CN217744645U - Orthodontic appliance, gap auxiliary device and dental cast - Google Patents

Abstract

The utility model discloses an orthodontic appliance, which comprises an appliance main body and an interdental auxiliary device, wherein the appliance main body comprises at least two tooth vacuoles with gaps, the interdental auxiliary device is arranged in a gap area between the tooth vacuoles, two ends of the interdental auxiliary device are respectively connected with the tooth vacuoles at two ends of the gap area, and the top surface of the interdental auxiliary device comprises an avoidance area corresponding to the marginal ridge areas of the tooth vacuoles at two ends of the gap area and a support area higher than the avoidance area; the avoidance region is lower than the edge ridge region. The utility model discloses just abnormal unscrambler can prevent that the tooth from to the regional slope in clearance, prevents to correct in-process facing rupture, is favorable to improving and rescues the effect. The utility model discloses still provide clearance auxiliary device and dental cast.

Description

Orthodontic appliance, gap auxiliary device and dental cast

Technical Field

The utility model relates to a tooth just abnormal technical field especially relates to a just abnormal unscrambler, clearance auxiliary device and tooth mould.

Background

When the existing invisible orthodontic method meets the condition that the posterior teeth have the dental space, the existing dental space can be kept, enlarged or reduced or closed by wearing the tooth socket according to the requirements of repair or implantation of patients. To aforementioned circumstances, need handle in the facing to in the in-process of correcting, support the adjacent tooth at clearance region both ends, in order to prevent adjacent tooth slope, if the facing is laminating gum in clearance region, then when exerting thrust to adjacent tooth, the application of force is not good, and breaks the facing easily, influences the effect of correcting of stealthy facing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an orthodontic appliance, a gap auxiliary device and a dental cast are provided to increase the moment and improve the correction effect.

In order to solve the above technical problem, in a first aspect, an embodiment of the present invention provides an orthodontic appliance, including an appliance main body and a tooth gap auxiliary device, wherein the appliance main body includes at least two tooth vacuoles with gaps, the tooth gap auxiliary device is disposed in a gap area between the tooth vacuoles, two ends of the tooth gap auxiliary device are respectively connected with the tooth vacuoles at two ends of the gap area, wherein a top surface of the tooth gap auxiliary device includes an avoidance area corresponding to an edge ridge area of the tooth vacuoles at two ends of the gap area, and a support area higher than the avoidance area; the avoidance region is lower than the edge ridge region.

The further technical scheme is as follows: the tooth space assisting device provides a supporting force arm along the horizontal plane direction and/or the vertical direction for tooth vacuoles at two ends of a space area.

The further technical scheme is as follows: the shapes of the two ends of the tooth clearance auxiliary device are matched with the shapes of the side end surfaces of the tooth vacuoles close to the clearance area.

The further technical scheme is as follows: the edge contour of the top of the end surfaces at two ends of the tooth clearance auxiliary device is a curve and is respectively matched with the edge contour of the top of the side end surface of the tooth vacuole close to the clearance area.

The further technical scheme is as follows: the top surface of the interproximal assistance device includes at least one support area, each support area being higher than the avoidance area.

The further technical scheme is as follows: the top surface of the tooth clearance auxiliary device is provided with two supporting areas which are respectively positioned at two sides of the avoiding area.

The further technical scheme is as follows: the top surface of the auxiliary device for the tooth space is lower than the top surfaces of the teeth at two ends of the space area, and the width of the end surface of the auxiliary device for the tooth space is smaller than that of the teeth at two ends of the space area.

The further technical scheme is as follows: the width of the end face of the top face of the dental space assisting device is larger than, equal to or smaller than the width of the end face of the bottom face of the dental space assisting device.

The further technical scheme is as follows: the appliance main body and the auxiliary device for tooth space are of an integrated structure.

In a second aspect, an embodiment of the present invention provides a gap auxiliary device, including a rod body, the rod body is disposed in an interdental space and provides a supporting force arm for teeth at two ends of the interdental space, wherein a top surface of the rod body includes an avoidance region corresponding to edge ridges of the teeth at two ends of the interdental space, and a supporting region higher than the avoidance region; the avoidance zone is lower than the edge ridge.

