JPH0461855A - Dentition correcting bracket - Google Patents

Abstract

PURPOSE: To comfortably amount, use, and correct the dentition by inclining the base of a wire groove, which stores a ribbon arch wire with a rectangular cross-section, to a horizontal axis of the final desirable position of a tooth fitted in a bracket at a prescribed angle. CONSTITUTION: A bracket is provided with a main body 10 having an undercut face part 13 for fitting an adhesive material in the lip side face of a tooth with an appropriate cement, and a main body 10 is provided with an arch wire groove 14, a lock pin groove 12, and a projection part 11 which engages a bent end of a pin 20 engagingly locked to a bracket in using. The base of a wire groove 14 which receives a ribbon arch wire with approximately vertical cross section is inclined to a horizontal axis of the final desirable position of a tooth fitted in the bracket at a specific normal angle θbetween 0-20 deg., and the bracket is fitted around the tooth by such a method as approximately being balanced therewith. This constitution allows a dental technologist to use it favorably by just selecting a bracket necessary for moving the desired tooth and mounting it on the tooth for moving by a desired angle.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an orthodontic bracket, and particularly to a ribbon arch type orthodontic bracket.

(Prior Art and Problems to be Solved by the Invention) An orthodontic bracket includes: (i) a base part that is adopted as an attachment on the labial side of a tooth; (11) a lock pin having a substantially vertical opening into which the lock pin is inserted; (i i i) consisting of an archwire support extending substantially perpendicular to the aperture mentioned in (i i) and disposed between the aperture and the base, as a bracket of the type previously mentioned; It is configured as described below.

The bracket is of the type for use in the ribbon arch method. This ribbon arch method is a method in which the archwire can be inserted vertically into the bracket, as opposed to the edgewise method in which the bracket has a horizontal slot opening for inserting the archwire.

Referring to the prior art specification known to the applicant, U.S. Pat. is disclosed.

Clapper - US Pat. No. 4,676,746 uses the principles of pre-torque, pre-angle and pre-rotation, but requires a three-piece combination of replaceable parts.

The inventor's earlier Australian Patent No. 490,821 discloses a proposal for a base having an undercut base similar to that disclosed in the above-mentioned Clapper specification.

Markel U.S. Pat. No. 4,659,309 also discloses a rhombic pre-torque/pre-angle edgewise bracket.

This bracket, along with other edgewise brackets, has sharp edges that tend to cause discomfort in the patient's mouth and create significant resistance to the passage of food.

The Fujita bracket disclosed in U.S. Pat. No. 4,655,708 is a bracket adapted to be applied to the labial or lingual side of the tooth, but current brackets are applied to the labial or buccal side of the tooth. intended to be applied.

Fujita brackets placed on the labial side have variable groove positions that can possibly include ribbon arches or vertical insertions from the occlusal side. The grooves of the Fujita bracket have a specific angle, which makes the torque angle inaccurate and the finish standard low.

Ribbon arch (B e g g) type brackets disclosed by Johnston in U.S. Pat. No. 3,407,39 and Kessling in U.S. Pat. The equipment used is shown. Modern Be
The main differences between the gg technique and the original ribbon arch method are:
Modern technology uses round wires and not square wires. Johnston brackets can be used to increase the length of the archwire groove using an auxiliary device called a "stabilizer bar."

Similarly, Forster, in U.S. Pat. No. 4,268,249, discloses a ribbon arch bracket that employs an aid similar to that of Johnston, discussed above. Forster brackets can be square archwire brackets or are not pre-torqued appliances.

Kessling in U.S. Pat. No. 3,198,821 shows an improved ribbon arch bracket, but with a free tipping mesio distally.
The use of a cutaway flange that allows for oscillation, but intentionally avoids the potential for restriction of tilting movement (this movement facilitates correction of the crown position of the tooth, but not the root position).

The Kessling bracket requires the use of an auxiliary device such as the Kesslin-Begg spring pin disclosed in British Patent Specification No. 1421601 which allows the angular root position to be modified.

This movement must be obtained after the previously mentioned crown tilt has occurred.

