shell-shaped appliance comprises a second shell-shaped body with a plurality of tooth accommodating cavities and a second adjusting part which is arranged on the surface of the second shell-shaped body and protrudes towards the opposite jaw direction to adjust the occlusion relation, the second shell-shaped appliances in the second correcting stage respectively correspond to tooth correcting states of a plurality of correcting steps, and along with the advancement of the correcting process, the second shell-shaped appliances have different geometric shapes and adjust the dentition and/or the jaw relation of a patient from an initial position to a target position; wherein the rigidity of the first adjusting part in any one of the first correction stages in the occlusion direction is larger than the rigidity of the second adjusting part in any one of the second correction stages in the occlusion direction.

Preferably, the first adjustment portion is integrally formed with the first shell-like body; the second adjusting part and the second shell-shaped body are integrally formed.

Preferably, the thickness of the diaphragm of the first adjusting part is larger than that of the diaphragm of the second adjusting part, and the difference between the thickness of the diaphragm of the first adjusting part and that of the diaphragm of the second adjusting part is between 0.2mm and 1.0 mm.

Preferably, the thickness of the membrane of the first adjusting part is more than or equal to 1.0mm and less than or equal to 2.0mm; the thickness of the membrane of the second adjusting part is more than or equal to 0.4mm and less than 1.0mm.

Preferably, the first adjustment part surface is provided with a reinforcing ridge for reinforcing the deformation resistance of the first adjustment part along the occlusal direction; the surface curvature of the reinforcing ridge is greater than the surface curvature of the surface on which it is located.

Preferably, the first adjusting part and the first shell-shaped body are of a split structure; the second adjusting part and the second shell-shaped body are of a split structure.

Preferably, the first adjusting part and the first shell-shaped body are of a split structure; the second adjusting part and the second shell-shaped body are integrally formed.

Preferably, the material elastic modulus of the first adjustment portion is larger than the material elastic modulus of the second adjustment portion.

Preferably, the first adjustment portion is made of a material identical to the first shell-like body; the second adjustment portion is of a material consistent with the second shell-like body.

Preferably, the first adjusting part is at least partially of a solid structure; the second adjusting part is of a hollow structure.

Preferably, the plurality of first adjustment portions have a uniform height of projections in the opposite jaw direction.

Preferably, the protrusion height of the plurality of first adjustment portions is such that the incisors of the anterior teeth of the upper and lower jaws are aligned when worn and in the bite state.

Preferably, the plurality of second shell-like bodies are provided with second adjustment portions at the same positions as the first adjustment portions on the first shell-like bodies, the first adjustment portions are provided in the posterior tooth regions of the first shell-like bodies, and the second adjustment portions are provided in the posterior tooth regions of the second shell-like bodies.

Preferably, the height of the protrusions of the plurality of second adjusting parts gradually decreases with the progress of the correction.

Preferably, the difference of the protrusion heights of the second adjusting parts between the adjacent correction steps is between 0.5mm and 1.0 mm.

Preferably, the first shell appliance further comprises a retention attachment adhered to the tooth surface of the posterior region.

Preferably, the second shell appliance further comprises an appliance attachment bonded to the tooth surface for tooth movement in cooperation with the second shell body.

Preferably, the first shell-like body includes a first maxillary shell-like body accommodating maxillary dentition and a first mandibular shell-like body accommodating mandibular dentition, the first adjusting portion is provided on a posterior occlusion surface of the first maxillary shell-like body, and an occlusion surface of the first adjusting portion has a structure that is concave-convex matched with a dental occlusion surface at a position corresponding to the opposite jaw.

Preferably, the second shell-like body includes a second maxillary shell-like body accommodating maxillary dentition and a second mandibular shell-like body accommodating mandibular dentition, the second adjusting portion is provided on a posterior occlusion surface of the second maxillary shell-like body, and an occlusion surface of the first adjusting portion has a structure that is concave-convex matched with a dental occlusion surface at a position corresponding to the opposite jaw.

Preferably, the first shell body comprises a first maxillary shell body for accommodating maxillary dentition and a first mandibular shell body for accommodating mandibular dentition, wherein a first upper adjusting part is arranged in a way of protruding towards the opposite jaw direction from the area from the buccal side to the lingual side in the posterior dental area of the first maxillary shell body, a first lower adjusting part is arranged in a way of protruding towards the opposite jaw direction from the area from the buccal side to the lingual side in the posterior dental area of the first mandibular shell body, and when the mandibular shell body is worn, the first upper adjusting part interacts with the first lower adjusting part so as to guide the mandible to move in the sagittal direction, and the distance of the sagittal direction is a first distance; wherein the first distances that direct sagittal movement of the mandible when the plurality of first shell appliances are worn are equal.

Preferably, the second shell-shaped body comprises a second maxillary shell-shaped body accommodating maxillary dentition and a second mandibular shell-shaped body accommodating mandibular dentition, a rear tooth area of the second maxillary shell-shaped body is provided with a second upward adjustment part protruding towards the opposite jaw direction from the area from the buccal side to the lingual side, a rear tooth area of the second mandibular shell-shaped body is provided with a second downward adjustment part protruding towards the opposite jaw direction from the area from the buccal side to the lingual side, and when the lower jaw-shaped body is worn, the second upward adjustment part interacts with the second downward adjustment part so as to guide the mandible to perform sagittal movement, and the distance of the sagittal movement is a second distance; wherein the second distances that direct sagittal movement of the mandible when the plurality of second shell appliances are worn are equal or progressively larger.

