CN216060808U

CN216060808U - Invisible bracket-free appliance

Info

Publication number: CN216060808U
Application number: CN202121853721.9U
Authority: CN
Inventors: 苏文海
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-03-18
Anticipated expiration: 2031-08-10

Abstract

The utility model relates to a bracket-free invisible appliance, which belongs to the technical field of orthodontic appliances in oral medicine and comprises an appliance body, wherein a tongue side non-undercut area of the appliance body is provided with continuous protruding ridges parallel to a jaw plane, the protruding ridges are of a hollow structure, and one ends of the protruding ridges, which are connected with the appliance body, extend to the teeth to be abutted against the teeth. When the appliance is rescued in the preparation, add fence column structure on the tooth jaw model that is used for the 3D of preparation to rescure the ware body and print, the ware is rescued according to the tooth jaw model moulding-die of printing. The utility model can solve the problems that the existing bracket-free invisible appliance is easy to deform which is difficult to predict in the prior art, so that the correction capability is reduced, and the correction efficiency of the existing bracket-free invisible appliance is lower.

Description

Invisible bracket-free appliance

Technical Field

The utility model relates to the technical field of orthodontic appliances in stomatology, in particular to a bracket-free invisible appliance.

Background

The bracket-free invisible orthodontic device is a transparent elastic material movable orthodontic device designed and manufactured by computer assistance, is a sequence of continuous orthodontic devices, and achieves the aim of orthodontic by continuous small-range tooth movement. Only some of the teeth may be moved in different stages while the other teeth act as anchorage, thereby completing the straightening of the teeth.

The bracket-free invisible appliance achieves the aim of correcting the position of teeth by applying pressure to the surface of the teeth through elastic materials. Because the forces act in concert, the appliance exerts pressure on the tooth surfaces while the teeth exert opposing forces on the appliance. The inner cavity of the appliance is in surface contact with the crown 51 of the tooth and the tooth will develop a plurality of different directional and different magnitude reaction forces against the appliance. The existing appliance is made of elastic materials, local deformation and overall deformation can occur under the condition that a plurality of reaction forces are continuously applied to teeth, wherein the local deformation refers to the deformation of the contact position of the inner cavity of the appliance and the teeth, and the overall deformation refers to the deformation along the direction of dental arches. After the appliance deforms, the contact position and the force application direction of the appliance and teeth are changed difficultly, and the correction capability is reduced or the correction effect is lost. The correcting force applied by the buccal side pushes the tooth body to the lingual side while the corrector is worn, so that the contact position of the lingual side and the tooth body is changed difficultly to be predicted, and the pressure direction and the pressure of the corrector on the lingual side are changed difficultly to be predicted. Because the buccal side is greater than the lingual side under the stress of the tooth body, the tooth body can generate tongue inclination, and the originally applied force of the appliance on the buccal side is weakened. Furthermore, the movement of the teeth after being stressed is accompanied by various complicated and unpredictable movements such as rotation, elongation and depression, and the magnitude and direction of the applied force, especially the direction, are changed. The force application radius of the bracket-free invisible appliance is small, the deformation amplitude is small and is mostly smaller than 0.25mm, so that the tooth position and the appliance position are slightly changed, and the force application size and direction of the appliance are greatly influenced. In terms of the overall structure of the dental arch, the appliance cannot be deformed too much in consideration of the difficulty in wearing the appliance, so that the appliance has a weak effect on changing the form of the dental arch. In the vertical direction, when the anterior teeth need to be inwards received, the appliance in the anterior tooth zone needs to be excessively pressed down and rotated, the position deformation of the premolar can be increased, and the sleeve-removing phenomenon is easy to occur if the height of the dental crown of the premolar is not large. And too large deformation can lead to small deformation of each part of the appliance, and the deformation is difficult to predict, thereby bringing difficulty to computer design.

