JP3155836U - Orthodontic bracket - Google Patents

Abstract

An orthodontic archwire is easily and surely fixed by being mounted on a tooth surface, and a bracket in which the archwire is not likely to come off during the correction period. A bracket body 1 having an archwire mounting body 3 on a base plate 2 bonded to a tooth surface, and a lock member 10 for fixing the archwire to the bracket body, the base plate having a lateral width at an upper portion. The attachment body is formed so as to be narrowed gradually from the upper side to the lower side. The attachment body is formed so that the lower part is thicker than the upper part, the upper surface is inclined, and a wire slot 4 having an upper end opened at the lower part of the upper surface. A locking groove 5 is formed in the upper part of the lower side wall of the wire slot, a locking projection 6 is provided in the front side wall of the locking groove, and the lock member is formed of an elastic plate in a substantially square shape. An engaging recess 14 is provided at the lower end, and the central portion is pivotally attached to the slope on the upper part of the mounting body. The lower end of the short side is engaged with the engaging projection when the slot is closed. It is formed so that it can be combined. [Selection] Figure 1

Description

  The present invention relates to an orthodontic bracket that is attached to a tooth surface and can securely fix an arch wire (orthodontic wire) extending in a near-distal direction.

Conventionally, in orthodontic correction, an orthodontic appliance is fixed to the tooth surface with an adhesive or the like, an archwire is inserted between the orthodontic appliances, and the teeth are pressed by the restoring force of the archwire. Thus, the dentition is moved to the correct position for correction.
In a conventional bracket used for orthodontics, a wire slot in the near-centrifugal direction with an opening on the side surface is formed at the center of the mounting body standing on the base that adheres to the tooth surface. Is attached from the side and ligated with a ligature wire, making it difficult to install the archwire smoothly, especially when a bracket is attached to the back of the tooth. Therefore, in view of such a problem, as in Patent Document 1 below, a wire insertion groove having an opening on the upper side of the attachment body is formed, and the arch wire is fitted from the tooth tip side, so that the wire insertion groove is There is one in which the archwire is fixed by a locking piece that opens and closes.
Actual Kosho 63-7220

The bracket capable of fitting the above-mentioned conventional archwire from the tooth tip side has an advantage that the correction work is easy to perform, but has a drawback that it is not easy to manufacture and is expensive. In addition, since the attachment body travels larger than the tooth surface, the feeling of foreign matter on the tongue is particularly unpleasant, especially when it is used while being adhered to the back surface of the tooth.
In view of the above-mentioned conventional problems, the present applicant has devised a new bracket and previously filed a utility model application (Registration No. 3129689). The above idea is to fix the archwire to the bracket with a lock plate that can be rotated or slid, and can achieve the intended purpose, but the lock plate often moves during orthodontic treatment, It was found that the archwire could come off the bracket.

  Therefore, according to the present invention, the arch wire is fitted from the tooth tip side so that the dentition can be smoothly corrected, the arch wire can be securely fixed during the correction period, and the structure is simple and easy to manufacture. Moreover, the bracket for correction which reduced the foreign material feeling to a tongue tip is provided.

The bracket of the present invention is an orthodontic bracket comprising a bracket body in which an archwire mounting body is erected on a base plate that adheres to a tooth surface, and a lock member that fixes the archwire to the bracket body, The base plate has a width that is gradually reduced from the upper side to the lower side, and the attachment body is formed with a thicker bottom than the upper part and the upper surface is inclined, A wire slot having an open upper end is formed, a locking groove is formed in the upper part of the lower side wall of the wire slot, and a locking projection is provided in the front side wall of the locking groove. The elastic plate is formed in a substantially square shape, an engagement recess is provided in the lower end portion thereof , and the central portion thereof is pivotally attached to the slope of the upper portion of the mounting body, and the lower end on the short side of the lock member When the part closes the slot, the engaging recess It is constituted as can engage the engaging convexed latch projection of over scan plate.

  Further, the attachment body is formed such that the lower part is thicker than the upper part and the upper surface is inclined, and a wire slot having an upper end opened at the lower part of the upper part is formed. The lock member is formed so that the elastic plate is formed in a substantially square shape, the upper portion thereof is slightly bent and is in contact with the upper surface of the base plate, and the engagement hole is formed in the upper center portion of the lock member. A substantially central portion of the locking member is pivotally mounted on the inclined surface of the upper part of the mounting body, and when the lower end portion of the locking member closes the slot, the engaging hole engages with the locking convex portion of the base plate. In some cases, it may be configured to do so.

  Further, the attachment body is formed with a thicker portion from the top to the top and the top surface is inclined, and a wire slot having an upper end opened at the bottom of the top surface, and a locking groove is formed at the top of the lower side wall of the wire slot. The locking member is provided with a locking projection on the inside of the front side wall of the locking groove, and the lock member is formed in a substantially square shape with an engagement projection at the lower end and a central portion. A sliding hole is provided in the longitudinal direction, and a substantially central portion thereof is slidably mounted on the slope of the upper part of the mounting body, and the lower end portion on the short side of the locking member is engaged when the slot is closed. In some cases, the convex portion may be configured to engage with the locking convex portion of the base plate.