Preferably, the first shell-shaped body comprises a first maxillary shell-shaped body for accommodating maxillary dentition, the first adjusting part is a first flat guiding structure arranged on the lingual side surface of the anterior teeth area of the first maxillary shell-shaped body and used for opening anterior teeth occlusion, and the first flat guiding structure comprises a first supporting part mutually supporting to the opposite teeth; the second shell-shaped body comprises a second upper jaw shell-shaped body for accommodating upper jaw dentition, the second adjusting part is a second flat guide structure which is arranged on the lingual side surface of the anterior teeth area of the second upper jaw shell-shaped body and used for opening anterior teeth occlusion, and the second flat guide structure comprises a second propping part propped against the opposite jaw teeth mutually.

Preferably, the first abutting portion and/or the second abutting portion are connected with lingual sides of the plurality of tooth receiving cavities and are continuously arranged.

Preferably, the first supporting portion and/or the second supporting portion are respectively connected with lingual sides of the plurality of tooth receiving cavities and are discretely arranged.

Preferably, the first abutting portion and/or the second abutting portion is/are 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 first abutment and/or the second abutment are/is inclined surfaces for guiding the mandible to move forward.

Preferably, the method further comprises a plurality of third shell-shaped appliances corresponding to a third correction stage, wherein the third shell-shaped appliances have the same geometric shape, and the geometric shape of the third shell-shaped appliances is consistent with the geometric shape of the second shell-shaped appliances in the last correction step of the second correction stage.

Preferably, the orthodontic appliance further comprises a plurality of fourth shell-shaped appliances corresponding to the fourth correcting stage, wherein each fourth shell-shaped appliance comprises a fourth shell-shaped body with a plurality of tooth accommodating cavities and a fourth adjusting part which is arranged on the surface of the fourth shell-shaped body and protrudes towards the jaw direction to adjust the vertical occlusion relation of the upper jaw and the lower jaw, and the protruding heights of the fourth adjusting parts gradually decrease along with the advancement of the correcting process until occlusion contact is generated between teeth in the front tooth area.

Compared with the prior art, the tooth correction system provided by the utility model has at least the following beneficial effects:

The tooth correcting system is designed into a first correcting stage and a subsequent second correcting stage, wherein the first correcting stage is a muscle adapting stage, a first adjusting part in the first correcting stage is used for adjusting the upper and lower jaw occlusion relation to a target position, and the tooth moving amount is not designed in the first correcting stage, so that the design has the advantages that the muscle of a patient is adapted to a new jaw position through the structure of the first adjusting part, the first adjusting part can be adjusted in time when a problem occurs, and the problem which is caused by the tooth moving can be eliminated; the muscle reconstruction is completed in the first correction stage, the biting force in the subsequent correction process is reduced, and the tooth correction and jaw correction in the second correction stage can achieve better correction effect.

In addition, the tooth correction system also has a third correction stage with a holding function and a fourth correction stage for gradually reducing jaw to complete occlusion contact, and correction is synchronously completed, so that muscle reconstruction can be effectively completed in the whole correction process, correction expression rate can be improved, correction effect is improved, and correction restarting rate is reduced.

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 diagram of a dental appliance system according to some embodiments of the present application;

FIG. 2 is a schematic diagram of a dental appliance system according to other embodiments of the present application;

FIG. 3 is a schematic diagram of a dental appliance system according to other embodiments of the present application;

FIG. 4 is a schematic diagram of a dental appliance system according to further embodiments of the present application;

FIG. 5 is a schematic diagram of a dental appliance system according to further embodiments of the present application;

FIG. 6 is a schematic diagram of a dental appliance system according to further embodiments of the present application;

FIG. 7 is a schematic diagram of a dental appliance system according to further embodiments of the present application;

FIG. 8 is a schematic diagram of the structure of a first shell appliance in some embodiments of the present application;

FIG. 9 is a schematic diagram of a dental appliance system according to further embodiments of the present application;

FIG. 10 is a schematic diagram of a dental appliance system according to further embodiments of the present application;

FIG. 11 is a schematic illustration of the structure of a first shell appliance in some embodiments of the present application;

FIG. 12 is a schematic illustration of the construction of a second shell appliance in some embodiments of the present application;

FIG. 13 is a schematic view of a dental appliance system according to further embodiments of the present application;

fig. 14 is a schematic view of a dental appliance system according to further embodiments of the present application.

Detailed Description

For the purpose 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. The claimed application may be practiced without these specific 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 can be mutually combined and referred to without contradiction.

The "posterior tooth region" referred to in the various embodiments of the present application is defined according to classification of teeth including premolars and molar, shown as 4-8 teeth in FDI notation, and anterior tooth region FDI notation as 1-3 teeth in pages 36-38 of the "oral medicine guide" 2 nd edition published by the medical press of beijing university. 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.

The applicant found that when the hidden correction technology is used for treating the abnormal jaw cases, the protruding structure for adjusting the relationship between the jaws is a hollow structure integrally formed with the shell-shaped body, and in the initial wearing stage, large biting force is formed between the upper jaw and the lower jaw due to the fact that oral muscles are pulled, and the protruding structure is bitten and deformed, so that the orthopedic treatment cannot be well realized.

