Abstract: In order to provide an orthodontic bracket having no tie wings, capable of removing drawbacks of prior art brackets, in an orthodontic bracket according to the present invention a main body of the bracket is made of shape memory alloy or resin. Further, in lieu of tie wings, there are disposed nail portions for holding an arch wire in a slot of the bracket. Owing to such a construction, the orthodontic force can act thereon with a high efficiency and the size of the bracket can be reduced. In addition, since the tie wings are unnecessary, accidents due to a cut end of a ligature wire are reduced.

Abstract: This invention relates to a novel bracket assembly for producing tooth movement in the treatment of dental malocclusions. A dual bracket system includes a primary and secondary bracket. An archwire is received in the secondary bracket. The primary bracket is attached to the tooth and the secondary bracket engages the primary bracket, thereby holding the secondary bracket and the archwire in place. Various configurations of the secondary bracket can be used with the primary bracket for producing desired tooth movements. A novel pin and ligature assembly can be used with the bracket assembly or a conventional bracket.

Abstract: In order to so improve a metallic orthodontic aid having an optically visible marking area that the marking is easy to apply and is also visible up to a definable number of recycling process cycles, it is proposed that the marking area be a surface of an additionally produced layer with a remelt structure.

Abstract: A self-locking orthodontic bracket having a body with an archwire slot, and a locking slide member which is movable to open and close the slot. Archwire retention is provided by the slide member without use of conventional ligatures or tie wires. A resilient member is provided to retain the slide member in either the open or closed position, while preventing excessive sliding movement which could disengage the slide member from the bracket body.

Abstract: This invention relates to an orthodontic bracket for retaining a wire arch for tooth correction, which bracket comprises a base part having single or double wings and are formed with an open-ended and open-topped transverse groove for receiving the wire arch, and also comprises a footpad secured to the base part and adapted to be adhesively joined to an adjacent tooth surface. A groove is formed in the base part and/or in the pad and extends on the underside thereof or particularly a tunnel is formed in said base part and/or pad, which groove or tunnel extends in the direction in which the wings are spaced apart and serves to anchor partial wire arches.

Abstract: An orthodontic appliance such as a bracket is made of a polymeric material with reinforcing fiber structure embedded in the polymeric material. The reinforcing fiber structure includes relatively long filaments that extend about the perimeter of the bracket including the periphery of an archwire slot. In one embodiment, a method for making the bracket includes the steps of placing a tubular fiber preform in a mold assembly in an orientation aligned with a mesial-distal axis of the resultant bracket, and then closing the mold assembly in directions toward a central axis of the preform.

Abstract: The invention relates to a fixed lingual orthodontic appliance which, when installed on the patient, rests on the lingual surface of the teeth and the palatine and inferior alveolar mucous membranes, comprising a base and support element (1) destined to be rested on the oral mucous membrane, substantially horseshoe-conformed, a plurality of elastic connecting elements (2) made by the modelling of a steel wire or similar with predetermined elastic characteristics, fixed at an end to the base and support element (1), and at the other of its ends on a respective bracket (3), the bracket or brackets (3) being made in synthetic resin and in a number which is equal to that of the teeth to be treated, and being conformed in such a way as to exhibit a concave face (7) which will be cemented on the equally concave lingual surface of the tooth, the other, convex, face (8) exposed to the oral cavity being superficially perfectly smooth and having a convexity which is equal to the development of the corresponding surface

Abstract: A cutout or dimple is provided in an orthodontic bracket and is sized to receive a projection of a measuring instrument to facilitate positioning of the bracket on a tooth. Preferably, the cutout is a conical dimple sized to receive the tip of a Boone gauge or other measuring instrument.

Abstract: An orthodontic bracket is provided for use with an arch wire to apply corrective forces to a tooth. The bracket includes a vertical member having a slot formed therein for receiving the arch wire and a wide base horizontal member connected to the vertical member. The vertical member is positioned gingivally with respect to the horizontal member. The horizontal member includes opposing first and second ends that extend away from the vertical member and define a pair of spaced-apart wire engaging points engageable with the arch wire during treatment.

Abstract: A teeth straightening bracket comprises a base plate, a wire support disposed on the base plate, and a wire passage groove formed in the wire support for causing a correcting wire to pass therethrough under sliding movement. At least one of pair of engaging fingers for a binding wire is disposed on both sides of the wire support excepting for both longitudinal ends thereof. Further engaging fingers are preferably disposed on both longitudinal ends of the wire support in perpendicular to the longitudinal direction.

Abstract: An orthodontic appliance has a tooth-abutting surface oriented at an acute angle relative to the base of an arch-wire slot. A lip bumper tube of the appliance is reverse offset relative to the base of the arch-wire slot to obtain more accurate manipulation of the force and torque vectors applied to the tooth. The angle of the base also reduces occlusal interference by gingivally inclining the lip bumper. Wedge-shaped occlusal tie wings further reduce occlusal interference. An auxiliary hook of the appliance is shaped so that its extension in the buccal direction is less than that of the lip bumper tube to reduce patient irritation and discomfort.

Abstract: An orthodontic bracket is provided for use with an arch wire. The bracket includes a bracket main member having upper, middle and lower portions. The middle portion includes a slot formed therein for receiving the arch wire. Wings are formed on the upper and lower portions of the bracket main member for enabling a ligature to be tied therewith to secure the arch wire in place in the slot. Engaging portions are formed on the wings for enabling the ligature to be held in a tied state on the wings such that the ligature avoids pressured contact with the arch wire, thereby allowing the bracket to move smoothly along the arch wire during orthodontic treatment requiring such movement.

