CN214157550U - Snap-fastener type accessory and snap-fastener type correcting device - Google Patents

Abstract

The utility model discloses a snap-fastener type accessory and a snap-fastener type orthotic device, belonging to the technical field of dental bracket-free invisible orthodontic treatment, comprising a positive part, wherein the two ends of the side wall of the positive part are respectively adjacent to the bottom surface of the positive part and the top surface of the positive part, the outer wall of the positive part is provided with a first matching structure along the circumferential direction of the positive part, the positive part is bonded on the buccal labial surface or the lingual surface of a target tooth through the bottom surface of the positive part, and the positive part is correspondingly arranged with the cavity of the orthodontic device; the female part is fixedly arranged in the cavity and is provided with an annular inner wall used for matching with the male part, and the annular inner wall is provided with a second matching structure which is matched with the first matching structure along the circumferential direction of the cavity; a snap-fastener type orthotic device. The utility model discloses a snap-fastener formula annex can realize the tooth and the inseparable combination of correcting the ware diaphragm, makes the tooth can realize parallel translation, twist reverse, raise, anterior teeth torque control etc. in correcting, improves the tooth and corrects efficiency.

Description

Snap-fastener type accessory and snap-fastener type correcting device

Technical Field

The utility model belongs to the technical field of the stealthy correction of dentistry bracket that does not have, especially, relate to a snap-fastener formula annex and snap-fastener formula orthotic devices.

Background

The bracket-free invisible orthodontic technology appears in the nineties of the last century, and is an orthodontic technology which is based on computer aided design and engineering manufacturing technology, carries out orthodontic design under a three-dimensional digital model, and manufactures a transparent bracket-free invisible appliance to carry out tooth movement. The bracket-free invisible appliance is mainly made of thermoplastic materials generated by computer design and is adhered to an accessory on the surface of a tooth, and the thermoplastic materials and the accessory cooperatively exert the correction efficiency of tooth movement.

The accessory is a resin structure which is used for assisting the orthodontic device in the bracket-free orthodontic device to better realize tooth movement, is mainly adhered to the labial and buccal surfaces of teeth and has the functions of retention and conduction orthodontic. In the clinical application of the invisible orthodontic technology, the adhesion of the attachment is a very important link, and the efficiency of tooth movement and the achievement of the orthodontic goal are directly influenced. At each stage of the appliance, the attachment is fully engaged with the appliance to provide enhanced retention and aid in tooth movement.

The appearance of the accessory which is generally used clinically at present is a smooth plane or a convex surface, the binding force of the accessory and the appliance diaphragm is small, so that the tooth correction is mainly performed by inclined movement and is difficult to perform parallel movement, torsion, lifting and anterior tooth torque control, the integral tooth correction efficiency is low, and the correction success rate is about 50% -80%.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that prior art exists and propose, its purpose provides one kind and can realize the tooth and the inseparable combination of correcting the ware diaphragm, makes the tooth can realize parallel translation, twist reverse, raise, anterior tooth torque control etc. in correcting, improves the tooth and corrects the snap-fastener formula annex of efficiency.

A second object of the present invention is to provide a snap-fastener type correction device.

In order to achieve the above object, an embodiment of a first aspect of the present invention provides a snap-fastener type accessory, including:

the male component comprises a male component outer wall, a male component bottom surface and a male component top surface which are parallel to each other, one end of the male component outer wall is adjacent to the male component bottom surface, the other end of the male component outer wall is adjacent to the male component top surface, the male component outer wall is provided with a first matching structure along the circumferential direction of the male component outer wall, the male component is bonded to the labial-buccal surface or the lingual surface of a target tooth through the male component bottom surface, and the male component is arranged corresponding to a cavity of the appliance;

the female part is fixedly arranged in a cavity of the appliance and provided with an annular inner wall for matching with the male part, and the annular inner wall is provided with a second matching structure which is matched with the first matching structure along the circumferential direction of the cavity;

when the appliance is worn on the dentition, the female part is clamped with the first matching structure of the male part through the second matching structure of the female part so as to be fixedly connected with the male part.

Furthermore, the cross section of the male part adopts an oval or rectangular or trapezoidal or triangular structure.