In view of the problems in the prior art, referring to fig. 1 to 14, an embodiment of the present application provides a dental appliance system, which includes a plurality of first shell-shaped appliances 100 corresponding to a first appliance stage S1 and a plurality of second shell-shaped appliances 200 corresponding to a second appliance stage S2, where the first shell-shaped appliances 100 include a first shell-shaped body 1 having a plurality of tooth-receiving cavities and a first adjusting portion 111 provided on a surface of the first shell-shaped body 1 and protruding toward a jaw direction to adjust a vertical upper and lower jaw occlusion relationship, and the plurality of first shell-shaped appliances 100 in the first appliance stage S1 correspond to a dental appliance state of one step, and it is required to be explained that the dentition arrangement and the jaw relationship in the same step are identical, so that the shapes of the plurality of first shell-shaped appliances 100 are identical. The second shell-shaped appliance 200 includes a second shell-shaped body 2 having a plurality of tooth accommodating cavities, and a second adjusting portion 221 protruding toward the jaw direction and provided on a surface of the second shell-shaped body 2 for adjusting the occlusion relationship, wherein the plurality of second shell-shaped appliances 200 in the second correcting stage S2 respectively correspond to the tooth correcting states of the plurality of correcting steps, and it is to be noted that the dentition arrangement and/or the inter-jaw relationship in the plurality of correcting steps are different, and as the correcting process advances, the plurality of second shell-shaped appliances 200 have different geometric shapes and adjust the dentition and/or the inter-jaw relationship of the patient from the initial position to the target position; wherein the rigidity of the first adjustment part 111 in the occlusal direction in any one of the first correction stages S1 is greater than the rigidity of the second adjustment part 221 in the occlusal direction in any one of the second correction stages S2. The first shell appliance 100 and the second shell appliance 200 have the same mating dentition and may be worn on either the maxillary dentition or mandibular dentition. The first correcting stage S1 in each embodiment of the application is a muscle adapting stage, tooth movement is not designed, the muscle adapting stage can enable a patient to adapt to a new jaw position in the correcting process, and can enable muscles to establish new stress balance at the new position, so that the biting force in the subsequent correcting process is reduced, and the problem that the first adjusting part 111 deforms due to overlarge biting force in the subsequent correcting process is avoided. In addition, the problem that the patient can adapt to the jaw position can be timely adjusted by not designing tooth movement in the first correction stage S1, if the patient suffers from the problem in the wearing process, the problem caused by the tooth movement can be eliminated, and therefore, the problem of repeated clinical operation or continuous design scheme modification can be reduced by only adjusting the adjusting part. The second correction stage S2 is an orthopedic correction stage, is a subsequent stage of the first correction stage S1, and can synchronously complete the alignment of dentition and the adjustment of jaw positions in the second correction stage S2, so that the correction process is shortened. The correction system in each embodiment of the application is designed with the first correction stage S1 and the second correction stage S2, so that correction accuracy can be ensured, correction deviation caused by deformation of the adjusting part in the correction process can be avoided, and correction efficiency and correction accuracy can be improved.

In some embodiments, the first shell appliance 100 and the second shell appliance 200 may be used to treat the problem of sagittal malocclusion (including inverse jaw, deep coverage, etc.), wherein the first shell body 1 comprises a first maxillary shell body 11 that accommodates maxillary dentition and a first mandibular shell body 12 that accommodates mandibular dentition, the posterior region of the first maxillary shell body 11 is provided with a first upper adjustment portion 111a protruding toward the opposite jaw from the buccal side to the lingual side, the posterior region of the first mandibular shell body 12 is provided with a first lower adjustment portion 111b protruding toward the opposite jaw from the buccal side to the lingual side, and the first upper adjustment portion 111a interacts with the first lower adjustment portion 111b to guide the mandibular movement when worn, the distance of the sagittal movement being a first distance; wherein the first distances guiding the sagittal movement of the lower jaw when the plurality of first shell-like appliances 100 are worn are equal, and the protrusion heights of the plurality of first adjustment portions 111 satisfy alignment of the incisors of the anterior teeth of the upper and lower jaws when worn and in an occlusal state. The second shell-shaped body 2 includes a second upper shell-shaped body 21 accommodating the upper dentition and a second lower shell-shaped body 22 accommodating the lower dentition, a second upper adjusting portion 221a is provided so as to protrude in the opposite jaw direction from the region from the buccal surface to the lingual surface in the posterior dental region of the second upper shell-shaped body 21, a second lower adjusting portion 221b is provided so as to protrude in the opposite jaw direction from the region from the buccal surface to the lingual surface in the posterior dental region of the second lower shell-shaped body 22, and when the lower shell-shaped body is worn, the second upper adjusting portion 221a interacts with the second lower adjusting portion 221b to guide the sagittal movement of the lower jaw, and the distance of the sagittal movement is a second distance; wherein the second distances that direct the sagittal movement of the mandible when the plurality of second shell appliances 200 are worn are equal or progressively larger. The correction system in the embodiment drives the mandible to move forwards or backwards, so as to achieve the effect of mandible stretching forwards or mandible shrinking backwards, and the relationship between the upper jaw and the lower jaw is adjusted to be normal.

