DE2357573A1 - Brace for ortho-dentics - has sliding embracing mounting part to open and close wire-clamping slot for clasp wire - Google Patents

Abstract

The dental brace has a body with mesial-distal clasp wire slot opening toward the labial surface part, and a mounting element mounted on the brace body and having two opposed parts in embracing sliding engagement with the corresponding surface parts of the body. One part is shaped so that it extends over the labial surface part to close the corresp. side of the slot and hold the wire, while the mounting element is movable with the embracing sliding engagement on the brace body between two positions, in which the labial slot side opening is correspondingly opened and closed. Units positively hold the mounting at least in the slot-closing position. No separate connection is needed to clamp the wire in the slot.

Description

Gustaf H. Hanson, 33 ¥ or side Drive, Hamilton,
Ontario, Canada '. '

Tooth regulation environs

The invention relates to improvements in orthodontic braces., which are used to apply corrective moving forces to teeth.

In orthodontic procedures, orthodontic braces are used that are usually attached to a dental band
are fixed, which in turn is placed around the tooth,
although these brackets can of course instead also be attached directly to the teeth, for example by cementing them on. The 'brackets are in the patient's mouth' by means of a thin springy clip wire
connected, which provides the desired forces. .

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In the commonly used procedures, which are known as Designated "upright" technique, each bracket is marked with mesial-clistal-running, labially opening slit which selected a cooperative clarameric relite Absorbs cross-section and spring elasticity. Every . Clamp is attached to the wire by a connection with ordinarily a thinner softer wire attached by hand by the dentist in the patient's mouth after "attaching." the braces on the teeth and the insertion of the clamping wire must be tightened into the slot. The tension wire holds the staple wire in the slot while at the same time allows the necessary movement of the bracket along the brace when the tooth is under the roof of the mouth moved by the applied forces.

Another known method, the so-called "Begg light wire" method, uses a somewhat thinner staple wire used, which is received in a slot 'which sits as close as possible to the dental belt and in the slot, is held by a pin, which is passed through a gingival-occlusal-running Slot in the bracket extends. These pens must also be inserted in the patient's mouth will.

A long tension wire is used for easier handling, with the undesirable long ends after tensioning be tightened so that short ends remain that must be carefully spliced to avoid damage to the mouth of the Patients, on the teeth or on the roof of the mouth or the tongue avoid. Similarly, after insertion, the ends of the above-mentioned pins are severed and the remaining ones the short ends carefully sanded off.

Despite the disadvantages of those used in either method Brackets are still used - because they are empirical

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very adaptable and successful in their way of working are and. able to withstand the high forces and stresses that they encounter in the human mouth are exposed.

The invention has set itself the task of .a novel to create slotted orthodontic brace that doesn't a separate connection for tensioning a staple wire in the slot. According to the present invention becomes an orthodontic bracket with a bracket body with foot, labial, gingxval, oeclusal, distal and mesial surfaces and a mesial-distal one A staple slot is created that extends into the labial Part of the surface opens. Furthermore, it is on the body of the claramer a support member is provided, one of which. Part so trained is that it extends over the labial surface portion, around the corresponding side of the staple slot to hold the wire 'to close, whereby the Halterungsgli.ed can be moved between two positions, in which the labial side opening of the slot is opened or closed accordingly. After all, are facilities provided that inevitably the limb, at least in the closed 'slot position. "

In the following, exemplary embodiments of dental regulating brackets according to the invention will be described in more detail with reference to the drawings explained. The lines point in

Figure 1 is a general perspective view of a single bracket to be attached to .einem dental tape with retaining member in the. closed Slot position and -with one arranged in the slot Staple wire; ■ "■" -. "'

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Fig. 2 is a side view of the embodiment according to Fig * 1, with the staple wire being inserted into the staple and in full lines the wire fully inserted into the bracket is shown in dashed lines;

Fi.g. 3 shows a plan view of the clip according to FIGS. 1 and 2;

Figure 4 is a generally perspective view of a Bracket according to the invention reproducing a Tool for moving the support member the closed to the open position, with only part of the tool shown for reasons of scale is;

FIG. 5 is a front view of a double clamp according to FIG Invention; and in the

Fig. 6 to

10 perspective views of other embodiments of the invention, with parts of the brackets broken away where it is for better illustration ■ is necessary.