Furthermore, the male part adopts a special-shaped column structure, and the first matching structure is a groove which is recessed towards the interior of the male part along the circumferential direction of the male part;

the second matching structure of the female part is a bulge which is arranged on the annular inner wall of the female part, protrudes inwards along the circumferential direction of the cavity and is matched with the groove of the male part.

Further, the negative part is including solid fixed ring, gu fixed ring is including solid fixed ring inner wall and solid fixed ring outer wall, gu the fixed ring inner wall is equipped with the arch, gu fixed ring outer wall diameter suits with the die cavity inner wall, the negative part passes through gu fixed ring outer wall is fixed to be set up in the die cavity.

Further, negative part still includes the bottom plate, gu fixed ring one end is connected perpendicularly the bottom plate, the bottom plate includes bottom plate internal surface and bottom plate surface, negative part passes through gu fixed ring outer wall with bottom plate surface fixed sets up in the die cavity.

Further, the male part is made of tooth-colored or transparent resin or plastic or ceramic material, and the female part is made of tooth-colored or transparent resin or plastic material.

Furthermore, a clamping groove is arranged in the middle of the male part, and the diameter D of an opening part of the clamping groove is smaller than the diameter D of the position with the largest diameter of the inner cross section of the clamping groove;

the female part also comprises a convex part which is arranged on the inner surface of the bottom plate, and the shape of the convex part is matched with that of the clamping groove;

when the orthodontic appliance is worn on the dentition, the female part is fixedly connected with the male part through the protrusion of the female part being clamped in the groove of the male part and the bulge being tightly matched with the clamping groove of the male part.

Furthermore, the male part comprises a male part bottom plate and a plurality of matching rods, the matching rods are vertically arranged on one side of the male part bottom plate and are circumferentially arranged along the male part bottom plate at intervals, convex edges are arranged on the outer circumferential side of the male part of the matching rods, and the convex edges of the matching rods are positioned on the same circular ring;

the second matching structure of the female part is an arc-shaped groove which is arranged on the annular inner wall of the female part, is outwards concave along the circumferential direction of the cavity and is matched with the convex edge of the male part.

In order to achieve the above object, an embodiment of a second aspect of the present invention provides a snap-fastener type correction device, including:

the snap-on attachment according to any of the preceding claims:

and the snap-fastener type accessory corresponding to the target tooth position of the appliance is provided with a cavity for accommodating the snap-fastener type accessory.

Because the traditional accessories can only be wrapped by the membrane of the appliance, the accessories are not tightly connected with the appliance, and can only transmit thrust in a single direction under most conditions, and teeth mainly move in an inclined way. The utility model discloses a snap-fastener formula annex passes through the protruding tight fit of negative part in the groove of positive part, makes positive part and correction ware realize inseparable connection, corrects the produced three-dimensional ascending power of correcting of effect of elasticity of ware itself and can effectively conduct to the tooth through snap-fastener formula annex, makes the tooth can realize moving as a whole, can carry out parallel translation, twist reverse, raise, preceding tooth torque control etc. and then improve the tooth and correct efficiency.

Drawings

FIG. 1 is a cross-sectional view of a snap-on orthosis worn on a target tooth according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a snap-on orthosis for a target tooth according to a second embodiment of the present invention;

fig. 3 is a cross-sectional view of a snap-on orthodontic device worn on a target tooth according to a third embodiment of the present invention;

fig. 4 is a cross-sectional view of a snap-on orthodontic device worn on a target tooth according to a fourth embodiment of the invention;

fig. 5 is a cross-sectional view of a target tooth wearing snap-on orthosis according to a fifth embodiment of the present invention;

fig. 6 is a cross-sectional view of a snap-on orthosis worn on a target tooth according to a sixth embodiment of the present invention;

fig. 7 is a schematic structural diagram of a male component in a fifth embodiment and a sixth embodiment of the present invention; FIG. 8 is a schematic structural view of a male component worn on a target tooth according to an embodiment of the present invention;

fig. 9 is a schematic structural view of another male component worn on a target tooth according to an embodiment of the present invention.