In a third aspect, the embodiment of the present invention further provides a dental cast, including a dental cast main body and an interdental auxiliary device model, where the dental cast main body includes at least two tooth models with gaps, the interdental auxiliary device model is disposed in a gap region between the tooth models, two ends of the interdental auxiliary device model are respectively connected with the tooth models at two ends of the gap region, and a top surface of the interdental auxiliary device model includes an avoidance region corresponding to edge ridge regions of the tooth models at two ends of the gap region, and a support region higher than the avoidance region; the avoiding region is lower than the edge ridge region, and the dental model main body and the dental space auxiliary device model are of an integrated structure.

The utility model has the advantages of: the utility model discloses just abnormal unscrambler sets up the tooth clearance auxiliary device through corresponding the clearance on the clearance region between the tooth vacuole of unscrambler main part, make the both ends of tooth clearance auxiliary device be connected with the tooth vacuole that is in clearance region both ends respectively, in order to provide the support arm of force to the tooth at clearance region both ends, prevent that the tooth at clearance region both ends from inclining to clearance region department, in addition, can increase the rigidity of the clearance region between the tooth vacuole in the unscrambler main part, prevent that the clearance region from being broken when receiving the thrust that the tooth at clearance region both ends exerted in the correction process; the marginal ridge region of the tooth vacuole of the top surface corresponding clearance region both ends of the auxiliary device for the dental clearance sets up the area of dodging that is less than the marginal ridge of tooth, in order to prevent that the auxiliary device for the dental clearance from colliding with the jaw tooth that clearance region department corresponds during the occlusion, and the area of dodging of auxiliary device for the dental clearance is less than the marginal ridge region, so that auxiliary device for the dental clearance has a take the altitude, effectively increase auxiliary device for the dental clearance rigidity in length direction, make the support arm of force longer, thereby increase moment, be convenient for to the tooth application of force at clearance region both ends, be favorable to improving and correct the effect, and be difficult for the rupture, and simultaneously, moreover, the steam generator is simple in structure, need not to calculate the concrete shape of the tooth that obtains the missing of dental clearance department, calculation requirement and the degree of difficulty are low, high durability and convenient use, and easy production. The utility model discloses a clearance auxiliary device and dental cast also have above-mentioned function, simple structure effectively reduces the calculation degree of difficulty, is convenient for produce and popularize.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a front view of an orthodontic appliance according to a first embodiment of the invention;

fig. 2 is a schematic view of the connection between the gapped tooth vacuoles and the interdental aids of the orthodontic appliance according to the first embodiment of the present invention;

fig. 3 is a schematic end view of an orthodontic appliance according to a first embodiment of the present invention showing the connection of the interdental assistance device to teeth at opposite ends of an interproximal area;

fig. 4 is a schematic view of an edge profile of a top portion of an end face of an interproximal appliance of an orthodontic appliance in accordance with a second embodiment of the invention;

fig. 5 is a schematic view of an edge profile of a top portion of an end face of an interproximal appliance of an orthodontic appliance provided in accordance with a third embodiment of the invention;

fig. 6 is a cross-sectional view of an interdental aid for an orthodontic appliance according to a fourth embodiment of the present invention;

fig. 7 is a cross-sectional view of an interdental aid of an orthodontic appliance according to a fifth embodiment of the present invention;

fig. 8 is a cross-sectional view of an interdental aid for an orthodontic appliance in accordance with a sixth embodiment of the present invention;

fig. 9 is a cross-sectional view of an interdental aid for an orthodontic appliance according to a seventh embodiment of the present invention;

fig. 10 is a cross-sectional view of an interdental aid for an orthodontic appliance according to an eighth embodiment of the present invention;

fig. 11 is a front view of an orthodontic appliance according to a ninth embodiment of the present invention;

fig. 12 is a front view of an orthodontic appliance according to a tenth embodiment of the invention;

fig. 13 is a schematic structural view of the gap auxiliary device provided by the present invention;

fig. 14 is a side view of a clearance aid provided by the present invention;

FIG. 15 is a schematic view of the connection of the gap assist device of the present invention to teeth at both ends of a tooth gap;

fig. 16 is a schematic structural view of a dental cast provided by the present invention;

fig. 17 is a front view of a dental cast provided by the present invention;

fig. 18 is a side view of the dental cast provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

