CN111374788A

CN111374788A - Two-section type bracket-free invisible appliance adduction device

Info

Publication number: CN111374788A
Application number: CN202010323491.9A
Authority: CN
Inventors: 李伯休
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-07-07

Abstract

The invention discloses an adduction device of a two-section bracket-free invisible appliance. Comprises a front tooth shell and a back tooth shell, wherein the front tooth shell and the back tooth shell are connected with a traction rubber ring through a traction fixing device; the anterior tooth shell comprises an anterior tooth wrapping section and adduction wings, and the left side and the right side of the anterior tooth wrapping section respectively extend towards the posterior tooth direction to form the adduction wings; the posterior teeth shell comprises two posterior teeth wrapping sections and a palatal vault section, the palatal vault section is connected between the left posterior teeth wrapping section and the right posterior teeth wrapping section, and the two posterior teeth wrapping sections form a fixed wing after extending towards the gum direction close to one side of a buccal surface. The invention adopts a two-section design in the invisible appliance for the first time, closes the gap by using a sliding method, has a fast tooth moving process and is convenient to control and adjust.

Description

Two-section type bracket-free invisible appliance adduction device

Technical Field

The invention relates to the field of tooth orthodontics, in particular to an adduction device of a two-section bracket-free invisible appliance.

Background

The bracket-free invisible appliance mainly utilizes the friction force between the diaphragm and the teeth to conduct the force value, thereby achieving the effect of moving the teeth. Typically, attachments designed on the teeth provide additional torque to move the teeth to a desired target. However, in the case of orthodontic extraction, if the anterior tooth zone is moved too far, the anterior teeth are often inclined inward, the posterior teeth are inclined toward the middle, and the bicuspid zone is opened to the jaw.

For the tooth extraction case, the orthodontic process is mainly divided into three parts of aligning, gap closing and fine adjustment. During the gap closing process, the number of steps in the stage is increased due to the limitation of the moving distance of the bracket-free invisible appliance in each step, so that the processing cost of the appliance in the whole orthodontic stage is increased.

The current adduction of bracket-free invisible orthotics is similar to the closed curve, and extra torque needs to be provided for the anterior and posterior tooth sections to prevent the arch effect, which is just the weakness of bracket-free invisible orthotics. Therefore, the bracket-free invisible correction has no great advantage for the tooth extraction cases at present.

Therefore, in the bracket-free invisible correction, a corrector which can eliminate the arch effect and close the tooth extraction gap by adopting a sliding method is needed, so that the processing cost is reduced and the correction efficiency is improved.

Disclosure of Invention

In order to solve the problems in the background art, the invention provides an adduction device of a two-section type bracket-free invisible appliance for closing an extraction gap by adopting a sliding method. The gap is closed using a sliding method instead of closing the gap. The guiding groove is used for controlling the anterior dental segment, the form of the posterior dental segment is controlled at the same time, and the force value which is automatically drawn by the patient is utilized to perform the adduction of the anterior dental segment.

The technical scheme adopted by the invention is as follows:

the invention comprises an anterior shell and a posterior shell, wherein the anterior shell and the posterior shell are connected with a traction rubber band through a traction retention device; the anterior tooth shell comprises an anterior tooth wrapping section and adduction wings, and the left side and the right side of the anterior tooth wrapping section respectively extend towards the posterior tooth direction to form the adduction wings; the posterior teeth shell comprises two posterior teeth wrapping sections and a palatal vault section, the palatal vault section is connected between the left posterior teeth wrapping section and the right posterior teeth wrapping section, and the two posterior teeth wrapping sections form a fixed wing after extending towards the gum direction close to one side of a buccal surface.

The incision is formed in the two sides of the edge of the anterior tooth wrapping section through cutting, the incisions on the two sides are located at the position, close to the gum on one side of the labial surface, of the incisions on the two sides are opposite in direction and face towards the direction of the posterior teeth.

The front tooth wrapping sections are used for wrapping the front teeth and are matched with the shapes of the front teeth, the two rear tooth wrapping sections are respectively used for wrapping the rear teeth on two sides of the oral cavity and are matched with the shapes of the rear teeth, and the tooth extraction gap is located between the front tooth wrapping sections and the rear tooth wrapping sections.

The adduction wings cover the outer side surfaces of the rear tooth shell fixing wings, the adduction wings are limited by the traction fixing device, the shape of the adduction wings is matched with the buccal surfaces of the rear teeth, and the end parts of the adduction wings extend to the second molar.