Wherein: 1. a male part; 11. a male component bottom surface; 12. an outer wall of the male part; 13. a card slot; 14. A male component top surface; 15. a male component base plate; 16. a mating rod; 17. a rib; 2. a female part; 20. an annular inner wall; 21. a fixing ring; 22. the inner wall of the fixing ring; 23. a base plate; 24. a projection; 25. An inner surface of the bottom plate; 26. the outer wall of the fixing ring; 27. an outer surface of the base plate; 3. an appliance; 31. a cavity; 4. A target tooth.

In the figure, the diameter of the opening of the card slot is D, and the diameter of the maximum diameter of the internal cross section of the card slot is D.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples:

as shown in fig. 1 to 8, the embodiment of the present invention provides a snap-on attachment comprising a male part 1 and a female part 2 for cooperation.

Positive part 1, positive part 1 includes positive part outer wall 12, positive part bottom surface 11 and positive part top surface 14 that are parallel to each other and constitutes, positive part outer wall 12 one end is adjoined positive part bottom surface 11, positive part outer wall 12 other end is adjoined positive part top surface 14, the positive part outer wall is equipped with along its first cooperation structure of circumference, positive part passes through positive part bottom surface 11 bonds in the labial buccal surface or the lingual surface of target tooth, positive part corresponds the setting with the die cavity of correcting the ware. Specifically, the appliance 3 is a commonly used bracket-free invisible tooth appliance 3.

The female part 2 is fixedly arranged in a cavity of the appliance 3, the female part is provided with an annular inner wall 20 used for being matched with the male part, and the annular inner wall 20 is provided with an edge along the circumferential direction of the cavity and a second matching structure matched with the first matching structure.

Its second cooperation structure with its first cooperation structure phase-match makes positive part 1 and negative part 2 can the tight fit, and the tooth can realize overall movement, can carry out parallel translation, twist, lift, anterior teeth torque control etc. and then improves the tooth and correct efficiency. Further, according to the difference of the material and the shape of the snap-button type accessory, the arc height of the outer wall of the male part, the change of the material and the thickness of the membrane of the appliance 3 and the difference of the moving distance of the teeth in the tooth straightening scheme, the binding force between the male part 1 and the female part 2 can be adjusted to be in a required range. Wherein the female part can be manufactured separately from the orthosis or can be manufactured integrally with the orthosis.

When the appliance is worn on the dentition, the female part 2 is fixedly connected with the male part through the second matching structure of the female part being clamped with the first matching structure of the male part 1.

The traditional accessories can only be wrapped by the membrane of the appliance 3, the accessories are not tightly connected with the appliance 3, the traditional accessories can only transmit thrust in a single direction under most conditions, and teeth mainly move in an inclined mode. The utility model discloses a snap-fastener formula annex passes through the second cooperation structure tight fit of negative part 2 and fits the first cooperation structure of positive part 1, makes 1 firm connection of positive part in correcting ware 3, corrects the produced three-dimensional ascending power of correcting of effect of elasticity of ware 3 itself and can effectively conduct to the tooth through snap-fastener formula annex, makes the tooth can realize moving as a whole, can carry out parallel translation, twist reverse, raise, torque control etc. and then improve the tooth and correct efficiency.

Furthermore, when the bracket-free correction is carried out, the snap-fastener type accessory of the utility model is generally used in combination with the traditional accessory, and the snap-fastener type accessory can be arranged at the target tooth position which needs integral translation, torsion, elevation and torque control; at target sites where only retention or tilt movement is required, conventional attachments may be provided; moreover, since the retention function of the snap-button type attachment is stronger than that of the conventional attachment, the number of the conventional attachments having only the retention function can be appropriately reduced when designing the overall correction scheme.

Further, as shown in fig. 7 and 8, the cross section of the male part 1 adopts an oval or rectangular or trapezoidal or triangular structure, and the cross section of the annular inner wall of the female part 2 is matched with the shape and the size of the cross section of the male part 1. Preferably, when the male part 1 is matched with the female part 2, the overall height of the snap-on type accessory is about 3mm, the height of the male part is about 2mm, the height of the outer wall of the fixing ring of the female part is about 3mm, the length of the snap-on type accessory with the rectangular cross section of the male part 1 is not more than 5mm, the width of the snap-on type accessory is not less than 2mm, and the diameter of the snap-on type accessory with the circular cross section of the male part 1 is not more than 5 mm.