When the tooth socket is attached to the gum in the interdental area, the force is not applied well and the tooth socket is broken easily when the thrust is applied to adjacent teeth. To overcome the above problems, in the prior art, the dental prosthesis cavity is mainly manufactured to avoid the problem of poor force application due to too close to the gum, so that the thrust applied to the teeth at the two ends of the gap area is improved, and the teeth are further prevented from inclining. The artificial tooth vacuole mainly adopts two modes of software manufacturing and model manual manufacturing, wherein in the software manufacturing mode, the size of the artificial tooth vacuole can be automatically adjusted according to the size of the tooth clearance after software is added, and the size of the artificial tooth vacuole can be automatically adjusted when the tooth clearance is adjusted along with the change of the tooth arrangement of a patient in the correcting process, but the artificial tooth vacuole manufactured by the software has high requirements on an algorithm, and can be researched and developed only by design software which is independently researched and developed or design software which provides a corresponding development port, so that the artificial tooth vacuole is difficult to popularize; in the manual model making mode, false tooth vacuoles can be manually added on a printed 3D model, so that the model is easy to popularize, the working threshold is low, but the efficiency is low, the consumed time is long, and the overall productivity is influenced.

Referring to fig. 1 to 3, fig. 1 is a front view of an orthodontic appliance according to a first embodiment of the present invention, the orthodontic appliance 10 includes an appliance main body 11 and an auxiliary device 12 for tooth space, the appliance main body 11 includes at least two tooth cavities 111 with gaps, the auxiliary device 12 for tooth space is disposed in a gap area between the tooth cavities 111, two ends of the auxiliary device 12 for tooth space are respectively connected to the tooth cavities 111 at two ends of the gap area, wherein a top surface of the auxiliary device 12 for tooth space includes an avoidance area 121 corresponding to a marginal ridge area of the tooth cavities 111 at two ends of the gap area, and a support area 122 higher than the avoidance area 121; the avoidance region 121 is lower than the edge ridge region. The marginal ridge 21 refers to a valley in the top surface of the tooth 20, and the marginal ridge region of the tooth vacuole 111 refers to a region of the tooth vacuole 111 corresponding to the marginal ridge 21 of the tooth 20. The appliance body 11 including at least two tooth cavities 111 with gaps means that the appliance body 11 includes a plurality of tooth cavities 111 corresponding to the teeth 20 and that at least two tooth cavities 111 in the plurality of tooth cavities 111 have gaps therebetween. The spacing of the tooth cavities 111 corresponds to the spacing between teeth, which may be the spacing between two teeth 20 due to a missing tooth, the spacing between two teeth 20 due to a sparse tooth, or other conditions not listed that may result in a spacing between teeth 20. The gap region between the tooth cavities 111 of the appliance main body 11 in the orthodontic appliance 10 is a region where the appliance main body 11 is disposed corresponding to the position of the tooth gap, and the appliance main body 11 includes the tooth cavities 111 and the gap region disposed corresponding to the tooth gap.

Wherein the arrow indicates the direction of the support moment arm. The interdental assistance device 12 may have an elongated shape, and the length of the interdental assistance device 12 corresponds to the length of the gap region between the tooth vacuoles 111 to better connect with the tooth vacuoles 111 having gaps on the appliance body 11. In this embodiment, two sides of the auxiliary interdental device 12 may be linear and parallel to each other, so that the auxiliary interdental device 12 is a straight rod. The top surface of the interdental assistance device 12 includes an avoidance region 121 corresponding to the marginal ridge region of the tooth vacuole 111 at both ends of the gap region, and a support region 122 higher than the avoidance region 121. The other regions of the top surface of the interdental assistance device 12 except the avoidance region 121 may be higher than the avoidance region 121, or a part of the other regions of the top surface of the interdental assistance device 12 except the avoidance region 121 is higher than the avoidance region 121 and the other part is not higher than the avoidance region 121, and the avoidance region 121 is lower than the marginal ridge region. The orthodontic appliance 10 is provided with the tooth space auxiliary device 12 on the gap area between the tooth vacuoles 111 of the appliance main body 11 through corresponding tooth spaces to connect the tooth vacuoles 111 on the appliance main body 11 so as to provide a supporting moment arm for the teeth 20 at two ends of the gap area, and prevent the teeth 20 at two ends of the gap area from inclining to the tooth spaces, wherein the teeth 20 at two ends of the gap area refer to the teeth 20 corresponding to the tooth vacuoles 111 at two ends of the gap area; in addition, the rigidity of the gap regions between the tooth cavities 111 on the orthodontic appliance 10 can be increased, preventing the gap regions from being broken by the thrust exerted by the teeth at the two ends of the gap regions during the correction process; the top surface of the auxiliary device for dental space 12 is provided with an avoidance area 121 corresponding to the marginal ridge area of the tooth vacuole 111 at the two ends of the space area, and the avoidance area 121 is lower than the marginal ridge area of the tooth vacuole 111 and the marginal ridge 21 of the tooth 20, so as to prevent the auxiliary device for dental space 12 from colliding with teeth of the jaw at the space between the teeth during occlusion; the auxiliary device for dental clearance 12 has a certain height, the top surface of the auxiliary device for dental clearance 12 is at least partially higher than the avoiding region 121, the rigidity of the auxiliary device for dental clearance 12 in the length direction is effectively increased, the supporting force arm is longer, the moment is increased, force application to the teeth 20 at the two ends of the clearance region is facilitated, the improvement and correction effects are facilitated, the tooth is not easy to break, meanwhile, the structure is simple, the specific shape of missing teeth at the dental clearance position is not required to be calculated, the calculation requirement and the difficulty are low, the use is convenient, and the production is easy.