The middle part of one side of the adduction wing close to the cheek surface is provided with a strip-shaped guide groove which penetrates through the front and the back, and the guide groove is positioned in the middle part of the adduction wing and is arranged along the extension direction of the adduction wing. The guide groove is used for providing a guide direction for the adduction of the anterior tooth shell.

The traction fixing devices are arranged on the rear tooth shell fixing wings, and the number of the traction fixing devices is one or more; the traction fixing device adopts a tongue side buckle, a rivet or an accessory; one end of the traction fixing device is exposed out of the outer side surface of the adduction wing, and the other end of the traction fixing device is arranged on the fixed wing after passing through the guide groove of the adduction wing; the traction fixing device is partially embedded in the guide groove.

One end of the traction rubber ring hooks the cut of the anterior teeth wrapping section, the other end of the traction rubber ring is sleeved on the traction fixing device, and traction force for the adduction of the anterior teeth shell is provided through the traction rubber ring.

The palatine fornix segment spans the palate, in an arched arrangement, for stabilizing the posterior dental segment morphology.

The invention has the beneficial effects that:

1) in the adduction process, the anterior teeth and the posterior teeth move integrally, the process is beautiful, and the arch effect is reduced.

2) The invisible appliance adopts a two-section design for the first time, the gap is closed by using a sliding method, the tooth moving process is fast, and the control and the adjustment are convenient.

3) The sliding method provided by the invention is adopted in the gap closing stage, so that only one pair of correctors is needed in the whole adduction stage (about 1 year), the number of the correctors in the stage is greatly reduced, and the processing cost is greatly saved. In this case, however, the membrane of the brace should be made of a harder material.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a bottom view of the present invention.

FIG. 4 is a front view of the shell of the anterior teeth of the present invention.

FIG. 5 is a side view of the shell of the anterior teeth of the present invention.

FIG. 6 is a side view of the posterior shell of the present invention.

FIG. 7 is a front view of the shell of the posterior teeth of the present invention.

In the figure: the anterior teeth traction device comprises an anterior teeth wrapping section 1, a posterior teeth shell 2, a posterior teeth wrapping section 3, an adduction wing 4, a fixed wing 5, a traction rubber ring 6, a guide groove 7, a palatal vault section 8, an incision 9 and a traction fixing device 10.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1 and 2, an adduction device of a bracket-free invisible appliance for orthodontics according to the present invention includes an anterior shell 1 and a posterior shell 2. The anterior shell 1 comprises an anterior wrapping section 1, an adduction wing 4 and a precision cutting part, wherein a guide groove 7 is formed in the middle of the outer side surface of the adduction wing part. The posterior teeth shell 2 comprises two posterior teeth wrapping sections 3 and a palatal vault section 8, one side of each posterior teeth wrapping section 3, which is close to a buccal surface, extends towards a gum direction to form a fixed wing 5, and the fixed wing 5 is provided with a traction and retention device 10. The traction fixing device 10 is matched with the guide groove 7 of the adduction wing to limit the moving mode of the front tooth shell 1. The distraction fixture 10 and the precision cutting portion are forced using a distraction rubber band to provide adduction of the anterior dental zone segment.

As shown in fig. 1, the precision cutting parts are formed by cutting on both sides of the edge of the anterior teeth-covered section 1, and the cutting directions of the cutting parts on both sides are opposite and both are directed toward the posterior teeth.

As shown in fig. 4, the left and right sides of the anterior teeth wrapping segment 1 extend in the posterior direction to form adduction wings 4.

As shown in fig. 5, the guiding groove 7 is provided in the middle of the adduction wing 4 and penetrates forward and backward, and the arch effect generated at the adduction stage of the teeth can be greatly eliminated by designing the guiding groove.

As shown in fig. 6, the traction retention device 10 is arranged on the fixed wing 5 of the posterior shell 2, and the number is one or more; the distraction fixation device 10 employs lingual tabs, rivets or attachments.

As shown in fig. 3 and 7, a palatal dome section 8 is connected between the two posterior teeth wrapping sections 3, and the palatal dome section 8 is designed to play a role of a transverse palatal bar, so that the stability of the shape of the posterior teeth sections is improved.

Example (b):

as shown in fig. 1, the tooth extraction gap is located at the first premolar on the left and right sides, the anterior teeth wrapped by the anterior tooth wrapping section 1 are incisors and canine teeth, the two posterior tooth wrapping sections 3 are respectively used for wrapping the posterior teeth on the two sides of the oral cavity, and the wrapped posterior teeth are second premolar, first molar and second molar.