Specifically, referring to fig. 1 to 4, the first upper adjustment part 111a and the first lower adjustment part 111b may be located in the buccal side and occlusal area or the lingual side and occlusal area of the posterior tooth area of the shell-shaped body, and the first upper adjustment part 111a is identical to the area corresponding to the first lower adjustment part 111b, ensuring that the surface of the first upper adjustment part 111a adjacent to the first lower adjustment part 111b may interact with the surface of the first lower adjustment part 111b adjacent to the first upper adjustment part 111a during occlusion, thereby completing sagittal movement of the mandible. The mandibular sagittal anterior movement or sagittal posterior movement may be designed according to the correction scheme. The first upper adjusting portion 111a and the first lower adjusting portion 111b are provided on the first upper shell-like body 11 and the first lower shell-like body 21, respectively, corresponding to the posterior teeth, and the lengths of the first upper adjusting portion 111a and the first lower adjusting portion 111b in the mesial-distal direction of the dentition cover at least the length in the mesial-distal direction of one of the posterior teeth. Also, the second upper adjustment part 221a and the second lower adjustment part 221b may be located in the buccal and occlusal areas or the lingual and occlusal areas of the posterior tooth area of the shell-shaped body, and the second upper adjustment part 221a is identical to the area corresponding to the second lower adjustment part 221b, ensuring that the surface of the second upper adjustment part 221a adjacent to the second lower adjustment part 221b may interact with the surface of the second lower adjustment part 221b adjacent to the second upper adjustment part 221a during occlusion, thereby completing sagittal movement of the mandible. The occlusal surfaces of the first upper adjusting portion 111a and the first lower adjusting portion 111b have a structure that is matched with the concave-convex surface of the teeth at the corresponding position of the jaw, that is, the occlusion of the first adjusting portion 111 has a guiding and positioning function, and the sagittal movement of the lower jaw can be guided by the concave-convex matching relationship. Similarly, the occlusal surfaces of the second upper adjusting portion 221a and the second lower adjusting portion 221b have a structure that is matched with the concave-convex surface of the tooth at the position corresponding to the jaw, that is, the occlusion of the second adjusting portion 221 has a guiding and positioning function, and the sagittal movement of the lower jaw can be guided by the concave-convex matching relationship. The sagittal movement corresponding to the first correction stage S1 and the second correction stage S2 is the same, and the mandibular sagittal movement forward or sagittal movement backward can be designed according to the correction scheme. the vertically opened bite height of the first upper and lower adjustment portions 111a and 111b is the same as the vertically opened bite height of the second upper and lower adjustment portions 221a and 221b in the first correction step in the second correction stage S2. Wherein the vertical open bite height is related to the height of the projections of the first and second adjustment portions 111 and 221 in the jaw alignment direction, the projection heights of the plurality of first adjustment portions 111 are uniform, and the projection heights satisfy alignment of the incisors of the anterior teeth region of the upper and lower jaws when worn and in the bite state. In the present embodiment, the projection heights of the first upper adjustment portion 111a and the first lower adjustment portion 111b are kept substantially uniform. In addition, the protrusion heights of the plurality of second adjusting portions 221 in the second correcting stage S2 gradually decrease along with the progress of correction, that is, the protrusion heights of the second upper adjusting portion 221a and the second lower adjusting portion 221b in the same correcting step are identical, in different correcting steps, as shown in fig. 2 and 4, the protrusion heights in the subsequent correcting steps are smaller than the protrusion heights of the previous correcting steps, and the difference between the protrusion heights of the second adjusting portions 221 between the adjacent correcting steps is between 0.5mm and 1.0 mm.

In other embodiments, referring to FIG. 5, the first shell appliance 100 and the second shell appliance 200 may be used to treat vertical and partial sagittal malocclusions (e.g., inverse jaw), the first shell body 1 includes at least a first maxillary shell body 11 that accommodates maxillary dentition, and may also include a first mandibular shell body 12 that accommodates mandibular dentition, the first adjustment portion 111 is disposed on the occlusal surface of the posterior dental region of the first maxillary shell body 11, and the occlusal surface of the first adjustment portion 111 has a configuration that matches the concave-convex occlusal surface of the teeth at the corresponding position to the jaw. The first mandibular shell-shaped body 12 is not provided with an adjusting part for accommodating a plurality of teeth of the mandibular dentition, and the occlusal surface of the first adjusting part 111 is matched with the occlusal surface of the teeth of the opposite jaw at the target position corresponding to the correcting step in a concave-convex matching manner, that is, the occlusion of the first adjusting part 111 has the function of guiding and positioning, and the mandibular sagittal movement can be guided through the concave-convex matching relationship. Similarly, the second shell-like body 2 may include at least a second maxillary shell-like body 21 accommodating the maxillary dentition, or may include a second mandibular shell-like body 22 accommodating the mandibular dentition, and the second adjusting portion 221 may be provided on the occlusal surface of the posterior dental region of the second maxillary shell-like body 21, and the occlusal surface of the second adjusting portion 221 may have a structure that is matched with the concave-convex surface of the occlusal surface of the tooth at the position corresponding to the counter jaw. The second mandibular shell-shaped body 22 is not provided with an adjusting part for accommodating a plurality of teeth of the mandibular dentition, and the occlusal surface of the second adjusting part 221 is matched with the occlusal surface of the teeth of the jaw at the target position corresponding to the correcting step in a concave-convex matching way, that is, the occlusion of the second adjusting part 221 has the function of guiding and positioning, and the mandibular sagittal movement can be guided through the concave-convex matching relation. In this embodiment, the heights of the first adjusting parts 111 in the first correction stage S1 are unchanged, and the protruding heights of the first adjusting parts 111 meet the alignment of the incisors of the anterior teeth of the upper and lower jaws in the occlusal state when the wearer wears the appliance. The protrusion heights of the plurality of second adjustment portions 221 in the second correction stage S2 gradually decrease along with the progress of correction, that is, in different correction steps, the protrusion height in the subsequent correction step is smaller than the protrusion height of the previous correction step, the difference value of the protrusion heights of the second adjustment portions 221 between the adjacent correction steps is between 0.5mm and 1.0mm, and the protrusion height of the second adjustment portions 221 in the first correction step in the second correction stage S2 is consistent with the protrusion height of the plurality of first adjustment portions 111 in the first correction stage S1.