Specifically, the interproximal device 12 provides a moment arm of support in the horizontal and/or vertical direction to the teeth 20 at either end of the interproximal area. Wherein, when the teeth 20 to be corrected are stretched or depressed in the gingival engaging direction, the direction of the supporting moment arm provided by the auxiliary device 12 for the teeth 20 at the two ends of the gap area is vertically upward or vertically downward; when the teeth 20 to be corrected need to be expanded or contracted, the direction of the supporting arm of force provided by the auxiliary device 12 for supporting the teeth 20 at both ends of the gap region is toward the labial side or toward the lingual side, and the direction of the supporting arm of force provided by the auxiliary device 12 for supporting the tooth vacuoles 111 at both ends of the gap region is toward the labial side or toward the lingual side.

Specifically, the appliance main body 11 and the interdental assistance device 12 are of an integral structure. The end surfaces of both ends of the interdental assistance device 12 are flat surfaces so as to respectively fit the side end surfaces of the teeth 20 at both ends of the gap region near the interdental space, and more preferably, to apply force to the teeth 20 at both ends of the gap region.

Specifically, the shapes of both ends of the interdental assistance device 12 match the shapes of the side end surfaces of the tooth vacuoles 111 located at both ends of the gap region near the gap region. Preferably, the edge contour of the top of the end surfaces of both ends of the tooth space assisting device 12 is curved to match the edge contour of the top of the side end surfaces of the tooth vacuoles 111 of both ends of the space region near the space region, respectively, and the influence on the comfort of the user in use can be avoided. The shape of the edge profile of the top of the end faces of both ends of the interdental assistance device 12 may be different and gradually transits along the length direction of the interdental assistance device 12. Of course, in some embodiments, the two ends of the auxiliary device 12 have the same size and height, so that the force applied by the auxiliary device 12 to the teeth 20 at the two ends of the gap area is the same and the force applied to the teeth 20 at the two ends of the gap area is uniform, and the edge contour of the top of the end surfaces of the two ends of the auxiliary device 12 is the same, so that the top surface of the auxiliary device 12 is uniform along the length direction.

Specifically, the top surface of the interdental assistance device 12 is lower than the top surfaces of the teeth 20 at both ends of the gap region, and the width of the end surface of the interdental assistance device 12 is smaller than the width of the end surface of the teeth 20 at both ends of the gap region. Wherein the top surface of the auxiliary device 12 is lower than the top surfaces of the teeth 20 at both ends of the gap region to prevent the collision of the auxiliary device 12 with the teeth of the jaw at the gap when biting. The avoidance region 121 of the top surface of the interdental assistance device 12 is lower than the marginal ridges 21 of the teeth 20 at both ends of the gap region, and the support region 122 of the top surface of the interdental assistance device 12 is lower than the lingual and buccal cusps of the teeth 20 at both ends of the gap region. The lingual apex refers to a projection of the top surface of the tooth 20 on the side near the tongue, and the buccal apex refers to a projection of the top surface of the tooth 20 on the side near the cheek. The width of the end surface of the auxiliary device 12 is smaller than the width of the end surface of the teeth 20 at both ends of the gap region, so that the auxiliary device 12 is prevented from protruding from both sides of the teeth 20 to affect the comfort of the user. The interproximal device 12 may be provided across the upper ends of the teeth 20 at both ends of the interproximal area.