The back tooth shell 2 is sleeved on the back teeth on two sides of a patient, the front tooth wrapping section 1 of the front tooth shell 1 is nested at the front teeth of the patient, and the adduction wings on two sides of the front tooth shell 1 are attached to the fixed wings of the back tooth wrapping section 3. The current embodiment adopts the mode that tongue side lock inlays in the guiding groove to realize the combination of adduction wing and stationary vane, also can adopt the form that spike or annex inlay in the guiding groove, according to the combination mode of adduction wing and stationary vane, the patient can take out by stage, also can take out anterior teeth back tooth section wholly.

The lingual buttons on the same side are connected with the incision through a traction rubber ring, the traction rubber ring provides traction force during the wearing of the tooth socket by a patient, the guide groove is used as the direction for introducing the anterior tooth segment, the shape of the posterior tooth segment is controlled through the palatal fornix segment 8, and the anterior tooth segment is introduced by the force value automatically drawn by the patient.

In specific implementation, the structures of the anterior tooth wrapping section 1 and the posterior tooth wrapping section 3 can be adjusted according to the tooth extraction condition of a patient, so that the tooth extraction gap is positioned between the anterior tooth wrapping section 1 and the posterior tooth wrapping section 3; if the tooth extraction gap is only positioned at the left cuspid, the front teeth wrapped by the front tooth wrapping section 1 comprise left incisors, right incisors and right cuspids, and the rear teeth wrapped by the rear tooth wrapping sections 3 on the left side and the right side are molars and premolars.

Claims

1. The adduction device of the two-section bracket-free invisible appliance is characterized by comprising an anterior tooth shell (1) and a posterior tooth shell (2), wherein the anterior tooth shell (1) and the posterior tooth shell (2) are connected with a traction rubber ring (6) through a traction retention device (10);

the anterior shell (1) comprises an anterior wrapping section (1) and adduction wings (4), wherein the left side and the right side of the anterior wrapping section (1) extend towards the posterior direction to form the adduction wings (4) respectively;

the posterior teeth shell (2) comprises two posterior teeth wrapping sections (3) and a palatal vault section (8), the palatal vault section (8) is connected between the left posterior teeth wrapping section and the right posterior teeth wrapping section (3), and the two posterior teeth wrapping sections (3) form a fixed wing (5) after extending towards the gum direction close to one side of a buccal surface.

2. The adduction device of the two-stage bracket-free invisible appliance of claim 1, wherein the two sides of the edge of the anterior wrapping section (1) are cut to form notches (9), the notches (9) are positioned at the gum near one side of the labial surface, and the notches (9) are opposite in direction and face the direction of the posterior teeth.

3. The adduction device of the two-stage bracket-free invisible appliance according to claim 1, wherein the anterior tooth wrapping section (1) is used for wrapping the anterior teeth and is matched with the shape of the anterior teeth, the two posterior tooth wrapping sections (3) are respectively used for wrapping the posterior teeth on two sides of the oral cavity and is matched with the shape of the posterior teeth, and the tooth extraction gap is located between the anterior tooth wrapping section (1) and the posterior tooth wrapping section (3).

4. The adduction device of the two-stage bracket-free invisible appliance according to claim 1, characterized in that the adduction wings (4) are covered on the outer side surfaces of the fixed wings (5) of the posterior tooth shell (2), the limit of the adduction wings (4) is realized by a traction retention device (10), the adduction wings (4) are matched with the buccal surface of the posterior teeth in shape, and the end parts of the adduction wings extend to the second molar.

5. The adduction device of the two-stage bracket-free invisible appliance according to claim 1, characterized in that the middle of the adduction wing (4) near the cheek surface is provided with a strip-shaped guide groove (7) penetrating forward and backward, and the guide groove (7) is arranged along the extending direction of the adduction wing (4).

6. The adduction device of the two-stage bracket-free invisible appliance according to the claim 4, characterized in that the traction retention devices (10) are arranged on the fixed wings (5) of the rear tooth shell (2), and the number of the traction retention devices is one or more; the traction fixing device (10) adopts a tongue side buckle, a rivet or an accessory; one end of the traction fixing device (10) is exposed out of the outer side surface of the inner contraction wing (4), and the other end of the traction fixing device passes through the guide groove (7) of the inner contraction wing (4) and then is arranged on the fixed wing (5).

7. The adduction device of the two-stage bracket-free invisible appliance of claim 6, characterized in that one end of the traction rubber ring (6) hooks the incision (9) of the anterior teeth wrapping section (1), the other end is sleeved on the traction fixing device (10), and the traction force for adduction of the anterior teeth shell (1) is provided by the traction rubber ring (6).

8. The adduction device of a two-stage bracket-free invisible orthosis of claim 1, wherein the palatal dome segment (8) spans the palate in an arch shape.