In the above embodiment, the occlusal surface of the first adjusting portion has a structure that is matched with the concave-convex surface of the tooth at the position corresponding to the opposing jaw, and the concave-convex matching may be occlusion matching, that is, the occlusal surface of the first adjusting portion is fitted to the occlusal surface of the opposing jaw at the target position in the corresponding step. Or the concave-convex matching means that the occlusal surface of the first adjusting part is matched with the structure of the occlusal surface of the second shell-shaped body at the target position in the corresponding step, and the friction matching is included. The concave-convex matched structural design can keep the mandible stable at the target position, so that the correction result is more accurate.

In other embodiments, as shown with reference to fig. 6 and 7, the first shell appliance 100 and the second shell appliance 200 can be used to treat problems with deep anterior jaw coverage. The first shell-shaped body 1 comprises a first upper jaw shell-shaped body 11 for accommodating upper jaw dentition, the first adjusting part 111 is a flat guide structure which is arranged on the lingual side surface of the anterior teeth area of the first upper jaw shell-shaped body 11 and used for opening anterior teeth occlusion, the flat guide structure can adjust the vertical occlusion relation of upper and lower jaw teeth to open posterior teeth occlusion, and the flat guide structure comprises a propping part propping against the opposite jaw teeth mutually. Referring specifically to fig. 6, the first abutment 112 is connected to lingual sides of the plurality of tooth receiving cavities and is continuously disposed, and the first flat guide structure is integrally disposed on the lingual side of the tooth receiving cavities, and the first abutment 112 includes a continuous surface contacting teeth of the anterior teeth area of the opposite jaw. Or, referring specifically to fig. 8, the first abutment portions 112 are respectively connected to lingual sides of the plurality of tooth receiving cavities and are disposed in a discrete manner. The first flat guide structure is a plurality of structures on the lingual side of the tooth receiving cavity, and the first abutment 112 includes a discrete surface in tooth contact with the anterior mandibular region. Similarly, the second shell-shaped body 2 includes a second maxillary shell-shaped body 21 for accommodating the maxillary dentition, and the second adjusting portion 221 is a flat guiding structure provided on the lingual side of the anterior teeth area of the second upper shell-shaped body for opening the occlusion of the anterior teeth, and the flat guiding structure can adjust the vertical occlusion relationship of the maxillary teeth and the mandibular teeth to open the occlusion of the posterior teeth, and includes an abutting portion for abutting against the opposite teeth. The second abutting part 222 is connected with the lingual sides of the plurality of tooth accommodating cavities and is arranged continuously, the second flat guide structure is arranged on the lingual sides of the tooth accommodating cavities in an integral structure, and the second abutting part 222 comprises a continuous surface contacted with teeth in the opposite jaw anterior teeth area. Or the second abutting parts 222 are respectively connected with the lingual sides of the plurality of tooth receiving cavities and are discretely arranged. The second flat guide structure is a plurality of structures on the lingual side of the tooth receiving cavity and the second abutment 222 includes a discrete surface in contact with the teeth of the anterior mandibular region. In this embodiment, the heights of the first adjusting portions 111 in the first correction stage S1 are unchanged, and the heights of the protrusions of the second adjusting portions 221 in the second correction stage S2 are gradually reduced along with the progress of correction, i.e., in different correction steps, the heights of the protrusions in the subsequent correction steps are smaller than those of the previous correction step. And, the protrusion height of the second adjusting part 221 in the first correction step in the second correction stage S2 is identical to the protrusion height of the plurality of first adjusting parts 111 in the first correction stage S1. In addition, the first abutment 112 and/or the second abutment 222 are planes parallel to the occlusal plane, and may have bite structures thereon for positioning the mandibular position, the bite structures having the same shape as the teeth of the mandibular anterior dental region. Specifically, the occlusion structure is consistent with the shape of the incisors of the anterior teeth area of the jaw at the target position in the corresponding correction step, and the sagittal movement of the lower jaw is regulated by the bite structure. Or the first abutment 112 and/or the second abutment 222 are inclined surfaces that guide the mandible to move forward.

In some embodiments, referring specifically to fig. 9, the dental appliance system further comprises a plurality of third shell appliances 300 corresponding to a third stage S3, wherein the plurality of third shell appliances 300 have the same geometry, the third stage S3 is a holding stage, no tooth movement or jaw adjustment is designed, and the geometry of the plurality of third shell bodies 3 is identical to the geometry of the second shell appliances 200 in the last stage of the second stage S2. After the second orthodontic stage S2 is completed, the periodontal ligament and the oral muscle of the teeth are balanced at the new position to prevent the teeth or jaw position from moving to the original position after the orthodontic. Therefore, the third correction stage S3 can better maintain the correction effect. The third shell body 3 in the third correction stage S3 may include a third maxillary shell body 31 and a third mandibular shell body 32.