Specifically, the width of the end face of the top face of the interdental assist device 12 is smaller than the width of the end face of the bottom face of the interdental assist device 12. Preferably, in the present embodiment, the width of the end surface of the interdental assistance device 12 gradually increases from top to bottom. Wherein, the width of the end face of the auxiliary device 12 gradually increases from top to bottom, that is, the width of the end face of the auxiliary device 12 gradually increases along the direction toward the gum, so as to effectively increase the rigidity of the auxiliary device 12 in the width direction. For teeth 20 to be corrected for movement in the gingival coaptation direction, increasing the width increases the moment arm of the interproximal appliance 12, thereby increasing the moment. While for teeth 20 that do not require correction in the gingival approach, increasing the width may better maintain the interproximal device 12 in the gingival-engaged position. The maximum end face width of the interdental assistance device 12 is smaller than the minimum end face width of the teeth 20 at both ends of the gap region to prevent the interdental assistance device 12 from protruding outside the teeth 20.

Specifically, the top surface of the interdental assistance device 12 includes at least one support region 122, and each support region 122 is higher than the avoidance region 121. The support region 122 is provided to facilitate the application of force to the corresponding tooth 20, which effectively increases the rigidity of the interdental assistance device 12 in the longitudinal direction.

Specifically, in the present embodiment, the top surface of the interdental assistance device 12 has two support regions 122, and the two support regions 122 are respectively located at two sides of the avoidance region 121, so that the top surface of the interdental assistance device 12 may have a convex-concave shape. The heights of the two support regions 122 may be equal, the avoidance region 121 is located in the center of the top surface of the interdental space assistance device 12, and the sections of the avoidance region 121 and the support regions 122 are both semicircular.

Please refer to fig. 4 and 5, fig. 4 shows a schematic diagram of an edge contour of a top portion of an end surface of an auxiliary device for dental space of an orthodontic appliance provided by the second embodiment of the present invention, fig. 5 shows a schematic diagram of an edge contour of a top portion of an end surface of an auxiliary device for dental space of an orthodontic appliance provided by the third embodiment of the present invention, two support regions 122 have unequal heights, an avoidance region 121 is located in a center of a top surface of the auxiliary device for dental space 12, a cross section of the avoidance region 121 and the support region 122 is arc-shaped, and the rest of the structure and the function are similar to those of the first embodiment, which is not described herein again. Of course, in some embodiments, the cross-section of the avoiding region 121 and the supporting region 122 may also be a polygon, and the corners of the polygon are rounded so as not to affect the comfort of the user.

Referring to fig. 6, fig. 6 is a cross-sectional view of an auxiliary device for dental space of an orthodontic appliance according to a fourth embodiment of the present invention, in this embodiment, the width of the top surface of the auxiliary device for dental space 12 is equal to the width of the bottom surface of the auxiliary device for dental space 12, and the width of the end surface of the auxiliary device for dental space 12 is kept uniform from top to bottom. The rest of the structure and function are similar to those of the first embodiment, and are not repeated herein.

Referring to fig. 7, fig. 7 is a cross-sectional view of an auxiliary device for dental space of an orthodontic appliance according to a fifth embodiment of the present invention, in which the width of the top surface of the auxiliary device for dental space 12 is greater than the width of the bottom surface of the auxiliary device for dental space 12. Wherein, the end face width of the lower end part of the auxiliary device for dental clearance 12 is smaller than the end face width of the upper end part of the auxiliary device for dental clearance 12, the end face width of the upper end part of the auxiliary device for dental clearance 12 is gradually reduced towards the middle part, and the end face width of the lower end part of the auxiliary device for dental clearance 12 is gradually increased towards the middle part. The rest of the structure and the function are similar to those of the first embodiment, and are not described herein again.

Referring to fig. 8, fig. 8 is a cross-sectional view of an auxiliary device for dental space of an orthodontic appliance according to a sixth embodiment of the present invention, in which the width of the top surface of the auxiliary device for dental space 12 is smaller than the width of the bottom surface of the auxiliary device for dental space 12. Wherein, the end face width of the lower end part of the auxiliary device for dental clearance 12 is greater than the end face width of the upper end part of the auxiliary device for dental clearance 12, and the end face width of the upper end part of the auxiliary device for dental clearance 12 is gradually increased towards the middle part, and the end face width of the lower end part of the auxiliary device for dental clearance 12 is consistent with the end face width of the middle part. The rest of the structure and the function are similar to those of the first embodiment, and are not described herein again.