When the existing appliance is used for correcting the tooth form, the inner cavity of the appliance is in surface contact with the tooth surface, the pressure formed by the surface-to-surface contact is always perpendicular to the contact surface, and because the contact surface is an arc surface, a plurality of pressures with different angles and different sizes are formed at each position of the contact surface, wherein one part of the pressures can promote the tooth to move in the expected direction and is called as effective force, and the other part of the pressures can not promote the tooth to move in the expected direction and is called as ineffective force. The pressure provided by the orthosis is limited, resulting in a substantial reduction in effective force due to the ineffectiveness. Inefficacy disturbs effective power, prevents that the tooth from moving toward the direction of expectation, further reduces and corrects efficiency, and simultaneously, inefficacy's reaction force can increase the local deformation and the whole deformation of correcting the ware, further reduces and corrects the ability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a bracket-free invisible appliance, and solves the problems that the existing bracket-free invisible appliance is easy to deform, which is difficult to predict in the prior art, so that the correction capability is reduced and the correction efficiency of the existing bracket-free invisible appliance is low.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a ware is rescued in stealthy of no support groove, is including correcting the ware body, the tongue side of correcting the ware body is not fallen the concave zone and is set up the continuous protruding spine parallel with the jaw plane, protruding spine is hollow structure, protruding spine and the one end of correcting the ware body coupling extend to the tooth with the tooth butt.

Furthermore, the inner surface of the appliance body is provided with a plurality of convex points which are abutted against teeth.

Furthermore, the salient points are connected into a plurality of arc lines, and the number of the salient points on each arc line is 2-4.

Furthermore, the appliance also comprises a stress application clamp which is an elastic element and comprises a plurality of arc-shaped pieces used for being clamped in the extending gap of the appliance body.

Further, the tip of arc sets up the pointed end towards one side of tooth, the ware body is being set up with the sunken of pointed end matching in the position that corresponds with the pointed end to the rescue ware body, pointed end and the sunken block that corresponds.

Furthermore, the arc-shaped pieces are arranged in a plurality of numbers, the stress application clamp further comprises connecting strips which are connected with any adjacent or spaced arc-shaped pieces and located at the end parts of the same sides of the teeth, and the connecting strips are symmetrically distributed on the cheek-tongue sides of the teeth.

The utility model also provides a manufacturing method of the bracket-free invisible appliance, when the appliance is manufactured, the fence-shaped structure is additionally arranged on the 3D-printed dental model for manufacturing the appliance body, and the appliance is manufactured by pressing the printed dental model.

The utility model has the following beneficial effects:

the tongue side non-undercut area of the appliance body of the bracket-free invisible appliance is provided with continuous protruding ridges parallel to the jaw plane, the protruding ridges are of hollow structures, and the inner side surfaces of the protruding ridges are inwards recessed to abut against teeth. Protruding ridge makes the lingual side cross-section of correcting the ware become "T" type by original "a" style of calligraphy, has increased the overall structure intensity of correcting the ware body especially the structural strength of lingual side, has restrained the overall deformation and the local deformation of correcting the ware body, forms the opposition with the thrust point or the annex of buccal side, makes its resultant force direction and size all more stable, can effectively maintain the stable dental arch form of correcting the ware body, fine change or the width that maintains the dental arch.

The inner surface of the appliance body of the bracket-free invisible appliance is provided with a plurality of salient points. The convex points change the surface contact of the inner cavity of the appliance body and the tooth surface into point contact. Point contacts have the following advantages: one of them, the bump can be according to the accurate setting of patient's particular case, guarantees to rescue the ware body and to tooth surface pressure direction optimization, increases the available power, reduces inefficacy, and the big or small greatly increased of available power improves the efficiency of correcting of ware body. Secondly, the bump makes most regional not with the tooth face contact of correcting the ware body internal surface, has reduced the emergence of correcting the unnecessary deformation of ware, and further the inefficacy that has significantly reduced lets to correct the ware body have bigger deformation space, can provide bigger more lasting correction power.