In some embodiments, referring specifically to fig. 10, after the first correction stage S1, the second correction stage S2, and the third correction stage S3, the dental correction system further includes a plurality of fourth shell-shaped correction devices 400 corresponding to the fourth correction stage S4, where the fourth shell-shaped correction devices 400 include a fourth shell-shaped body having a plurality of tooth-receiving cavities, and a fourth adjusting portion provided on a surface of the fourth shell-shaped body and protruding toward the jaw direction to adjust a vertical occlusion relationship between the upper jaw and the lower jaw, and the protruding heights of the plurality of fourth adjusting portions gradually decrease as the correction progresses until the teeth in the anterior dental region make occlusion contact. The fourth correction stage S4 is a mandibular stage, and the upper and lower jaws with the teeth arranged and jaw position adjusted are gradually adjusted to a normal occlusion state, so that the whole correction scheme is completed. The fourth shell body 4 in the fourth correction stage S4 may include a fourth maxillary shell body 41 and a fourth mandibular shell body 42.

In some embodiments, referring specifically to fig. 1, the first adjustment portion 111 is integrally formed with the first shell-like body 1; the second adjusting portion 221 is integrally formed with the second shell-like body 2. The first adjusting part 111 and the first shell-shaped body 1 are made of the same material, the second adjusting part 221 and the second shell-shaped body 2 are made of one of materials PETG, PC and TPU, and can be made of other polymer materials which can be used in the oral cavity and have medical instrument use safety, so that the effect of correcting teeth can be generated while the oral cavity is worn safely, the first adjusting part 111 and the first shell-shaped body 1 are manufactured through a hot-pressing film process, the thickness of the film of the first adjusting part 111 and the thickness of the film of the first shell-shaped body 1 are consistent, the first adjusting part 111 and the second shell-shaped body 2 are manufactured through a hot-pressing film process, and the thickness of the film of the second adjusting part 221 and the film of the second shell-shaped body 2 are consistent. The diaphragm thickness of the first adjusting part 111 is greater than that of the second adjusting part 221, and the difference between the diaphragm thickness of the first adjusting part 111 and that of the second adjusting part 221 is between 0.2mm and 1.0mm. Further, the thickness of the membrane of the first adjustment portion 111 is 1.0mm or more and 2.0mm or less; the thickness of the membrane of the second adjusting part 221 is greater than or equal to 0.4mm and less than 1.0mm. For example, the first adjustment part 111 and the first shell-shaped body 1 are made of a multi-layer composite material, which may be a multi-layer composite material formed by any combination of PETG, PC or TPU, or the first shell-shaped body 1 is of a single-layer structure, and the first adjustment part 111 is made of a multi-layer composite material, wherein one layer of the multi-layer structure of the first adjustment part 111 may be the same as the first shell-shaped body 1 or different from the first shell-shaped body 1, such as the adjustment part is made of a double-layer composite material, specifically, PETG and TPU, and the material of the first shell-shaped body 1 is PETG or TPU. The second adjusting portion 221 and the second shell-shaped body 2 are made of a multi-layer composite material, and may be a multi-layer composite material formed by any combination of PETG, PC or TPU, or the second shell-shaped body 2 is of a single-layer structure, and the second adjusting portion 221 is made of a multi-layer composite material, wherein one layer of the multi-layer structure of the second adjusting portion 221 may be the same as or different from the second shell-shaped body 2, such as the second adjusting portion 221 is made of a double-layer composite material, specifically PETG and TPU, and the material of the second shell-shaped body 2 is PETG or TPU.

In other embodiments, referring specifically to fig. 11 and 12, the first adjustment portion 111 is integrally formed with the first shell-like body 1; the second adjusting portion 221 is integrally formed with the second shell-like body 2. The first and second shell bodies 1 and 2 have the same thickness, that is, the thickness of the diaphragm of the first adjustment portion 111 is the same as that of the diaphragm of the second adjustment portion 221. The surface of the first adjusting part 111 is provided with a reinforcing ridge for reinforcing the deformation resistance of the first adjusting part 111 along the occlusal direction; the surface curvature of the reinforcing ridge is greater than the surface curvature of the surface on which it is located. The second adjusting portion 221 is not provided with reinforcing ridges or is provided with a smaller number of reinforcing ridges than the first adjusting portion 111.

In other embodiments, referring specifically to fig. 13, the first adjusting portion 111 and the first shell-shaped body 1 are in a split structure; the second adjusting portion 221 and the second shell-shaped body 2 are in a split structure. The first adjustment portion 111 may be fixed to the surface of the first shell-like body 1 by bonding, welding, or the like, and similarly, the second adjustment portion 221 may be fixed to the surface of the second shell-like body 2 by bonding, welding, or the like. The elastic modulus of the material of the first adjustment part 111 is greater than that of the material of the second adjustment part 221, or at least part of the first adjustment part 111 is of a solid structure; the second adjusting part 221 has a hollow structure. Specifically, the first adjustment portion 111 further includes a cavity structure and a filler therein. The filling piece can be made of glass resin materials meeting the oral medical standard, when the dental appliance is in an initial correction stage, namely, the mandibular teeth of a patient in the first correction stage S1 can have larger biting force on the adjusting part, the cavity structure of the adjusting part is easy to collapse and deform in the use process, so that the dental appliance can not be worn any more due to the fact that the correction function is lost.

