CN107913112B - Twist the dental appliance - Google Patents

Abstract

The present invention provides a torsion tooth orthodontic appliance, comprising a retention archwire, a first end bracket, a torsion bracket, a second end bracket and a torsion tooth spring sheet, wherein the torsion bracket adopts a non-self-locking bracket, the torsion bracket is bonded to the tooth to be torsioned, a torsion tooth spring sheet is arranged in the groove of the torsion bracket, the groove of the torsion bracket also passes through the retention archwire, the torsion tooth spring sheet is arranged between the groove of the torsion bracket and the retention archwire, the torsion tooth spring sheet adopts a torsion tooth spring sheet specially used for non-self-locking brackets, the torsion tooth spring sheet specially used for non-self-locking brackets comprises a transverse sheet and a longitudinal sheet, the middle part of the transverse sheet is connected to the middle part of the longitudinal sheet, and the transverse sheet and the longitudinal sheet form a cross-shaped structure. The torsion tooth orthodontic appliance forms a spring part by bending and double-folding, the retention archwire is inserted into the groove, and it is fixed by a ligature wire or a ligature ring, and the torsion dislocation of the tooth is corrected by the resilience of the material, the tooth is twisted, and the rotational movement of the tooth is completed.

Description

Twist the dental appliance

Technical Field

The invention relates to a twisting dental appliance.

Background technique

Dental braces are widely used in clinics because of their three-dimensional control effect on tooth movement. The basic principle is to transmit the correction force such as the elastic force of the steel wire and the traction force of the rubber band to the teeth through the brackets bonded to the teeth (see Figure 1), so as to move the teeth to the ideal position. The misalignment of teeth includes mesiodistal, labiolingual, torsion, high position, low position, tilt, etc. Therefore, the tooth movement methods required for correction of teeth include mesiodistal, labiolingual, torsion, vertical, root torque control, etc. The commercialized non-self-locking bracket method meets the needs of clinical tooth correction and needs to be used with a traction hook, which serves as the traction point for elastic rubber bands. At present, there are two main structures of traction hooks. One is to use ligature wires and be made on-site by doctors. In this way, the ligature wires are easy to break and take a long time to use. They are also easy to loosen, rotate, shift, and fall off during use, resulting in poor traction effect. The other is that the bracket has its own traction hook. In this mode, since the traction hook is completely fixed on the bracket, it cannot be adjusted to meet specific needs. In addition, since the built-in traction hook is protruding, it affects the appearance when it is set externally.

Orthodontic fixed correction is achieved by bonding the appliance to the tooth surface, placing the archwire in the groove, and transmitting the correction force to the teeth through the appliance, so that the teeth growing in the alveolar bone move to the normal position. In orthodontic treatment, rotational movement is the most complicated and difficult process of tooth movement. In the process of correcting the malocclusion of twisted teeth, traditional non-self-ligating appliances often bond tongue buckles on the lingual side of the twisted teeth, forming a pair of force couples on the labial and lingual sides, and Z-shaped traction to gradually correct the twisted and misaligned teeth. This method has the following problems:

1. Clinically, when twisting the buccal and lingual bonding brackets, use rubber bands to pull them in opposite directions. First, the lingual bonding bracket feels like a foreign body, which stimulates the lingual mucosa and reduces comfort. The strength of the elastic chain ring decays quickly, and patients have to return for follow-up visits frequently. If the patients fail to return for follow-up visits on time, the efficacy will be affected. The rubber bands are soaked in saliva for a long time, and are subject to various wear and tear during chewing, resulting in uneven strength.

2. When the twisted tooth is twisted at a large angle and is close to the adjacent teeth, it is difficult to bond brackets or tongue buckles clinically, and the operation becomes more difficult.

3. When the twisted teeth are corrected to their normal position, traction treatment is often needed to adjust the occlusal relationship. Since ordinary non-self-ligating brackets do not have built-in traction hooks, traction treatment is often completed clinically by using a homemade round buckle traction hook made of ligature wire. This homemade round buckle traction hook may shift, loosen, rotate, or fall off during use, resulting in poor traction effect and affecting the treatment process. In addition, the placement of the traction hook varies due to operator habits and experience, affecting the traction effect.