In all figures, the same or similar parts are denoted by the same reference numerals.

Each clamp contains a main part 10 with flanges 11 extending towards one another, with which it is fastened to a tooth band 12 which is placed around the tooth 13 by the dentist. At the moment the common practice is that the main part is vnö. Flanges are made integrally with one another by drilling and / or grinding from a piece of stainless steel, the flanges being attached to the belt-12, which is also made from

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-.ι-- ': ■■■■■■ ^: ν ■■■

made of stainless steel, then welded on will. Of course, you can also use other suitable ones Use materials and manufacturing processes. The invention is also applicable to brackets in which flanges and dental tapes are not required, with the bracket directly on the tooth for the time of the "treatment procedure" is cemented.

For the purpose of simplifying the description, it is assumed that that the outer surface of the clip body 10 a labial surface portion 14, occlusal and gingival surface portions 15 and 16, respectively, passing through the labial portion are connected, and has two spaced apart mesial-distal surface parts 17, which also through the labialai part are connected. A base part -18 opposite the labial part 14 is also with the occlusal • and gingival parts and the two mesial-distal Share in connection. It goes without saying that in all embodiments; Main surfaces so smooth, contoured "are that the adjacent parts of the surface merge smoothly into one another and that there are no special delimitation transitions between them....

According to Fig. 1, the main body 10 has a mesialjdistal extending slit. 19, extending into the labial J part opens and a clasp wire 20 picks up. The brace wire has a rectangular cross-section according to the drawing and is dimensioned so that it fits tightly into the slot 19 fits, however, as is known per se to the person skilled in the art, Wires of other dimensions and cross-sections are used who. * * the, depending on the: Forces acting on the To be moved tooth must be applied. The devices for holding the Spang / endr-ahtes in the slot, whereby. .Simultaneous relative movement in the desired directions

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Allowed between the bracket and the clasp wire comprises a generally U-shaped member 21 of thin 'flat' stainless steel shaped to accommodate the Body part 10 embraces and closely with the base, occlusal and labial surface parts coincide. An arm 21a of the resilient member is in a channel between the toothed belt and the walls of a groove used in the base part 18 and can freely, but without essential Slide game into the canal. The holding member is movable between two positions, as can be seen from Fig. 2, where the limb is shown in full and in dashed lines and the labial arm 21b of the Member correspondingly closes or does not close the labial slot opening. - ·

The member is positively held in its "slot-closing" position by the engagement of a rib made by forcing the corresponding part of the arm 21 out of its general plane into a corresponding recess "23" in the base of the bracket body the open slot position by engaging the same rib 22

, retained with another recess 24 in the main body base. In the Schlitzverschlußsteirung the free end of the arm 21b rests on a shoulder 23 on the corresponding side of the slot so that the assembled bracket a

Having a labial surface that is as smooth as possible, eliminating the possibility of irritation to the lips, cheeks etc. of the patient is largely reduced.

The retaining member can easily be moved from the closed to the open position at any time by using of the pliers-like tool 26, which is partially reproduced in FIG. 4, the effective ends 27 of the tool towards each other and with inclined cams -

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- t - V ■■■ - ■■■: ■ - ■ - ■ "■■■■ -.. ■ .--

surfaces "2S - cooperate, -'- the -. themselves, from each mesial-distal Surface 17 extend to occlusal surface 15. Thus, a movement of the two ends pushes -27 towards each other when engaging with the cam surfaces 28 Retaining member from the closed to the open position.

Other forms of mechanical engagement to create the corresponding positive retention between "the retaining member and the clamp body, for example depressions and corresponding" recesses, are obvious to the person skilled in the art. "'""■""" -. "-;■" ■ """-""■'"""."■;.