In other embodiments, referring specifically to fig. 14, the first adjusting portion 111 and the first shell-shaped body 1 are in a split structure; the second adjusting portion 221 is integrally formed with the second shell-like body 2. The first adjustment portion 111 may be fixed to the surface of the first shell-like body 1 by bonding, welding, or the like, and the first adjustment portion 111 may be of a solid structure. Because the rigidity of the integrally formed first shell-shaped appliance 100 manufactured by the hot-pressing film process does not meet the requirement of the first correction stage S1, the first adjusting portion 111 and the first shell-shaped body 1 in the first correction stage S1 are provided in a split structure.

In other embodiments, when the first shell-like body is integrally formed with the first adjustment portion, and particularly when the first adjustment portion is of a cavity structure, the retention force of the first shell-like body with the teeth is reduced, and thus the first shell-like appliance further includes a retention attachment adhered to the tooth surface of the posterior tooth region for enhancing the wearing force of the first shell-like body, the retention attachment may be a rectangular attachment or an oval attachment. Specifically, when the first adjusting portion is disposed in the posterior dental region (refer to the embodiment in fig. 1-5), in order to complete sagittal movement of the mandible, the cavity structure of the first adjusting portion may cover 2-3 dental positions, which may also make the tooth accommodating cavity in which the first adjusting portion is disposed and the adjacent tooth accommodating cavity have relatively poor wrapping about the teeth, and the positioning effect of the first adjusting portion may be enhanced by designing the retention accessory on the tooth surface of the posterior dental region; when the first adjusting part is arranged in the front teeth area (refer to the embodiment in fig. 6-7), the first adjusting part receives an upward force when in occlusion, and the generated torque can enable the first shell-shaped body to be separated from teeth in the rear teeth area, so that the first shell-shaped body can be positioned only when the retention accessory is arranged in the rear teeth area, and a better correction effect is obtained. In addition, the second shell-shaped appliance further comprises an appliance accessory which is adhered to the surface of the teeth and is matched with the second shell-shaped body to carry out tooth movement, the appliance accessory is provided with an action surface matched with the second shell-shaped body, and acting force and/or moment meeting the appliance requirement can be generated, so that tooth movement is accelerated, and the appliance progress is shortened.

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 (29)

1. A tooth correction system is characterized by comprising a plurality of first shell-shaped correction devices corresponding to a first correction stage and a plurality of second shell-shaped correction devices corresponding to a second correction stage, wherein the first shell-shaped correction devices comprise a first shell-shaped body with a plurality of tooth accommodating cavities and a first adjusting part which is arranged on the surface of the first shell-shaped body and protrudes towards the jaw direction to adjust the vertical occlusion relation of the upper jaw and the lower jaw, the plurality of first shell-shaped correction devices in the first correction stage correspond to the tooth state of one correction step, and the shapes of the plurality of first shell-shaped correction devices are consistent; the second shell-shaped appliance comprises a second shell-shaped body with a plurality of tooth accommodating cavities and a second adjusting part which is arranged on the surface of the second shell-shaped body and protrudes towards the opposite jaw direction to adjust the occlusion relation, the second shell-shaped appliances in the second correcting stage respectively correspond to tooth correcting states of a plurality of correcting steps, and along with the advancement of the correcting process, the second shell-shaped appliances have different geometric shapes and adjust the dentition and/or the jaw relation of a patient from an initial position to a target position; wherein the rigidity of the first adjusting part in any one of the first correction stages in the occlusion direction is larger than the rigidity of the second adjusting part in any one of the second correction stages in the occlusion direction.

2. The dental appliance system of claim 1, wherein the first adjustment portion is integrally formed with the first shell-like body; the second adjusting part and the second shell-shaped body are integrally formed.

3. The dental appliance system of claim 2, wherein the diaphragm thickness of the first adjustment portion is greater than the diaphragm thickness of the second adjustment portion, the diaphragm thickness of the first adjustment portion and the diaphragm thickness of the second adjustment portion having a difference between 0.2mm and 1.0 mm.

4. The dental appliance system of claim 3, wherein the first adjustment portion has a film thickness of 1.0mm or greater and 2.0mm or less; the thickness of the membrane of the second adjusting part is more than or equal to 0.4mm and less than 1.0mm.

5. The dental appliance system of claim 2, wherein the first adjustment portion surface is provided with a stiffening ridge in the bite direction that enhances the first adjustment portion's resistance to deformation; the surface curvature of the reinforcing ridge is greater than the surface curvature of the surface on which it is located.

6. The dental appliance system of claim 1, wherein the first adjustment portion and the first shell-like body are of a split construction; the second adjusting part and the second shell-shaped body are of a split structure.

7. The dental appliance system of claim 1, wherein the first adjustment portion and the first shell-like body are of a split construction; the second adjusting part and the second shell-shaped body are integrally formed.

8. The dental appliance system of claim 2 or 6 or 7, wherein the first adjustment portion has a material modulus of elasticity that is greater than a material modulus of elasticity of the second adjustment portion.

9. The dental appliance system of claim 8, wherein the first adjustment portion is of a same material as the first shell-like body; the second adjustment portion is of a material consistent with the second shell-like body.

10. The dental appliance system of claim 2 or 6 or 7, wherein the first adjustment portion is at least partially of solid construction; the second adjusting part is of a hollow structure.

11. The dental appliance system of claim 1, wherein the plurality of first adjustment portions have a uniform height of projections in the opposite jaw direction.