The above issues are those that should be considered and addressed during orthodontic treatment.

Summary of the invention

The purpose of the present invention is to provide a directional movable tooth spring sheet specially used for a non-self-locking bracket, so as to solve the problem in the prior art that a traction hook is made on site using a ligature wire, the ligature wire is easy to break, takes a long time, and is easy to loosen, rotate, shift, and fall off during use, resulting in a poor traction effect; the cost of using a self-contained traction hook is high, and the traction hook is completely fixed on the bracket, which cannot be adjusted according to specific needs.

The purpose of the present invention is to provide a twisted tooth spring sheet and a twisted tooth orthodontic appliance specially used for non-self-locking brackets, so as to solve the problems existing in the prior art that when the brackets are bonded to the buccal and lingual sides of the twisted teeth, a rubber band is used to pull in opposite directions. First, the foreign body sensation of the lingually bonded bracket is relatively strong, which stimulates the lingual mucosa and reduces the comfort level; the strength of the elastic chain ring decays quickly, and the patient has to return for follow-up visits frequently. If the patient fails to return for follow-up visits on time, the efficacy is affected; the rubber band is soaked in saliva for a long time, is subjected to various wear and tear during chewing, and the strength is uneven.

The technical solution of the present invention is:

A directional moving tooth spring sheet specially used for a non-self-ligating bracket comprises a transverse sheet and a longitudinal sheet, wherein the middle part of the transverse sheet is connected to the middle part of the longitudinal sheet, the transverse sheet and the longitudinal sheet form a cross-shaped structure, the cross-shaped structure is adapted to the cross-shaped groove of the non-self-ligating bracket, the transverse sheet is divided into a transverse left half and a transverse right half by the longitudinal sheet, and the longitudinal sheet is divided into a longitudinal upper half and a longitudinal lower half by the transverse sheet.

Furthermore, the non-self-locking bracket-specific directional movable tooth spring piece is fixed in the groove of the bracket by a ligature wire or a ligature ring, the longitudinal piece is arranged on the long axis of the tooth, and one or more ends of the transverse piece and the longitudinal piece are bent to form a traction part.

A torsion tooth spring sheet specially used for a non-self-ligating bracket comprises a transverse sheet and a longitudinal sheet, wherein the middle part of the transverse sheet is connected to the middle part of the longitudinal sheet, the transverse sheet and the longitudinal sheet form a cross-shaped structure, the cross-shaped structure is adapted to the cross-shaped groove of the non-self-ligating bracket, the transverse sheet is divided into a transverse left half and a transverse right half by the longitudinal sheet, the transverse left half is bent and folded in half to form a U-shaped spring portion, the transverse right half is bent and not folded in half to form a bent portion, and the longitudinal sheet is divided into a longitudinal upper half and a longitudinal lower half by the transverse sheet.

Furthermore, the transverse slice and the longitudinal slice are arranged vertically, and the longitudinal slice is arranged on the long axis of the tooth to be twisted.

Further, the lengths of the longitudinal upper half and the longitudinal lower half are respectively smaller than the lengths of the transverse left half and the transverse right half.

Furthermore, the ends of the longitudinal upper half and the longitudinal lower half close to the gum direction are bent at an angle of 90°-100° to form a retention anti-slip portion.

Furthermore, the ends of the longitudinal upper half and the longitudinal lower half close to the jaw direction are bent at an angle of 100°-150° to form a traction portion.

Furthermore, the transverse sheet and the longitudinal sheet are respectively made of medical stainless steel or medical alloy, and the thickness of the transverse sheet and the longitudinal sheet is 0.02-0.03 mm, and the width of the transverse sheet and the longitudinal sheet is 0.3-0.35 mm.