Drawings

FIG. 1 is a top view of a lower tooth after wearing the bracket-less invisible appliance of the present invention (force application clip not shown in the figures);

FIG. 2 is a perspective view of a single upper posterior tooth after wearing the bracket-free invisible appliance of the utility model (no stressing clamp shown in the figure);

FIG. 3 is a perspective view of a plurality of lower posterior teeth after wearing the bracket-less invisible appliance of the present invention;

FIG. 4 is a top view of a plurality of lower posterior teeth after wearing the bracket-less invisible appliance of the present invention;

FIG. 5 is a perspective view of the relative positions of two arcs formed by two groups of convex points on a single upper posterior tooth after wearing the bracket-free invisible appliance of the utility model;

FIG. 6 is a cross-sectional view of an arcuate member;

fig. 7 is a schematic view of a state after a fence-like structure is added to a 3D-printed dental model for manufacturing the appliance body.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings.

As shown in fig. 1-7, a bracket-free invisible appliance comprises an appliance body 1, a tongue side non-undercut region of the appliance body 1 is provided with a continuous protruding ridge 2 parallel to a jaw plane, the protruding ridge 2 is a hollow structure, and one end of the protruding ridge 2 connected with the appliance body 1 extends to a tooth 5 to abut against the tooth 5.

The tongue side non-undercut area of the appliance body of the bracket-free invisible appliance is provided with the continuous protruding ridge parallel to the jaw plane, the protruding ridge increases the overall structural strength of the appliance body, particularly the structural strength of the tongue side, inhibits the overall deformation and the local deformation of the appliance body, and forms countermeasures with the stressing point or the accessory on the buccal side, so that the direction and the size of the resultant force are more stable, the stable dental arch form of the appliance body can be effectively maintained, and the width of the dental arch can be well changed or maintained.

The protruding ridge plays a role during adduction of the anterior teeth: the protruding ridge is arranged at one third of the incisional position of the anterior teeth and forms a root control force couple with the force application point at the root of the labial side. When the anterior teeth rotate towards the lingual side during retraction, the incisal end of the anterior teeth is stretched towards the occlusal surface, the occlusion curve of the upper jaw is sunken towards the tooth root, and the roller coaster effect is formed. This requires a force to depress the anterior teeth. The protruding ridge enhances the vertical structural strength of the lingual side and provides a greater force to depress the anterior teeth during adduction. Thereby suppressing the occurrence of the roller coaster effect.

The protruding ridges are arranged on the tongue side of the appliance and are distributed in a fan shape, so that the control force of the appliance in the horizontal direction is enhanced. The width of the dental arch can be well changed and maintained. Locally, when the buccolingual slope of the orthodontic distal teeth is inclined, a more effective orthodontic force is provided to erect the teeth.

The inner surface of the appliance body 1 is provided with a plurality of salient points 31 which are abutted against the teeth 5.

The inner surface of the appliance body is provided with a plurality of contact areas at each tooth position, each contact area comprises an axis angle area, a tongue side undercut area and a tongue side protruding ridge area, and the specific setting position of the salient points is determined according to the specific condition of a patient. Wherein the inboard and the tooth body one-tenth arc line type contact in the outstanding spine district of tongue side, according to patient's particular case, a plurality of bumps can be add to axle angle district and tongue side undercut district, and a plurality of arcs are even into to a plurality of bumps, and the arc in the outstanding spine district of tongue side, axle angle district and tongue side undercut district forms jointly to close to be close to and closes to form to do all can to rescue the tooth. .

After the structural strength greatly increased of ware is rescued to the lingual side, the ware is rescued and can select to follow thinner diaphragm, can increase the elasticity limit of lip buccal side and the laminating degree of holistic ware of rescuring, reduces the degree of difficulty of rescuring the intraoral degree of wearing into of ware and the degree of difficulty of taking out, can scratch protruding spine when taking out and take out. When the anterior teeth are adducted, the protruding ridge passes through one third of the incisional position of the anterior teeth and can form an effective root control force couple with the contact point of the cheek side and the position close to the neck.

The salient points 31 are connected into a plurality of arc lines, and the number of the salient points 31 on each arc line is 2-4.

The number of the arc lines is one or more, and the number of the salient points on each arc line is set according to actual needs.

Experimental data show that the best effect can be obtained when the number of the salient points is 2-4.