According to the bracket of the present invention, the archwire can be fitted and fixed securely from the tooth tip side. In particular, the work of attaching the arch wire to the back of the tooth, which is difficult to work, can be performed very smoothly.
In addition, the arch wire in the slot is pressed by the lock member, and the locked state is securely maintained, so that it does not break off, so that tensile force acts on the arch wire during correction work. Even then, there is no risk of detachment from the bracket, and the correction work can be performed with peace of mind.
In addition, since it can be formed in a very small size, there is also an advantage that when it is mounted on the back surface of the tooth, the feeling of foreign matter on the tongue tip can be reduced as much as possible.
Furthermore, the bracket according to the present invention is simple in construction and easy to manufacture, and can reduce the cost.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 to 3, reference numeral 1 denotes a bracket body, and a thin plate-like base plate 2 that adheres to a tooth surface is formed such that its lateral width is gradually narrowed from the upper side to the lower side, and the lower side of the upper surface thereof. The attachment body 3 is erected from the portion.
The attachment body 3 is formed such that the lower part is thicker than the upper part, the upper surface is inclined, and the wire slot 4 is recessed in the lower part of the upper surface. A locking groove 5 is provided in the upper part of the lower side wall of the wire slot 4, and a locking projection 6 is provided in the front side wall of the locking groove 5. Reference numeral 7 denotes a hook protruding below the attachment body 3 for ligating the ligature wire.
Reference numeral 10 denotes a lock member formed in a square shape with an elastic plate, and a central portion thereof is pivotally attached to the inclined surface portion 11 of the mounting body 3 so as to be rotatable by a shaft pin 12. Is provided with an engaging recess 14 that can engage with the locking protrusion 6. Thus, the opening 15 of the wire slot 4 can be opened and closed by engaging and disengaging the engaging protrusion 6 with the engaging recess 14.

Next, the action of the bracket will be described. After the base plate 2 is bonded to the tooth surface t, the arch wire W is fitted into the wire slot 4 from the tooth tip side, and the lock member 10 is rotated in the direction of the arrow, When the locking recess 14 is engaged with the locking projection 6 of the attachment body 3, the opening 15 is blocked and the archwire W can be securely fixed in the wire slot 4.
Thus, the locking end portion 13 of the lock member 10 is elastically supported in the locking groove 5 and the engaging concave portion 14 is adapted to engage with the locking convex portion 6. Therefore, there is no possibility that the lock member 10 will move excessively during the correction period.
In this embodiment, the mounting protrusion 3 is provided with the locking projection 6 so as to be able to engage with the engaging recess 14 provided in the lock member 10. However, the mounting body 3 is provided with the engaging recess. At the same time, a locking projection may be provided on the lock member 10.

In this embodiment, as shown in FIGS. 4 and 6, the attachment body 21 provided on the base plate 20 that adheres to the tooth surface is formed so that the lower part is thicker than the upper part, the upper surface is inclined, and the upper surface is inclined. A wire slot 22 is recessed in the lower part. A locking groove 23 is provided in the upper part of the lower side wall of the wire slot 22. A locking projection 24 is provided on the upper part of the base plate 20.
Reference numeral 25 denotes a lock member formed in a rectangular shape with an elastic plate, and a central portion thereof is pivotally attached to the inclined surface portion 26 of the mounting body 21 by a shaft pin 27, and the locking end portion 28 is By engaging with and disengaging from the locking groove 23, the opening 29 of the slot 22 can be opened and closed.
In addition, the upper end portion is formed to be bent slightly so as to contact the upper portion of the base plate 20, and when the lower end portion 28 is engaged with the engagement groove 23, the engagement can be engaged with the engagement convex portion 24 on the base plate. A hole 30 is provided.

Thus, in order to use the bracket, after the base plate 20 is bonded to the tooth surface, the arch wire W is fitted into the wire slot 22 from the tooth tip side, the lock member 25 is rotated, and the lower end portion 28 thereof. Is engaged with the locking groove 23, the opening 29 is closed and the archwire W can be securely fixed in the wire slot 22.
Thus, the locking end portion 28 of the lock member 25 is elastically supported in the locking groove 23, and the engagement hole 30 provided in the upper end portion is fitted to the locking projection 24 of the base plate 20. Therefore, the lock member 25 does not move excessively during the correction period. In addition, 31 is a ligation convex part, and is used for ligating an arch wire by spanning a ligature wire between the projection 31 and the hook 7 in the initial stage of orthodontic treatment.