A twisting tooth orthodontic appliance comprises a retaining archwire, a first end bracket, a twisting bracket, a second end bracket and a twisting tooth spring sheet. The twisting bracket adopts a non-self-locking bracket, the twisting bracket is bonded to the tooth to be twisted, a twisting tooth spring sheet is arranged in the groove of the twisting bracket, a retaining archwire is also passed through the groove of the twisting bracket, two ends of the retaining archwire are respectively fixed to the first end bracket and the second end bracket, the twisting tooth spring sheet is arranged between the groove of the twisting bracket and the retaining archwire, the twisting tooth spring sheet adopts the above-mentioned twisting tooth spring sheet specially used for the non-self-locking bracket, the spring part and the bending part of the twisting tooth spring sheet are arranged in sequence along the correction direction of the tooth to be twisted, and the retaining archwire contacts the bending part of the twisting tooth spring sheet.

The beneficial effects of the present invention are:

1. This type of non-self-ligating bracket is specially designed for directional movement of teeth springs. It adopts a cross-shaped structure, which is convenient for clinical use, prevents slipping from the bracket during use, increases retention, and facilitates traction.

Second, this non-self-ligating bracket special directional moving tooth spring piece is placed in the non-self-ligating bracket, and each end is set as a traction part to achieve convenient traction at various angles. It is easy to use and low in cost. It is fixed by a ligature wire or a ligature ring, and is stable when used. It is fixed by the groove of the bracket and will not shift or fall off, which can ensure the traction effect.

3. This type of non-self-locking bracket is specially designed for directional movement of the tooth spring, which is located in the center of the long axis of the tooth. The force passes through the impedance center of the tooth, which plays a highly effective role in correcting the torsion of the tooth and pulling it, eliminating the error caused by the operator's habits and experience.

Fourth, this type of non-self-locking bracket special directional moving tooth spring piece can ensure the full expression of the teeth in the three-dimensional direction. When the size of the arch wire is smaller than the size of the bracket groove, by setting this type of non-self-locking bracket special torsion tooth spring piece, the gap between the arch wire and the bracket groove can be reduced or even eliminated, which can ensure that the arch wire fully contacts the teeth and that the force in the three-dimensional direction acts on the teeth at the optimal position, thereby greatly shortening the correction time and correcting the teeth to the required angle, with better expression effect in the three-dimensional direction, solving the problem that when there is a gap between the existing arch wire and the bracket groove, the arch wire cannot fully contact the tooth surface to act, resulting in too long correction time, unsatisfactory expression effect of the teeth in the three-dimensional direction, and even the inability to achieve three-dimensional data expression.

5. For twisted teeth, this type of non-self-ligating bracket special twisted tooth spring sheet and twisted tooth appliance are formed by bending and double folding the spring part, fixing the arch wire into the slot, and fixing it with a ligature wire or a ligature ring. The resilience of the material is used to correct the twisted dislocation of the teeth, complete the rotational movement of the teeth, and can effectively correct the twisted teeth.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic structural diagram of a non-self-ligating bracket dedicated for directional movement of teeth springs fixed in a groove of the non-self-ligating bracket according to an embodiment of the present invention;

FIG2 is a schematic structural diagram of a tooth spring sheet dedicated to a non-self-ligating bracket according to an embodiment of the present invention;

FIG3 is a schematic structural diagram of a non-self-locking bracket according to an embodiment of the present invention;

4 is a schematic diagram of the structure of a non-self-ligating bracket dedicated to twisting teeth spring sheet according to an embodiment of the present invention;

FIG5 is a schematic diagram of the structure of a twisting dental appliance according to an embodiment of the present invention;

Among them: 1- non-self-ligating bracket, 2- ligating ring, 3- transverse piece, 4- longitudinal piece, 5- traction part, 6- spring part, 7- bending part, 8- retention archwire, 9- torsion bracket, 10- first end bracket, 11- second end bracket, 12- tooth 12 to be twisted.

31-lateral left half 31, 32-lateral right half 32;

41 - longitudinal upper half 41 , 42 - longitudinal lower half 42 .