The first embodiment is as follows: the embodiment of the utility model provides a snap-fastener type accessory, as shown in figure 1, the male part 1 adopts a special-shaped column structure, and the first matching structure is a groove which is recessed towards the interior of the male part 1 along the circumferential direction; the second matching structure of the female part 2 is a bulge which is arranged on the annular inner wall of the female part and protrudes inwards along the circumferential direction of the cavity and is matched with the groove of the male part.

Negative part 2 is including solid fixed ring 21, gu fixed ring is including solid fixed ring inner wall 22 and solid fixed ring outer wall 26, gu fixed ring inner wall 22 is equipped with the arch, gu fixed ring outer wall 26 diameter suits with 31 inner walls of die cavity, negative part passes through gu fixed ring outer wall is fixed to be set up in the die cavity, negative part 2 through its protruding block in positive part 1's groove and with positive part fixed connection.

Furthermore, the male component 1 is made of tooth-colored or transparent resin, plastic or ceramic material, and can be made of elastic material or rigid material; the female part 2 is made of a tooth-colored or transparent resin or elastic material such as plastic material. The material has tooth color or transparent color, so that the beauty of the face of a patient is not affected.

Furthermore, the snap-button type accessory is suitable for industrial production. The database can be formed according to the shape and the material of the snap-button type accessory, the size data and the model of the snap-button type accessory can be input during design, and the design, the manufacture and the use of the snap-button type accessory are facilitated.

Example two: the embodiment of the utility model provides a snap-fastener formula annex, the difference with embodiment one lies in, as shown in figure 2, negative part still includes bottom plate 23, gu fixed ring 21 one end is connected perpendicularly bottom plate 23, the bottom plate includes bottom plate internal surface 25 and bottom plate surface 27, negative part passes through gu fixed ring outer wall 26 with bottom plate surface 27 is fixed to be set up in the die cavity to make more firm the installing in the die cavity of negative part, negative part 2 through its protruding block in positive part 1's indent and with positive part fixed connection.

The other technical measures in this embodiment are the same as those in the first embodiment, and are not described again in this embodiment.

Example three: the embodiment of the utility model provides a snap-fastener formula annex, the difference with embodiment one lies in, as shown in fig. 3, 1 middle part of positive part is equipped with draw-in groove 13, the opening diameter D of draw-in groove is less than the diameter D of the biggest department of the inside cross section diameter of draw-in groove 13. The female part 2 further comprises a protrusion 24 arranged on the inner surface 25 of the bottom plate, wherein the shape of the protrusion is matched with that of the clamping groove; when the appliance is worn on the dentition, the female part 2 is fixedly connected with the male part 1 through the protrusion of the female part being clamped in the groove of the male part and the bulge 24 being tightly matched with the clamping groove 13 of the male part 1. The snap-fastener type accessory and the appliance 3 are provided with a double-fixing structure formed by tightly fitting a protrusion with a groove and tightly fitting a protrusion 24 with a clamping groove 13, so that the male part 1 is more closely connected with the appliance 3, the teeth can realize integral movement, parallel movement, torsion, elevation, front tooth torque control and the like can be carried out, and further the tooth correction efficiency is improved.

The other technical measures in this embodiment are the same as those in the first embodiment, and are not described again in this embodiment.

Example four: the embodiment of the utility model provides a snap-fastener type accessory, lie in with embodiment one difference, as shown in fig. 4, in female part 2 located the die cavity 31 of correcting ware 3, female part 2 can be made with die cavity 31 an organic whole, female part 2 through its protruding block in the concave ditch of positive part 1 and with positive part fixed connection, this design has simplified the production and processing of female part and the installation step of snap-fastener type accessory.

The other technical measures in this embodiment are the same as those in the first embodiment, and are not described again in this embodiment.