Referring to fig. 9, fig. 9 is a cross-sectional view of an interdental space assistor of an orthodontic appliance according to a seventh embodiment of the present invention, in this embodiment, the top surface of the interdental space assistor 12 has only one supporting region 122, the supporting region 122 is higher than the avoiding region 121, the supporting region 122 is located on one side of the avoiding region 121, and the other side of the avoiding region 121 is curved and lower than the avoiding region 121. The rest of the structure and the function are similar to those of the first embodiment, and are not described herein again.

Referring to fig. 10, fig. 10 is a cross-sectional view of an auxiliary device for dental space of an orthodontic appliance according to an eighth embodiment of the present invention, in this embodiment, the top surface of the auxiliary device for dental space 12 has only one supporting region 122, the supporting region 122 is higher than the avoiding region 121, the supporting region 122 is located on one side of the avoiding region 121, and the other side of the avoiding region 121 is inclined toward the bottom of the auxiliary device for dental space 12 to form an oblique line and is lower than the avoiding region 121. The rest of the structure and the function are similar to those of the first embodiment, and are not described herein again.

Referring to fig. 11, fig. 11 is a front view of an orthodontic appliance according to a ninth embodiment of the present invention, in which the auxiliary device 12 is a bent rod, and the auxiliary device 12 is curved in an arc shape along a length direction toward a cheek direction. The rest of the structure and the function are similar to those of the first embodiment, and are not described herein again.

Referring to fig. 12, fig. 12 is a front view of an orthodontic appliance according to a tenth embodiment of the present invention, in this embodiment, the auxiliary interdental device 12 is a curved rod, and the auxiliary interdental device 12 is curved in an arc shape along a length direction toward a tongue direction. The rest of the structure and the function are similar to those of the first embodiment, and are not described herein again.

Referring to fig. 13 to 15, fig. 13 is a schematic structural view of the gap auxiliary device provided in the present invention, the gap auxiliary device 40 includes a rod 41 disposed in the interdental space, the rod 41 provides a supporting arm of force for the teeth at two ends of the interdental space, wherein the top surface of the rod 41 includes an avoiding region 42 corresponding to the marginal ridge of the teeth 20 at two ends of the interdental space, and a supporting region 43 higher than the avoiding region 42; the relief zone 42 is below the edge ridge.

Where the arrow indicates the direction of the support moment arm, the interproximal space may be the space between two teeth 20 due to missing teeth, the space between two teeth 20 due to sparse teeth, or other non-enumerated situations that may result in a space between teeth 20, and the marginal ridge may be a depression in the top surface of a tooth 20. The shaft 41 may be elongated, and the length of the shaft 41 is equal to the length of the interdental space so as to better connect with the teeth 20 at both ends of the interdental space. The two sides of the rod body 41 can be linear and parallel to each other, so that the rod body 41 is a straight rod. The top surface of the stem 41 includes an avoidance region 42 corresponding to the marginal ridge of the tooth 20 at both ends of the interdental space and a support region 43 higher than the avoidance region 42. At least a part of the other areas of the top surface of the rod body 41 except the avoidance area 42 is higher than the avoidance area 42, the other areas of the top surface of the rod body 41 except the avoidance area 42 are higher than the avoidance area 42, or a part of the other areas of the top surface of the rod body 41 except the avoidance area 42 is higher than the avoidance area 42 and the other part of the other areas is not higher than the avoidance area 42. The gap auxiliary device 40 includes a rod body 41 disposed at the gap between teeth to provide a supporting arm of force for the teeth 20 at both ends of the gap between teeth, and to prevent the teeth 20 at both ends of the gap between teeth from inclining to the gap between teeth; the top surface of the rod body 41 is provided with an avoidance area 42 corresponding to the marginal ridge of the teeth 20 at the two ends of the dental space, and the avoidance area 42 is lower than the marginal ridge so as to prevent the dental space from colliding with the gap auxiliary device 40 when being occluded; the top surface of the rod body 41 is higher than the avoidance area 42 at least in partial region, so that the rod body 41 has a certain height, the rigidity of the rod body 41 in the length direction is effectively increased, the supporting force arm is longer, the moment is increased, the force application to the teeth 20 at two ends of the dental space is facilitated, the improvement of the correcting effect is facilitated, the fracture is not easy to occur, and meanwhile, the structure is simple, the specific shape of the missing teeth corresponding to the dental space is not required to be calculated, the calculation requirement and the difficulty are low, the use is convenient, and the production is easy.