Detailed ways

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Example

A directional movable tooth spring sheet specially used for a non-self-ligating bracket, as shown in FIGS. 1 , 2 and 3 , comprises a transverse sheet 3 and a longitudinal sheet 4. The middle portion of the transverse sheet 3 is connected to the middle portion of the longitudinal sheet 4. The transverse sheet 3 and the longitudinal sheet 4 form a cross-shaped structure. The cross-shaped structure is adapted to the cross-shaped groove of the non-self-ligating bracket 1. The transverse sheet 3 is divided into a transverse left half 31 and a transverse right half 32 by the longitudinal sheet 4. The longitudinal sheet 4 is divided into a longitudinal upper half 41 and a longitudinal lower half 42 by the transverse sheet 3.

The directional movable tooth spring piece for non-self-locking brackets adopts a cross-shaped structure, which is convenient for clinical use, prevents slipping from the bracket during use, and increases retention. The directional movable tooth spring piece for non-self-locking brackets is fixed in the groove of the bracket by a ligature wire or a ligature ring 2, the longitudinal piece 4 is arranged on the long axis of the tooth, and one or more ends of the transverse piece 3 and the longitudinal piece 4 are bent to form a traction part 5.

This non-self-locking bracket special directional movable tooth spring sheet can be placed in the non-self-locking bracket 1, and each end is set as a traction part 5, so as to realize convenient traction at various angles, meet the needs of traction at various angles, and is convenient to use and disassemble and replace. It is convenient to use and has low cost. It is fixed by the ligature wire or ligature ring 2, is stable when used, and is fixed by the groove of the bracket so that it will not shift or fall off, and the traction effect can be guaranteed.

This type of non-self-ligating bracket is specially designed to directional move the tooth spring piece, which is located in the center of the long axis of the tooth. The force acts through the impedance center of the tooth, eliminating the error caused by the operator's habits and experience.

A torsion tooth spring sheet specially used for a non-self-ligating bracket, as shown in FIG4 , comprises a transverse sheet 3 and a longitudinal sheet 4, the middle portion of the transverse sheet 3 is connected to the middle portion of the longitudinal sheet 4, the transverse sheet 3 and the longitudinal sheet 4 form a cross-shaped structure, the cross-shaped structure is adapted to the cross-shaped groove of the non-self-ligating bracket 1, the transverse sheet 3 is divided into a transverse left half 31 and a transverse right half 32 by the longitudinal sheet 4, the transverse left half 31 is bent and folded in half to form a U-shaped spring portion 6, the transverse right half 32 is bent and not folded in half to form a bent portion 7, and the longitudinal sheet 4 is divided into a longitudinal upper half 41 and a longitudinal lower half 42 by the transverse sheet 3.

This type of non-self-locking bracket special directional moving tooth spring piece can ensure full expression of the teeth in three-dimensional direction. When the size of the arch wire is smaller than the size of the bracket groove, by setting this type of non-self-locking bracket special torsion tooth spring piece, the gap between the arch wire and the bracket groove can be reduced or even eliminated, which can ensure that the arch wire fully contacts the teeth and that the force in the three-dimensional direction acts on the teeth at the optimal position, thereby greatly shortening the correction time and correcting the teeth to the required angle, with better expression effect in three-dimensional direction, solving the problem that when there is a gap between the existing arch wire and the bracket groove, the arch wire cannot fully contact the tooth surface to act, resulting in too long correction time, unsatisfactory expression effect of the teeth in three-dimensional direction, and even failure to achieve three-dimensional direction data expression.

The multi-purpose torsion spring sheet of the embodiment is often used in orthodontic clinics for the treatment of torsion teeth and traction treatment. The invention is simple to manufacture and can be mass-produced according to a certain procedure by using numerical control technology. The multi-purpose torsion spring sheet is located at the center of the long axis of the tooth, and the acting force passes through the impedance center of the tooth, thereby improving the treatment efficiency of malocclusion.

The transverse piece 3 and the longitudinal piece 4 are arranged vertically, and the longitudinal piece 4 is arranged on the long axis of the tooth 12 to be twisted. The position is in the center of the long axis of the tooth, and the force passes through the impedance center of the tooth, eliminating the error caused by the operator's habits and experience.