The object of the present invention is to provide an archwire-type tooth that allows for smooth rounded edges in order to provide greater patient comfort and less resistance to the passage of food, thereby overcoming some of the disadvantages mentioned above. The purpose of the present invention is to provide orthodontic orthodontic brackets.

Another object of the invention is to provide an orthodontic bracket in which the groove angles are specific to each tooth and can be precisely adjusted to a greater degree of precision than previously achievable with prior art adjustments. There is a particular thing.

It is also an object of the present invention to provide an archwire channel that is assembled with a one-piece bracket.

Another object of the invention is to provide an archwire-type orthodontic bracket in which the archwire grooves are preslanted during manufacture and no angle correction is required.

According to the present invention, an archwire support part receiving a ribbon archwire of substantially right-angled cross section includes a groove in the support part adapted to be inserted into the gingival occlusion for fixation to the labial side of the tooth. An orthodontic bracket of the type described in is provided.

Therefore, the base of the support part is 0 to 20 mm relative to the horizontal axis depending on the final desired position of the tooth attached to the bracket.
The bracket is tilted to a specific pre-angle between 0.0 and 0.05° so that the bracket is attached to the tooth in a substantially proportionate manner.

In this way, the dental technician simply needs to select the necessary bracket to effect the desired tooth movement and attach it to the tooth in order to effect the desired angular movement of the tooth.

Similarly, the present invention also includes an orthodontic bracket that is secured to a tooth to provide torque movement of the tooth, the angle of the archwire support being preset at an angle between 0 and 20 degrees. There is.

The archwire ribbon is held in place by a generally vertically oriented head pin slidably mounted on the bracket and adapted to engage the ribbon arch in use.

According to another aspect of the invention, methods of using the orthodontic brackets described herein are provided.

Its method of use is: (i) as part of the first and second stages of treatment, brackets with pre-beveled or beveled groove bases are attached to the labial aspect of teeth in a substantially upright position, and the archwire supports are round or square; (ii) as part of a subsequent treatment step, a particular locking pin is forced onto the archwire, so that the archwire is It consists of a chip that rests on the support over most, but not all, of the area between the top end and a location proximate to the opening.

In particular, the base of the archwire groove is 90° relative to the lock groove.
It can be set at a certain angle from 90° for specific tooth requirements. This gives the clinician the option of setting the bracket on the tooth at 90 degrees, but only allows the practitioner to select a bracket with a pre-tilt or set angle depending on the desired tooth movement.

In the third stage of treatment (as described by Begg),
Square archwires are conveniently used for tooth setting.

A special locking pin with a long head to equalize the distance between the archwire and the top of the bracket at the gums is used to keep the archwire securely placed in the groove base, thus The straight springs used by prior art brackets are not required.

The bracket is shaped to maximize the length of the archwire support, thereby giving the archwire the length of the lever arm (hereinafter referred to as rotational moment) between the head of the locking pin and the archwire support (or groove). increase

As the locking pin presses firmly into the archwire placed at the base of the bracket groove, the teeth are moved to the desired position to cause distortion of the wire so that the wire elastically returns to its original shape.

(Example) An example of the orthodontic bracket of the present invention will be described in detail below with reference to the drawings.

Referring to FIGS. 1-5, the bracket is depicted in various elevations and has a body 10 with an undercut surface 13 for attachment of adhesive to the labial surface of the tooth with a suitable cement. The body has an archwire groove 14 and a lock pin groove 12.

A protrusion 11 is provided which engages the bent end of the pin which locks into the bracket in use.

The base of the archwire groove is tilted at an angle θ° ranging from approximately 0 to 20°. The vertical walls of the lock pin groove 12 and the archwire groove also have an angle θ° in the range of approximately 0 to 20°.
is tilted to

The angles are preset during manufacture of each individual bracket, and each bracket can be selected by the dentist depending on the desired torque and angular movement of the teeth for the patient.

In the third stage of treatment, a square cross-section archwire is used to perform torque transfer as schematically depicted in FIG. At this stage of treatment, a locking pin can simply be used as a retaining pin, and the pin 30 depicted in FIG. 7 is very comfortable for the patient to use.