When in use, the tooth straps are placed on the teeth with the clamps attached. One end of the brace wire is now blocked on the brace with the aid of suitable devices. All holding members not in the open position are moved into this position and the dentist then inserts the wire with a rectangular cross-section into the slots and presses on the holding members to move them into their closed positions, as shown in dashed lines in Fig. 2 is indicated. The member has sufficient strength and rigidity to hold the wire in the slot, but allows free movement of the clamp along the wire, with wire cross-sections that do not correspond to the shown cross-section, different rotations of the clamp relative to the wire are given . ■ "'.-- ^.;

A double clip with two mesial-distal spaced apart clip parts is shown in FIG. 5. the additional depth to the base lingual dimension of the bracket due to the peck of the flat metal link is essential smaller than that which 'would be required to provide suitable slots for the tension wire holder, so that'

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In addition to facilitating the assembly of the brace wire, the clips can have a shallower depth, are much more comfortable for the patient, and there is far less possibility of contact between the clips and the inside of the mouth. It has also been found that the occlusal-gingival dimension can be significantly reduced, which results in a correspondingly reduced possibility of occlusal disturbances during use. From clen Fig. 1 and 2 it can be seen that the slot 19 sits closer to the gingival part than to the occlusal part, since connections do not have to be used as with previous brackets in order to arrange it approximately in the middle between the two clamping slots, which leads to the fact that the brace wire is less subject to breakage or destruction due to occlusal forces.

FIG. 5 also shows how the above-mentioned requirement for a reduced labial base area can be taken advantage of can reach to come instead to a bracket with an intermediate part 29 that is thick enough to accommodate a Take up the occlusal-gingival hole 30. As you can see from the drawing, this hole can create a corresponding one To receive wire 31 which, for example, forms one end of a spring which is used by the dentist to to apply appropriate forces to the bracket. It can also be seen that a combination bracket is created which wire and pin openings are to be used in connection with those described above Light wire processes are required, as described, for example, in US Pat. No. 3,163,933.

Fig. 6 shows an embodiment in which the edges of the slot 19 at the transition to the surface parts 17 somewhat are curved to allow rotation of the bracket around the wire

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allow without the slit edges in the clasp wire engage and excessive ripening forces are generated between them and the wire. .

In the embodiment of FIG. 7, the sloping Cam surfaces 28 in both base-labial and mesial-distal -Direction curved during the; Body part 10 is provided with only one recess 24, the rib 22 under the transition of the gingival surface part Ϊ6 and of the base surface portion 18 engages to hold the member in the closed slot position.

The support means of ■ embodiment of FIGS. 8 and 9 are the same as in the embodiment of Fig. 7. The labial arm 21b extending _w but over the full extent of the labial surface portion 14 in the closed slot position, die.freie edge of the arm is smoothly rounded in a curve that continues in the bracket body. The clamp body is outside yours ^: with a -gingival, smoothly rounded protrusion

32 with mutually opposite mesial-distal Arms that serve as an anchor for elastic bands. those between the brackets are used in some procedures Find. ■.

In the embodiment according to FIG. 10, it is gingival Part of the clamp body between the gingival surface part and, the clasp wire slot formed so deep, that a mesial-distal end is elongated, opening 33 with a cylindrical cross-section can be provided can. The tubular opening thus formed runs parallel to the clasp wire slot. Such a bracket will inserted into the patient's mouth in such a way "that the opening

33 is arranged in such a way that additional corresponding construction

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is able to include parts that are necessary for the method used are necessary or desirable, BeiST> ielsvreJ se A brace in the 6T6 position can accommodate a buffer and / or the clip can be on either side of the mouth be provided to accommodate the ends of a head rod, that is only worn by the patient at night. A double bracket is shown because it is usually desirable to make the tubular opening 33 as long as possible, however, this feature can also be added to individual brackets.

Although in all of the described embodiments Retaining member 21 as completely flaoh on both sides is reproduced, "it needs in other execution- ' not to be flat, but rather, for example, the part of the inner surface that closes the slot 19, corrugated or roughened for better engagement with be the brace wire for special purposes " The link can also be in the form of two or more wire or strip links placed side by side and are mounted so that they work on an equal footing with the single flat specially described link.