The ends of the longitudinal upper half 41 and the longitudinal lower half 42 close to the gum direction are bent at an angle of 90°-100° to form a retention and anti-slip portion, which avoids irritation to the oral mucosa, increases comfort, increases retention, and prevents slippage.

When intermaxillary traction or intramaxillary traction is required, the ends of the longitudinal upper half 41 and the longitudinal lower half 42 close to the jaw direction are bent at an angle of 100°-150° to form a traction portion 5. This facilitates the use of hanging traction by the patient and increases the efficacy of intermaxillary traction. By applying forces in different directions, the vertical and mesiodistal directional movement of the teeth is completed.

The embodiment forms a spring portion 6 by bending and double-folding to twist the teeth and complete the root control of the teeth. The teeth are moved forward and backward through the traction portion 5, which has a more integrated movement effect than the traditional traction tooth movement method and avoids the traditional tooth tilt movement. After the twisted teeth are corrected to the normal position, they need to be moved to adjust the occlusal relationship. The operator can bend the gingival side appropriately, that is, slightly bend the end of the longitudinal piece 4 to make a traction hook, and move the teeth forward and backward or vertically, avoiding the need to make or add an external traction hook, thereby improving the efficiency of tooth movement.

The transverse piece 3 and the longitudinal piece 4 are respectively made of medical stainless steel or medical alloy, and the thickness of the transverse piece 3 and the longitudinal piece 4 is 0.02-0.03mm, and the width of the transverse piece 3 and the longitudinal piece 4 is 0.3-0.35mm. The material has a certain strength and is not easy to break, and it is placed in the bracket without affecting the insertion of the archwire into the slot.

The embodiment adopts medical stainless steel material or medical alloy material with a thickness of 0.02-0.03 mm, which has good biocompatibility with the human body, is harmless to the human body and is not easily affected by saliva, etc. In the early stage of treatment, the archwire fits more closely with the groove after entering the groove, and after being firmly ligated, better expression is achieved.

Embodiment: A cross-shaped attachment is made by CNC machine tool technology with a width of 0.3-0.35 mm, a thickness of 0.02-0.03 mm, a left and right diameter approximately equal to the left and right diameter of the bracket groove, and an upper and lower diameter 2 mm higher than the upper and lower diameter of the bracket groove. It matches various traditional non-self-locking bracket grooves and is suitable for each tooth. The cross-shaped traction hook can be bent and cut up and down and left and right according to clinical needs.

A twisting tooth orthodontic appliance, as shown in Figure 5, includes a retaining archwire 8, a first end bracket 10, a twisting bracket 9, a second end bracket 11 and a twisting tooth spring sheet, the twisting bracket 9 adopts a non-self-locking bracket 1, the twisting bracket 9 is bonded to the tooth to be twisted 12, a twisting tooth spring sheet is provided in the groove of the twisting bracket 9, the groove of the twisting bracket 9 also passes through the retaining archwire 8, the two ends of the retaining archwire 8 are respectively fixed to the first end bracket 10 and the second end bracket 11, the twisting tooth spring sheet is arranged between the groove of the twisting bracket 9 and the retaining archwire 8, the twisting tooth spring sheet adopts the above-mentioned non-self-locking bracket special twisting tooth spring sheet, the spring portion 6 and the bending portion 7 of the twisting tooth spring sheet are arranged in sequence along the correction direction of the tooth to be twisted 12, and the retaining archwire 8 is in contact with the bending portion 7 of the twisting tooth spring sheet.

For twisted teeth, this type of non-self-locking bracket special twisted tooth spring sheet and twisted tooth orthodontic appliance is formed by bending and double folding the spring part 6, the retention arch wire 8 is inserted into the groove, and it is fixed with a ligature wire or a ligature ring 2, and the resilience of the material is used to correct the twisted dislocation of the teeth, twist the teeth, and complete the rotational movement of the teeth, which can effectively correct the twisted teeth.

During use, the non-self-locking bracket special torsion tooth spring piece is fixed at the bottom of the bracket groove, and the center of force passes through the impedance center of the tooth body. It plays an efficient role in correcting torsion teeth and traction.