Example five: the embodiment of the utility model provides a snap-fastener type accessory, as shown in fig. 5 and 7, the positive part comprises a positive part bottom plate 15 and a plurality of matching rods 16, the matching rods are vertically arranged on one side of the positive part bottom plate and are circumferentially arranged along the positive part bottom plate at intervals, the outer circumference of the positive part of the matching rods is provided with a convex edge 17, and the convex edges of the matching rods are positioned on the same ring; the second matching structure of the negative part is an arc-shaped groove which is formed in the annular inner wall of the negative part and is circumferentially concave outwards along the cavity and matched with the convex edge 17 of the positive part, the positive part 1 is fixedly connected with the negative part through the convex edge clamped in the arc-shaped groove of the negative part 2, and the plurality of matching rods are arranged at intervals along the circumferential direction of the bottom plate of the positive part, so that the positive part and the negative part can be conveniently installed in a matched mode.

The other technical measures in this embodiment are the same as those in the first embodiment, and are not described again in this embodiment.

Example six: the embodiment of the utility model provides a snap-fastener type accessory, lie in with the five differences of embodiment, as shown in fig. 6, fig. 7, female part 2 is located in the die cavity 31 of correcting ware 3, and female part 2 can be made with die cavity 31 an organic whole, and positive part 1 through its bead block in female part 2's arc wall and with female part fixed connection, this design has simplified the production and processing of female part and the installation step of snap-fastener type accessory.

The other technical measures in this embodiment are the same as those in the first embodiment, and are not described again in this embodiment.

Example seven: an embodiment of the utility model provides a snap-fastener type orthotic devices, as shown in fig. 1 to 7, including correcting ware 3 and above-mentioned embodiment arbitrary snap-fastener type annex, it corresponds the target tooth position to correct ware 3 the snap-fastener type annex is equipped with die cavity 31, die cavity 31 is used for the holding the snap-fastener type annex. Since the present embodiment includes the snap-button type accessory described in any of the above embodiments, all the above beneficial effects are achieved, and no further description is provided in this embodiment.

The embodiment of the utility model provides an operating method of snap-fastener type orthotic devices, snap-fastener type annex and traditional annex generally jointly use in the bracket-free is rescued, when female part 2 and the ware of rescuring were made respectively, as shown in fig. 1 to 3, 5, 7, including following operation process:

step 101, inputting and storing three-dimensional shape data of the male part 1 and the female part 2 of all models of snap-button type accessories in an accessory database of computer aided design and aided manufacturing system software used by the bracket-free correction system.

102, acquiring a first three-dimensional digital model: when the patient is subjected to bracket-free invisible correction, a first three-dimensional digital model of the initial full dentition of the patient is obtained through a scanner.

Step 103, acquiring a second three-dimensional digital model: designing a correction scheme by using computer aided design and auxiliary manufacturing system software, selecting traditional accessories and snap-button accessories from an accessory database according to the correction scheme, wherein the correction scheme comprises the position, the shape and the number of each accessory, determining a second three-dimensional digital model according to the correction scheme, configuring the initial full-dentition digital model of the snap-button accessories and the traditional accessories, and enabling the snap-button accessories to be matched with a male part and a female part.

Step 104, manufacturing a first resin dental model: and printing the second three-dimensional digital model by using a resin material by using a computer aided design and aided manufacturing system to obtain a first resin dental model.

Step 105, manufacturing a first accessory guide plate: and (3) pressing a film on the first resin tooth mold by using a film pressing machine and adopting a transparent plastic film, and cutting to obtain a first accessory guide plate, wherein the first accessory guide plate is provided with cavities of all accessories.

Step 106, intraoral bonding of the male part of the snap-on attachment to the conventional attachment: acid etching, moisture insulation, blow drying and coating a treating agent on each target tooth surface of the oral cavity of a patient; placing the matching structure of the snap-fastener type accessory female part 2 and the male part 1 with the same size as the size in the second three-dimensional digital model into the corresponding cavity 31 of the first accessory guide plate, wherein the outer wall of the fixing ring and the outer surface of the bottom plate of the female part 2 are in contact with the corresponding cavity 31; coating a light-cured resin adhesive on the bottom surface 11 of the male part in the first accessory guide plate, filling a proper amount of light-cured composite resin into a cavity corresponding to a traditional accessory of the first accessory guide plate, putting the first accessory guide plate into the oral cavity of a patient and positioning the first accessory guide plate on the dentition, and carrying out light curing on the light-cured resin and the light-cured resin adhesive in the cavity of the first accessory guide plate; and after curing, removing the first accessory guide plate and then removing the female part of the snap-button accessory, and then completing bonding of the male part of the snap-button accessory and the traditional accessory.