- Another valuable advantage that can be achieved with the clip according to the invention is that the holding member 21 is sufficiently rigid so that it can be addressed as rigid, but in some embodiments it can also be sufficiently elastic to support its own Transferring holding force to the brace wire to move the tooth in addition to the force generated by the brace wire. In a double brace of Fed.ereffekt characteristic of the two holding members are used van

■ zuzuaddieren him to the wire during the movement of the tooth by vornehln, while in only one stretching

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- η.- V

Holding member in this way a torque is applied to the tooth in order to rotate it.

Patent claims :

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Claims (13)

Patent claims 1 J dental adjustment bracket consisting of a bracket body with a mesial-distal extending clip wire slot, which opens to the labial surface part, and with a mounted on the brace body Retaining member, characterized in that the retaining member (21) has two mutually opposite Parts (21a, 21b), which in a comprehensive sliding engagement with the corresponding body surface parts (14, 18), one part (21b) being shaped so that it sicli over the labial surface part (14) to the Closing the corresponding side of the clasp wire slot (19) to hold the wire extends while the Retention link (21) with the comprehensive Glelteln handle is movable on the clip body (10) between two positions in which the labial slot side openings is opened and closed accordingly, and further marked by means (22, 24) for forcibly holding the member (21) at least in the slot-closed position. 2. Clamp according to claim 1, characterized by means (22, 23) for the inevitable holding of the Link (21) in the open slot position. 3. Clip according to claims 1 or 2, characterized in that that the support member is a generally U-shaped flat member corresponding to the labial, occlusal and base parts, with the arms of the U in 509821/0162 comprehensive sliding engagement with the labial and base parts stand. . . 4. Clip according to claim 3, characterized in that the inevitable support member a part (22) of the with the base corresponding portion (21a) of the link (21) outside its general level includes and with a cooperating part (24) de & Klairimerkörpers in Can be brought into engagement. A bracket according to claim 2, characterized in that the support member is a generally U-shaped flat member and conforms to the labial (14), occlusal (15) and base (18) surface portions and the inevitable support member is a portion of the base-mating portion (21a) of the member displaced from the general plane comprises: and '. "is engageable with two spaced-apart, similarly cooperating parts (23, 24) of the bracket body (10)." . ·. " ^V 6. Clip according to claim 4, characterized in that the constrained retaining member has a mesial-distal extending Back (^ 2) of the support member (21) includes the Retaining member in the slot closed position in a corresponding recess (24) in the clip body base surface part is engageable. 7. Klammer.nach claim 5, characterized in that. the constraining member is a mesial-distal one Rib (22) of the holding member (21), which in the "open seat seat position and in the closed slot position in corresponding interacting recesses (23, 24) engages in the upper surface part of the Klaiamerkörperbasls. 509821/0182 8. Clamp according to one or more of claims 1 to 7 in connection with a toothed belt, characterized characterized in that the one with the base surface part (18) matching part of the holding member (21a) received in an opening between the band and the recess is. · 9. Clip according to one or more of the claims. 1 to 8, characterized by two separate clip parts (10) which are arranged at a distance from the medial-distal end and are each provided with a corresponding holding member (21) (Fig. 5 or 10). 10. Clip according to claim 9, characterized by a opening (30) extending occlusally-gingivally between the bracket parts (Fig. 5). 11. Clip according to one or more of claims 1 to 10, characterized by 'a labially extending - Projection (32) on the labial surface part (16) with mesial-distally extending arm parts, wherein the projection forms an anchorage for elastic bands or the like (Figs. 8 and 9). 12. Clip according to one or more of claims 1 to 10, characterized by cam surfaces (28) extending from the corresponding distal-mesial surface parts to the occlusal surface part (15) and with a corresponding tool (26) can cooperate with which the support member for moving the member out of the closed slot position is movable into the open slot position. 13. Clip according to one or more of claims 1 to 12, characterized in that the part of the clip body · 509821/0162 (10) between the gingival surface part (16) and the clasp wire slot (19) with a mesial-distal extending opening (33) is provided (Fig. 10). 50982 1/0 16