Specifically, the gap assist device 40 provides a moment arm of support in the horizontal and/or vertical direction to the teeth 20 at either end of the tooth gap. Wherein, when the tooth 20 to be corrected is stretched or pressed down in the gingival engaging direction, the direction of the supporting moment arm provided by the gap auxiliary device 40 to the tooth 20 at the two ends of the tooth gap is vertically upward or vertically downward; when it is desired to expand or contract the arch of the teeth 20 to be corrected, the moment arm of support provided by the gap assist device 40 to the teeth 20 at the ends of the gap is oriented labially or lingual.

Please refer to fig. 16 to 18, fig. 16 is a schematic structural diagram of a dental cast provided by the present invention, the dental cast 30 includes a dental cast main body 31 and an interdental auxiliary device model 32, the dental cast main body 31 includes at least two tooth models with gaps, the interdental auxiliary device model 32 is disposed in a gap region between the tooth models, two ends of the interdental auxiliary device model 32 are respectively connected to the tooth models at two ends of the gap region, a top surface of the interdental auxiliary device model 32 includes an avoiding region 321 corresponding to the marginal ridge regions of the tooth models at two ends of the gap region, and a supporting region higher than the avoiding region 321; the avoiding region 321 is lower than the marginal ridge region, and the dental model main body 31 and the interdental auxiliary device model 32 are of an integral structure.

The dental model main body 31 includes at least two tooth models having gaps, which means that the dental model main body 31 includes a plurality of tooth models corresponding to the teeth and at least two tooth models in the plurality of tooth models have gaps therebetween. The gap between the tooth models corresponds to the gap between two teeth due to missing teeth, or the gap between two teeth due to sparse teeth, or other situations not listed that may lead to gaps between teeth. The gap region between the dental models of the dental model main body 31 of the dental model 30 refers to a region where the dental model main body 31 is disposed corresponding to the position of the interdental space, the marginal ridge refers to a recessed position in the top surface of the tooth, and the marginal ridge region of the dental model refers to a region on the dental model corresponding to the marginal ridge of the tooth. The tooth space assisting device model 32 may have a long strip shape, and the length of the tooth space assisting device model 32 is the same as the length of the tooth space to be better connected with the tooth models at both ends of the corresponding space region of the dental cast main body 31. The top surface of the interdental assistance device model 32 includes an avoidance domain 321 corresponding to marginal ridge domains of the tooth model at both ends of the gap domain, and a support domain higher than the avoidance domain 321. At least a part of the other areas of the top surface of the interdental assistance device model 32 except the avoiding area 321 is higher than the avoiding area 321, the other areas of the top surface of the interdental assistance device model 32 except the avoiding area 321 may be higher than the avoiding area 321, or a part of the other areas of the top surface of the interdental assistance device model 32 except the avoiding area 321 may be higher than the avoiding area 321 and the other part of the other areas may not be higher than the avoiding area 321. The dental cast 30 is provided with the dental gap auxiliary device model 32 on the dental cast main body 31 through corresponding dental gaps to connect the dental models at two ends of the dental cast main body 31 corresponding to the gap regions, so that the braces prepared according to the dental cast 30 provide supporting force arms for teeth at two ends of the dental gaps, and the teeth at two ends of the dental gaps are prevented from inclining to the dental gaps; the marginal ridge areas of the tooth model at the two ends of the top surface of the dental space auxiliary device model 32 corresponding to the space areas are provided with avoidance areas 321, and the avoidance areas 321 are lower than the marginal ridge areas so as to prevent the tooth socket prepared according to the dental model 30 from colliding with teeth of the jaw at the dental space when being occluded; the top surface of the dental space auxiliary device model 32 is at least partially higher than the avoiding region 321, so that the dental space auxiliary device model 32 has a certain height, so that the tooth socket prepared according to the dental model 30 has a certain height at the dental space, the rigidity of the tooth socket in the length direction of the dental space is effectively increased, so that the supporting force arm is longer, thereby increasing the moment, the tooth force application to the two ends of the dental space is convenient, the improvement of the correcting effect is facilitated, the tooth socket is not easy to break, meanwhile, the structure is simple, the concrete shape of the missing tooth corresponding to the dental space is not required to be obtained through calculation, the calculation requirement and the difficulty are low, the use is convenient, and the production is easy.