Step 107, manufacturing a corrector: and manufacturing resin dental casts corresponding to all correction steps in the correction scheme according to the correction scheme, wherein all snap-button type accessories and traditional accessories are configured on each resin dental cast, and all the snap-button type accessories are matched structures of the male part and the female part. On each resin cast, an appliance was laminated in a conventional manner.

Step 108, bonding the female part 1: the female part corresponding to the male part is adhered to the corresponding cavity 31 of all the appliances 3 through the outer wall of the fixing ring and the outer surface of the bottom plate. The appliance 3 is worn into the dentition, and the female part 2 and the male part 1 of the snap-button type accessory can be clamped by slightly pressing the cavity 31 part corresponding to the snap-button type accessory on the appliance 3, so that the target tooth is fixedly connected with the appliance, and the appliance plays a role in correction.

When the appliance 3 is taken down, the edge of the appliance 3 is slightly pushed to deform, and the snap-fastener type attachment male part 1 and the snap-fastener type attachment female part 2 are separated, so that the appliance 3 can be taken down.

The embodiment of the utility model provides an operating method of snap-fastener type orthotic devices, with the difference of above-mentioned operating method lie in, female part and correction ware are integrative to be made, as shown in fig. 4, fig. 6, including following operation process:

step 201, inputting and storing the three-dimensional shape data of the male part 1 and the female part 2 of all types of button-type accessories in an accessory database of computer aided design and aided manufacturing system software used by the bracket-free correction system.

Step 202, obtaining a third three-dimensional digital model: and when the patient is subjected to bracket-free invisible correction, a third three-dimensional digital model of the initial full dentition of the patient is obtained through the scanner.

Step 203, acquiring a fourth three-dimensional digital model: designing a correction scheme by using computer aided design and auxiliary manufacturing system software, selecting traditional accessories and snap-button accessories from an accessory database according to the correction scheme, wherein the correction scheme comprises the position, the shape and the number of each accessory, determining a fourth three-dimensional digital model according to the correction scheme, and the fourth three-dimensional digital model is an initial full-tooth-column digital model configured with a positive part of the snap-button accessory and the traditional accessories.

Step 204, manufacturing a second resin dental model: and printing the fourth three-dimensional digital model by using a resin material by using a computer aided design and aided manufacturing system to obtain a second resin dental model.

Step 205, manufacturing a second accessory guide plate: and (3) pressing a film on the second resin tooth mold by using a film pressing machine and adopting a transparent plastic film, cutting to obtain a second accessory guide plate, wherein the second accessory guide plate is provided with cavities 31 of all accessories, and the female part is integrally formed in the cavity corresponding to the snap-fastener type accessory.

Step 206, the male part of the snap-on attachment is bonded intraorally to the conventional attachment: acid etching, moisture insulation, blow drying and coating a treating agent on each target tooth surface of each oral cavity of a patient; placing the male part 1 of the snap-fastener type accessory with the same size as the fourth three-dimensional digital model into the corresponding cavity 31 of the second accessory guide plate, wherein the top surface of the male part is in contact with the bottom surface of the corresponding cavity; coating a light-cured resin adhesive on the bottom surface of the male part in the second accessory guide plate, filling a proper amount of light-cured composite resin into a cavity corresponding to the traditional accessory of the second accessory guide plate, putting the second accessory guide plate into the oral cavity of a patient and positioning the second accessory guide plate on the dentition, and carrying out light curing on the light-cured resin and the adhesive in the cavity of the second accessory guide plate; after curing, the second accessory guide plate is removed, and the male part of the snap-on accessory and the conventional accessory are both bonded.

Step 207, manufacturing the appliance: and respectively manufacturing resin dental casts corresponding to all the correction steps in the correction scheme according to the correction scheme, wherein all the snap-button type accessories and the traditional accessories are configured on each resin dental cast, and all the snap-button type accessories are positive parts. And (3) respectively pressing a film on each resin dental model in a traditional mode to form an appliance, wherein a female part corresponding to the male part is integrally formed in a cavity corresponding to a snap-button type accessory of the appliance.