In the second stage of treatment, a round archwire can be used to perform the same angular movement of the teeth as shown in FIG. However, a locking pin 20 as shown in FIG. 6 is used to force the archwire against the base of the bracket slot 14 to effect the desired angular movement of the tooth.

The long head 21 with a small head 22 engaged with the bracket at the top (gum) of the locking pin groove holds its position within the groove. As clearly shown in FIGS. 4 and 5, the bracket configuration is elongated in a generally L-shape to allow for the creation of a long groove base for support of the archwire.

The increased lever arm thus provided by this configuration increases the moment of force available to upright the teeth.

[Brief explanation of drawings]

Figure 1 is a plan view of the bracket attached to the tooth surface, Figure 2 is a base view of the bracket, Figure 3 is a side view showing the angle of the bracket groove in the vertical plane (torque), and Figure 4 is the archwire groove. Figure 5 is a front elevation view of the bracket showing the angle of the base, Figure 5 is a rear elevation view of the base of the bracket showing the attachment to the tooth and relief clearance for extrusion of excessive fixation, and Figure 6 is the treatment stage. FIG. 7 is an elevation view of the fixation pin for the first and second stages of treatment; FIG. 8 is a schematic diagram intended for torque movement of teeth according to the invention; FIG. , FIG. 9 is a schematic diagram of a tooth for angular movement according to the invention, and FIG. 10 is a bracket with an arch line and an integrated locking pin. DESCRIPTION OF SYMBOLS 10... Main body, 11... Protrusion, 12... Lock pin groove, 13... Undercut surface part, 14... Archwire groove, 20... Lock pin, 21... Small head Part, 22... Long head part, 30... Pin. Fig 10゜1゜Fig, 9゜Procedural amendment dated 1998

Claims (1)

[Claims] 1. A base portion adapted to be attached to the labial side of a tooth, a lock pin receiving portion extending through the lock pin and having a substantially vertical opening, and a lock pin receiving portion extending substantially perpendicularly to the opening; In a type of orthodontic bracket having an archwire support part disposed between the opening and the base part for fixing to the labial side of the elongated tooth, the bracket is inserted into the support part in an interlocking manner with the gums. a groove consisting of an archwire support for accommodating a ribbon archwire of generally rectangular cross-section, the base of said support being fixed at an angle of 0 to 20° relative to the horizontal axis at the final desired position of the tooth attached to the bracket; Orthodontic brackets that are tilted at a preset angle, and the brackets are attached to the teeth approximately symmetrically. 2. The dentition according to claim 1, wherein the bracket is attached to the labial side of the tooth to achieve torque movement of the tooth, and the angle of the archwire support part is preset at an angle of 0 to 20 degrees. orthodontic brackets. 3. The ribbon arch wire is held in place by a generally vertically oriented head pin slidably mounted within the opening in the bracket and adapted to engage the ribbon arch in use. Orthodontic brackets as described. 4. (i) As part of the first and second stage treatment, the archwire support can be tilted from the horizontal of the gingival end of the support arranged to support a round or square archwire; , applying a bracket with a pre-angled or beveled groove base to the labial aspect of a substantially upright tooth; (ii) forcing a particular locking pin onto the archwire as part of a subsequent treatment step; 4. The orthodontic bracket according to claim 1, wherein the archwire is supported on the support portion over most, but not all, of the distance between the uppermost end and a position proximate to the opening. Usage of. 5. The method of using the orthodontic bracket according to claim 4, wherein the square archwire can be used for the final setting of the teeth in the third stage of treatment. 6. A particular locking pin with a long head equal to the distance between the archwire and the top of the bracket at the gingival end is used to hold the archwire securely seated in the groove base. 3. The orthodontic bracket according to any one of 3. 7. When the bracket is formed to maximize the length of the archwire support and the locking pin presses the archwire against the groove base, causing distortion of the wire so that the wire elastically returns to its original shape, the tooth An orthodontic bracket in which the length (rotational moment) of the lever arm between the head of the locking pin and the distal end of the archwire support is increased to move the locking pin to a desired position.