In this embodiment, as shown in FIGS. 7 to 10, the attachment body 41 provided on the base plate 40 that adheres to the tooth surface is formed with a thicker lower part than the upper part, and the upper surface is inclined, A wire slot 42 is recessed in the lower part of the upper surface. A locking groove 43 is provided in the upper part of the lower side wall of the wire slot 42, and a locking projection 44 is provided in the front side wall of the locking groove 43.
Reference numeral 45 denotes a lock member formed in a rectangular shape with an elastic plate, and an engaging protrusion 47 that can be engaged with the engaging protrusion 44 is provided at the engaging end 46, and at the center in the longitudinal direction. A sliding hole 48 is provided, and is attached to the inclined surface portion 49 of the mounting body 41 so as to be slidable by the shaft pin 50. In addition, a recess 51 for inserting the tip of the tweezers is provided at the upper end of the upper surface so that the sliding operation can be performed smoothly.

In order to use the bracket, after the base plate 40 is bonded to the tooth surface, the arch wire W is fitted into the wire slot 42 from the tooth tip side.
Thus, when the tip of the tweezers is inserted into the recess 51 and the lock member 45 is slid and the engaging projection 47 is engaged with the locking projection 44 of the mounting body 41, the opening 52 is closed. While being peeled off, the arch wire W can be securely fixed in the wire slot 42.
Thus, the locking end portion 46 of the lock member 45 is elastically supported in the locking groove 43, and the engagement convex portion 47 is engaged with the locking convex portion 44 of the slot 42. Therefore, it cannot be easily removed, and there is no possibility that the lock member 45 will move excessively during the correction period.

It is a front view of the bracket in Example 1. It is a front view of the state which fixed the arch wire. It is the sectional view on the AA line in FIG. It is a top view of the bracket in Example 2. It is a front view of the state which fixed the arch wire. It is the BB sectional view taken on the line in FIG. It is a front view of the bracket in Example 3. It is CC sectional view taken on the line in FIG. It is a front view of the state which fixed the arch wire. It is the DD sectional view taken on the line in FIG.

DESCRIPTION OF SYMBOLS 1 Bracket main body 2 Base plate 3 Attachment body 4 Wire slot 5 Hook 6 Locking convex part 10 Lock member 11 Slope part 12 Shaft pin 13 Locking end part 14 Engaging recessed part 15 Opening part 20 Base board 21 Attachment body 22 Wire slot 23 Locking groove 24 Locking convex part 25 Locking member 26 Slope part 27 Shaft pin 28 Locking end part 29 Opening part 30 Engagement hole 31 Ligation convex part 40 Base plate 41 Attachment body 42 Wire slot 43 Locking groove 44 Locking Convex part 45 Lock member 46 Locking end part 47 Engaging convex part 48 Sliding hole 49 Slope part 50 Shaft pin 51 Recess 52 Opening part

Claims (3)

An orthodontic bracket comprising a bracket body provided with an archwire mounting body on a base plate bonded to a tooth surface, and a lock member for fixing the archwire to the bracket body, wherein the base plate is The lateral width is gradually narrowed from the upper part toward the lower part, and the mounting body is formed with a thicker bottom than the upper part, the upper surface is inclined, and the upper end is opened at the lower part of the upper surface. A wire slot is formed, a locking groove is formed in the upper part of the lower side wall of the wire slot, and a locking projection is provided inside the front side wall of the locking groove. The lower end of the lock member is provided with an engagement recess, and the central portion is pivotally mounted on the slope of the upper part of the mounting body. Be able to engage with the locking projection Orthodontic bracket, characterized. An orthodontic bracket comprising a bracket body in which an archwire mounting body is erected on a base plate that adheres to a tooth surface, and a lock member that fixes the archwire to the bracket body, wherein the base plate is The lateral width is gradually narrowed from the upper side toward the lower side, and a locking projection is provided at the upper center, and the lower part of the mounting body is formed thicker than the upper part. The upper surface is inclined, a wire slot having an upper end opened at the lower part of the upper surface, a locking groove is formed at the upper part of the lower side wall of the wire slot, and the lock member is formed in a substantially square shape. The upper part of the base plate is slightly bent so as to contact the upper surface of the base plate, and an engagement hole is provided in the upper end part thereof, and the central part is pivotally attached to the slope of the upper part of the mounting body. The lower end of the locking member is Orthodontic bracket, characterized in that during closing the lot, the engaging holes are then adapted to engage with the locking protrusions. An orthodontic bracket comprising a bracket body in which an archwire mounting body is erected on a base plate that adheres to a tooth surface, and a lock member that fixes the archwire to the bracket body, wherein the base plate is The lateral width of the mounting body is gradually narrowed from the upper side to the lower side, and the mounting body is formed thicker at the lower part than the upper part to incline the upper surface, and the upper end is opened at the lower part of the upper surface. A locking groove is formed in the upper part of the lower side wall of the wire slot, and a locking projection is provided in the front side wall of the locking groove. It is formed in a substantially square shape, and an engaging convex portion is provided at the engaging end portion, and a slide hole is provided in the central portion in the longitudinal direction, and is slidably mounted on the slope on the upper part of the mounting body. The lower end of the short side of the member closes the slot , Orthodontic bracket, characterized in that the engaging convex portion formed by adapted to engage with the locking protrusion of the locking groove.

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