12. The dental appliance system of claim 11, wherein the plurality of first adjustment portions have a projection height sufficient to align the incisors of the anterior maxillary and mandibular teeth when worn and in occlusion.

13. The dental appliance system of claim 11, wherein a plurality of the second shell-like bodies are provided with second adjustment portions at the same locations as the first adjustment portions on the first shell-like bodies, and wherein the first adjustment portions are disposed in the posterior region of the first shell-like bodies and the second adjustment portions are disposed in the posterior region of the second shell-like bodies.

14. The dental appliance system of claim 13, wherein the height of the projections of the plurality of second adjustment portions decreases progressively as the appliance progresses.

15. The dental appliance system of claim 14, wherein the difference in the height of the second adjustment tab between adjacent appliance steps is between 0.5mm and 1.0mm.

16. The dental appliance system of claim 1, wherein the first shell appliance further comprises a retention attachment bonded to a tooth surface of the posterior region.

17. The dental appliance system of claim 16, wherein the second shell appliance further comprises an appliance attachment bonded to a tooth surface for tooth movement in cooperation with the second shell body.

18. The dental appliance system of claim 1, wherein the first shell body comprises a first maxillary shell body accommodating maxillary dentition and a first mandibular shell body accommodating mandibular dentition, the posterior region of the first maxillary shell body projecting in the opposite jaw direction from the buccal side to the lingual side area and the posterior region of the first mandibular shell body projecting in the opposite jaw direction from the buccal side to the lingual side area and having a first lower adjustment that interacts with the first lower adjustment to guide sagittal movement of the mandible when worn, the sagittal movement being a first distance; wherein the first distances that direct sagittal movement of the mandible when the plurality of first shell appliances are worn are equal.

19. The dental appliance system of claim 18, wherein the second shell body comprises a second maxillary shell body accommodating the maxillary dentition and a second mandibular shell body accommodating the mandibular dentition, the posterior region of the second maxillary shell body projecting in the opposite jaw direction from the buccal side to the lingual side region and the posterior region of the second mandibular shell body projecting in the opposite jaw direction from the buccal side to the lingual side region and having a second adjustment downward, the second adjustment upward interacting with the second adjustment downward to guide sagittal movement of the mandible a second distance when worn; wherein the second distances that direct sagittal movement of the mandible when the plurality of second shell appliances are worn are equal or progressively larger.

20. The dental appliance system of claim 11 or 18, wherein the first shell-like body comprises a first maxillary shell-like body housing a maxillary dentition and a first mandibular shell-like body housing a mandibular dentition, the first adjustment portion being disposed on a posterior occlusal surface of the first maxillary shell-like body, the occlusal surface of the first adjustment portion having a configuration that mates with the occlusal surface of the tooth at a corresponding location to the jaw.

21. The dental appliance system of claim 20, wherein the second shell-like body comprises a second maxillary shell-like body housing the maxillary dentition and a second mandibular shell-like body housing the mandibular dentition, the second adjustment portion being disposed on a posterior occlusal surface of the second maxillary shell-like body, the occlusal surface of the first adjustment portion having a configuration that mates with the occlusal surface of the tooth at a corresponding location to the counter jaw.

22. The dental appliance system of claim 1, wherein the first shell-like body comprises a first maxillary shell-like body that accommodates a maxillary dentition, the first adjustment being a first flat guide provided on a lingual side of an anterior tooth area of the first maxillary shell-like body for opening anterior bite, the first flat guide comprising a first abutment with an opposing mandibular tooth; the second shell-shaped body comprises a second upper jaw shell-shaped body for accommodating upper jaw dentition, the second adjusting part is a second flat guide structure which is arranged on the lingual side surface of the anterior teeth area of the second upper jaw shell-shaped body and used for opening anterior teeth occlusion, and the second flat guide structure comprises a second propping part propped against the opposite jaw teeth mutually.

23. The dental appliance system of claim 22, wherein the first abutment and/or the second abutment are connected to lingual sides of the plurality of tooth receiving cavities and are disposed in series.

24. The dental appliance system of claim 22, wherein the first abutment and/or the second abutment are each connected to lingual sides of the plurality of tooth receiving cavities and are discretely disposed.

25. The dental appliance system of claim 23 or 24, wherein the first abutment and/or the second abutment are planar surfaces parallel to the occlusal surfaces.

26. The dental appliance system of claim 25, wherein the plane has bite structure thereon for locating the mandibular position, the bite structure being the same shape as the teeth of the anterior mandibular area.

27. The dental appliance system of claim 23 or 24, wherein the first abutment and/or the second abutment is a ramp that directs the anterior movement of the mandible.

28. The dental appliance system of claim 1, further comprising a plurality of third shell appliances corresponding to a third appliance stage, the plurality of third shell appliances having the same geometry, and the geometry of the plurality of third shell appliances being consistent with the geometry of the second shell appliance in the last appliance step of the second appliance stage.

29. The dental appliance system of claim 1, further comprising a plurality of fourth shell appliances corresponding to a fourth appliance stage, wherein the fourth shell appliances comprise a fourth shell body with a plurality of tooth accommodating cavities and a fourth adjusting part which is provided on the surface of the fourth shell body and protrudes towards the jaw direction to adjust the vertical occlusion relationship of the upper jaw and the lower jaw, and the protruding heights of the plurality of fourth adjusting parts gradually decrease with the progress of the appliance until occlusion contact is generated by teeth in the anterior dental area.