Embodiment In the early stage of treating the twisted teeth, the spring sheet is twisted or double-bent to form a spring, and the operator determines the bending angle according to the degree of the twisted teeth. The bending angle is appropriately adjusted according to the situation at each follow-up visit to correct the twisted and misaligned teeth.

In the process of correcting the twisted teeth, the embodiment eliminates the step of bonding the lingual bracket, avoids the use of elastic materials such as rubber bands and chain rings, and improves the twisting force continuously and stably. At the same time, the foreign body sensation on the tongue side of the patient is greatly reduced. The operation is simple, and only the cross-shaped attachment needs to be placed at the bottom of the groove, the twisting side is appropriately bent, and the retention arch wire 8 is completely inserted into the groove for ligation.

The method of using the twisting tooth orthodontic appliance is specifically as follows: bonding the twisting bracket 9 to the tooth long axis of the tooth 12 to be twisted, and bonding the first end bracket 10 and the second end bracket 11 to the other teeth on both sides of the tooth 12 to be twisted; placing the non-self-locking bracket special twisting tooth spring sheet into the groove of the twisting bracket 9, and then using the retaining arch wire 8 to pass through the groove of the twisting bracket 9 to fix the non-self-locking bracket special twisting tooth spring sheet, and the two ends of the retaining arch wire 8 are respectively fixed on the first end bracket 10 and the second end bracket 11; after several days, the bending angle of the non-self-locking bracket special twisting tooth spring sheet is appropriately adjusted according to the situation to correct the twisted misaligned teeth.

Claims (4)

1. A twisting tooth orthodontic appliance, characterized in that it comprises a retaining archwire, a first end bracket, a twisting bracket, a second end bracket and a twisting tooth spring piece, the twisting bracket adopts a non-self-locking bracket, the twisting bracket is bonded to the tooth to be twisted, a twisting tooth spring piece is arranged in the groove of the twisting bracket, a retaining archwire is also passed through the groove of the twisting bracket, two ends of the retaining archwire are respectively fixed to the first end bracket and the second end bracket, the twisting tooth spring piece is arranged between the groove of the twisting bracket and the retaining archwire, the twisting tooth spring piece adopts a twisting tooth spring piece special for non-self-locking brackets, the non-self-locking bracket special twisting tooth spring piece comprises a transverse piece and a longitudinal piece, the transverse piece The transverse piece is arranged perpendicularly to the longitudinal piece, the middle part of the transverse piece is connected to the middle part of the longitudinal piece, the transverse piece and the longitudinal piece form a cross-shaped structure, the cross-shaped structure is adapted to the cross-shaped groove of the non-self-locking bracket, the transverse piece is divided into a transverse left half and a transverse right half by the longitudinal piece, the transverse left half is bent and folded in half to form a U-shaped spring part, the transverse right half is bent and not folded in half to form a bending part, and the longitudinal piece is divided into a longitudinal upper half and a longitudinal lower half by the transverse piece; the lengths of the longitudinal upper half and the longitudinal lower half are respectively smaller than the lengths of the transverse left half and the transverse right half; the spring part and the bending part of the torsion tooth spring piece are arranged in sequence along the correction direction of the torsion tooth, and the retention arch wire contacts the bending part of the torsion tooth spring piece. 2. The twisting dental appliance as described in claim 1 is characterized in that the ends of the longitudinal upper half and the longitudinal lower half close to the gum direction are bent at an angle of 90°-100° to form a retention and anti-slip portion. 3. The twisting dental appliance as described in claim 1 is characterized in that the ends of the longitudinal upper half and the longitudinal lower half close to the jaw direction are bent at an angle of 100°-150° to form a traction portion. 4. The twisting dental appliance as described in any one of claims 1 to 3, characterized in that the transverse sheet and the longitudinal sheet are respectively made of medical stainless steel or medical alloy, and the thickness of the transverse sheet and the longitudinal sheet is 0.02-0.03 mm, and the width of the transverse sheet and the longitudinal sheet is 0.3-0.35 mm.