The appliance further comprises a stress application clamp 4, the stress application clamp 4 is an elastic element, and the stress application clamp 4 comprises a plurality of arc-shaped pieces 42 which are used for being clamped in the extending gap of the appliance body 1.

The tip 421 is arranged at one side of the end of the arc-shaped piece 42 facing the teeth 5, the appliance body 1 is provided with a recess matched with the tip 421 at the position corresponding to the tip 421, and the tip 421 is clamped with the corresponding recess.

As shown in fig. 6, the tip 421 of the arc 42 enters a predetermined recess of the appliance body 1 to provide retention of the force clip.

The stressing clamp 4 is manufactured by personalized 3D printing. After the appliance is worn, the stressing clamp is worn again to increase the clamping force in the buccolingual direction. These clamping forces provide more of the corrective force. Greater anchorage is provided when adducting anterior teeth, preventing mesial tipping of posterior teeth.

Through abduction clearance buccal surface, occlusal surface and lingual surface, wear into again behind the correction ware body and wear into the afterburning clamp, the afterburning clamp has increased the time of correcting the ware body to the centre gripping dynamics and the dynamics of tooth and keep, has further improved the ability of correcting and correcting of correcting the ware body and has corrected the effect.

The arc-shaped pieces 42 are arranged in a plurality, the stressing clamp 4 further comprises a connecting strip 41 which is connected with any adjacent or spaced arc-shaped pieces 42 and is positioned at the end part of the tooth 5 on the same side, and the connecting strip 41 is symmetrically distributed on the buccolingual side of the tooth 5.

The connecting strips 41 further increase the force strength of the force clip.

When the ware is rescued in the preparation, add fence column structure 7 on the tooth jaw model 6 that is used for the preparation to rescure the 3D printing of ware body 1, according to the tooth jaw model moulding-die of printing make and rescure the ware, when taking off and rescuring the ware, this thin and weak fence column structure can break off to do not influence its dislocation.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only for illustrating the principle of the present invention, but various changes and modifications may be made within the scope of the present invention as claimed without departing from the spirit and scope of the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The bracket-free invisible appliance is characterized by comprising an appliance body (1), wherein a continuous protruding ridge (2) parallel to a jaw plane is arranged in a tongue side non-undercut area of the appliance body (1), the protruding ridge (2) is of a hollow structure, and one end, connected with the appliance body (1), of the protruding ridge (2) extends to abut against teeth (5) from the teeth (5).

2. The bracket-free invisible appliance of claim 1, wherein the inner surface of the appliance body (1) is provided with a plurality of convex points (31) which are abutted with teeth (5).

3. The bracket-free invisible appliance of claim 2, wherein the salient points (31) are connected into a plurality of arcs, and the number of the salient points (31) on each arc is 2-4.

4. The bracket-free invisible appliance of claim 1, further comprising a force application clamp (4), wherein the force application clamp (4) is an elastic element, and the force application clamp (4) comprises a plurality of arc-shaped pieces (42) for being clamped in the flared gap of the appliance body (1).

5. The bracket-free invisible appliance of claim 4, wherein the end of the arc-shaped piece (42) is provided with a tip (421) towards one side of the tooth (5), the appliance body (1) is provided with a recess matched with the tip (421) at the position corresponding to the tip (421), and the tip (421) is clamped with the corresponding recess.

6. The bracket-free invisible appliance of claim 4, wherein the arc-shaped pieces (42) are arranged in a plurality, the stressing clamp (4) further comprises a connecting strip (41) which is connected with any adjacent or spaced arc-shaped pieces (42) and is positioned at the end part of the tooth (5) on the same side, and the connecting strip (41) is symmetrically distributed on the buccolingual side of the tooth (5).

7. A method for manufacturing the bracket-free invisible appliance, as claimed in any one of claims 1 to 6, characterized in that when manufacturing the appliance, a fence-like structure (7) is added on a 3D-printed dental model (6) for manufacturing the appliance body (1), and the appliance is manufactured by compression molding according to the printed dental model.