To sum up, the orthodontic appliance of the present invention sets the auxiliary device for tooth clearance on the clearance area between the tooth vacuoles on the appliance body corresponding to the clearance, so that both ends of the auxiliary device for tooth clearance are respectively connected with the tooth vacuoles at both ends of the clearance area, so as to provide a supporting force arm for the teeth at both ends of the clearance area, and prevent the teeth at both ends of the clearance area from inclining to the tooth clearance; the marginal ridge setting of the tooth that the top surface of the auxiliary device in the tooth clearance corresponds regional both ends in clearance is less than the dodge region of marginal ridge, produce the collision to the jaw tooth with the regional department in clearance in order to prevent to bite the auxiliary device in the tooth clearance, and the top surface of the auxiliary device in the tooth clearance is at least partly regional higher than dodging the region, so that the auxiliary device in the tooth clearance has a take the altitude, effectively increase the rigidity of auxiliary device in length direction, make the support arm of force longer, thereby increase moment, be convenient for to the tooth application of force at the regional both ends in clearance, be favorable to improving and correct the effect, and be difficult for breaking, and simultaneously, the steam generator is simple in structure, need not to calculate the concrete shape of the disappearance tooth that obtains the tooth clearance department, calculation requirement and the degree of difficulty are low, high durability and convenient use, easy production. And simultaneously, the utility model discloses a clearance auxiliary device and dental cast also have above-mentioned function, and simple structure effectively reduces the calculation degree of difficulty, is convenient for produce and popularize.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (11)

1. An orthodontic appliance, comprising an appliance main body and an interdental assistance device, wherein the appliance main body comprises at least two tooth vacuoles with gaps, the interdental assistance device is disposed in a gap region between the tooth vacuoles, and both ends of the interdental assistance device are respectively connected to the tooth vacuoles at both ends of the gap region, wherein a top surface of the interdental assistance device comprises an avoidance region corresponding to a marginal ridge region of the tooth vacuole at both ends of the gap region, and a support region higher than the avoidance region; the avoidance region is lower than the edge ridge region.

2. The orthodontic appliance of claim 1 wherein the interproximal device provides a moment arm of support in the horizontal and/or vertical direction to the tooth vacuoles at either end of the interproximal area.

3. The orthodontic appliance of claim 1 wherein the shape of the ends of the interproximal appliance match the shape of the side faces of the tooth vacuoles adjacent to the interproximal region.

4. The orthodontic appliance of claim 3 wherein the profile of the edges of the tops of the two end surfaces of the interproximal tooth appliance are curvilinear and match the profile of the edges of the tops of the side end surfaces of the tooth vacuoles adjacent to the interproximal area.

5. The orthodontic appliance of claim 3 wherein the top surface of the interproximal appliance includes at least one support region, each support region being higher than the relief region.

6. The orthodontic appliance of claim 5 wherein the top surface of the interproximal device has two support areas, one on each side of the bypass area.

7. The orthodontic appliance of claim 1 wherein the top surface of the interproximal device is lower than the top surface of the teeth at either end of the interproximal region, and the width of the end surface of the interproximal device is less than the width of the end surface of the teeth at either end of the interproximal region.

8. The orthodontic appliance of claim 7 wherein the width of the top surface of the interproximal device is greater than, equal to, or less than the width of the bottom surface of the interproximal device.

9. The orthodontic appliance of any one of claims 1 to 8, wherein the appliance body is of unitary construction with the interproximal appliance.

10. A gap auxiliary device is characterized by comprising a rod body, wherein the rod body is arranged in a gap between teeth and provides a supporting force arm for the teeth at two ends of the gap between the teeth, and the top surface of the rod body comprises an avoidance area corresponding to marginal ridges of the teeth at two ends of the gap between the teeth and a supporting area higher than the avoidance area; the avoidance region is lower than the edge ridge.

11. A dental model is characterized by comprising a dental model main body and an interdental accessory device model, wherein the dental model main body comprises at least two tooth models with gaps, the interdental accessory device model is arranged in a gap area between the tooth models, two ends of the interdental accessory device model are respectively connected with the tooth models at two ends of the gap area, and the top surface of the interdental accessory device model comprises an avoidance area corresponding to marginal ridge areas of the tooth models at two ends of the gap area and a support area higher than the avoidance area; the avoiding region is lower than the edge ridge region, and the dental model main body and the dental space auxiliary device model are of an integrated structure.

Images