And 208, when the appliance 3 is worn into the dentition, slightly pressing the cavity 31 part corresponding to the snap-button type accessory on the appliance 3 to enable the cavity 2 with the female part to be clamped with the male part 1 on the tooth surface, so that the target tooth is fixedly connected with the appliance and the appliance plays a role in correction.

When the appliance 3 is taken down, the edge of the appliance 3 is slightly pushed to deform the edge, and the cavity is separated from the snap-fastener type accessory male part 1, so that the appliance 3 can be taken down.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. A snap-on accessory, comprising:

the male component comprises a male component outer wall, a male component bottom surface and a male component top surface which are parallel to each other, one end of the male component outer wall is adjacent to the male component bottom surface, the other end of the male component outer wall is adjacent to the male component top surface, the male component outer wall is provided with a first matching structure along the circumferential direction of the male component outer wall, the male component is bonded to the labial-buccal surface or the lingual surface of a target tooth through the male component bottom surface, and the male component is arranged corresponding to a cavity of the appliance;

the female part is fixedly arranged in a cavity of the appliance and provided with an annular inner wall for matching with the male part, and the annular inner wall is provided with a second matching structure which is matched with the first matching structure along the circumferential direction of the cavity;

when the appliance is worn on the dentition, the female part is clamped with the first matching structure of the male part through the second matching structure of the female part so as to be fixedly connected with the male part.

2. Snap-on attachment according to claim 1, characterized in that the male part has an oval or rectangular or trapezoidal or triangular cross-section.

3. The snap-on attachment of claim 1, wherein said male part is of a profiled post configuration, and said first mating formation is a groove recessed inwardly along the circumference of said male part;

the second matching structure of the female part is a bulge which is arranged on the annular inner wall of the female part, protrudes inwards along the circumferential direction of the cavity and is matched with the groove of the male part.

4. The snap-fastener attachment according to claim 3, wherein the female part comprises a fixing ring, the fixing ring comprises a fixing ring inner wall and a fixing ring outer wall, the fixing ring inner wall is provided with the protrusion, the fixing ring outer wall has a diameter corresponding to the inner wall of the cavity, and the female part is fixedly arranged in the cavity through the fixing ring outer wall.

5. The snap-on attachment of claim 4, wherein the female part further comprises a bottom plate, one end of the retaining ring is vertically connected to the bottom plate, the bottom plate comprises a bottom plate inner surface and a bottom plate outer surface, and the female part is fixedly disposed in the cavity by the retaining ring outer wall and the bottom plate outer surface.

6. The snap-on attachment according to claim 1, wherein said male part is made of a dental or transparent resin or plastic or ceramic material and said female part is made of a dental or transparent resin or plastic material.

7. The snap-on attachment according to claim 5, wherein a snap groove is provided in the middle of the male part, the diameter D of the opening of the snap groove being smaller than the diameter D of the largest diameter of the inner cross-section of the snap groove;

the female part also comprises a convex part which is arranged on the inner surface of the bottom plate, and the shape of the convex part is matched with that of the clamping groove;

when the orthodontic appliance is worn on the dentition, the female part is fixedly connected with the male part through the protrusion of the female part being clamped in the groove of the male part and the bulge being tightly matched with the clamping groove of the male part.

8. The snap-on attachment of claim 1, wherein said male member includes a male member base plate and a plurality of engagement bars vertically disposed on one side of said male member base plate and circumferentially spaced along said male member base plate, said male member outer circumferential side of said engagement bars being provided with a plurality of ridges, said plurality of ridges of said engagement bars being located on the same circle;

the second matching structure of the female part is an arc-shaped groove which is arranged on the annular inner wall of the female part, is outwards concave along the circumferential direction of the cavity and is matched with the convex edge of the male part.

9. A snap-on orthotic device, comprising:

the snap-on attachment of any one of claims 1 to 8:

and the snap-fastener type accessory corresponding to the target tooth position of the appliance is provided with a cavity for accommodating the snap-fastener type accessory.

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