Abstract: A supplementary device for use in a device for correcting teeth irregularities includes a bracket having a slit with a T-shaped section and a wire to be inserted into the slit and engaged with the bracket. The wire has an elongated projection, and the supplementary device includes a wire engaging slit having substantially the same shape as the slit in the bracket. At least one protrusion is adapted for engaging a resilient band, and the bracket is slidable along the wire.

Abstract: The invention discloses a metal injected molded (MIM) orthodontic bracket that includes a plurality of raised posts buccolingually extending from a tooth abutting surface. Each post includes a root section having a base integrally formed with the tooth abutting surface and a apex section buccolingually extending from the root section. The apex section terminates a sharp, continuous parameter edge that was originally, smaller in all directions than the root section. However, in accordance with the invention, further cold working of such edges occurs whereby each edge is easily worked--at ambient temperatures--into a mushroom-shaped button having a worked edge larger in all directions than its associated root section.

Abstract: An ivory-colored zirconia sintered body having high toughness, high mechanical strength and aesthetical excellence, a process for its production and its use as a bracket for orthodontic application; the sintered body containing stabilizer-containing ZrO.sub.2 as a main component, and also containing, based on the stabilizer-containing ZrO.sub.2, 0.05 to 1.0 mol % of Er.sub.2 O.sub.3, 0.0001 to 0.05 mol % of Pr.sub.6 O.sub.11, 0.0001 to 0.3 mol % of Fe.sub.2 O.sub.3 and 0.05 to 0.

Abstract: An orthodontic bracket made of a partially crystallized amorphous glass material and method for making same. The orthodontic bracket has a thin compressive outer crystalline layer.

Abstract: A dental bracket is described which comprises a non-metallic bracket, typically formed from a transparent crystalline alumina. To this non-metallic bracket there is bound a stainless steel metallic foil mesh pad which is adhesively connected to the dental bracket. The foil mesh pad can thereafter be bound to the tooth using typical adhesives, and without worrying of bonding or debonding associated with ceramic or crystallic brackets. If desired, one can make the stainless steel pad aesthetically pleasing, to obtain further aesthetic benefits from this device.

Abstract: An orthodontic bracket and method of making same. The bracket comprises a main body portion made of a rigid plastic material having a filler for improved strength. The bracket further includes a rigid reinforcement molded into the body for strengthening the archwire slot. The method comprises forming at least one insert in a blank sheet of metal, forming the insert to its final configuration, placing the insert in a mold cavity and forming the bracket around the insert, removing the bracket from the mold and separating the bracket from the sheet of metal at a predetermined point.

Abstract: A metal bracket is provided with a covering formed for dental porcelain. The porcelain is placed on the sides and buccal surfaces of the bracket and provides for an aesthetic appearance to the bracket. However, the high strength is provided by the metal. The exposed metallic surfaces of the archwire slot and base enable the bracket to function in the manner of a metal bracket. This porcelain fused to metal bracket enables the user to derive the best possible functions of both types of materials.

Abstract: A dental orthodontic bracket is made from a body of a ceramic, a polymer or a composite thereof, the body having a longitudinal slot for an archwire formed by opposed upstanding wall portions on a base. The wall portions each have a pair of lateral wings at opposite end portions of the slot and an intermediate portion joining the wings. The wings have convex outer surfaces smoothly joined with a concave outer surface of the intermediate portion thereby forming a sinusoidal outline. The bottom surfaces of the wings form a clearance space with the base for a ligature wire clamp. The bottom of the slot is located above the bottom surfaces of the wings and the lowest point of the wings is at their tips. The upper surface of the wings is convex and the bottom surface concave.

Abstract: Shaped bodies of transparent, polycrystalline alumina are produced in a green body is formed in a first step using pure, fine-grained alumina wherein, in the given circumstances, the green body is freed from the auxiliary agents used int he production by burning-out in a second step, wherein pretreat is carried out as a subsequent third step, and wherein the compaction to transparent, polycrystalline alumina takes place in a fourth step, in order to render the method more economical, it is suggested that the pretreatment be carried out in such a way as to produce a closed surface on the shaped body and that pressure from all sides at elevated temperature be used to compact the shaped body in the fourth step.

Abstract: An improved orthodontic appliance of the twin bracket edgewise type in which a pair of spaced apart brackets are affixed to a pad member adapted for attachment to the surface of a tooth, each of the brackets including a base portion resting against the pad member, upper and lower wing portions projecting outwardly from the base portion and an outwardly opening slot of predetermined height between the upper and lower wing portions for receiving an arch wire in cooperation therewith, the height of the arch wire receiving slot of one of the brackets being greater than the arch wire receiving slot of the other.

Abstract: In order to so improve a metallic orthodontic aid having an optically visible marking area that the marking is easy to apply and is also visible up to a definable number of recycling process cycles, it is proposed that the marking area be a surface of an additionally produced layer with a remelt structure.

Abstract: By using titanium, titanium based alloys, or related metals or alloys, an orthodontic bracket can be manufactured which is lighter and stronger than any conventional type of bracket made of stainless steels, plastics and even ceramics. Ti based brackets have shown excellent corrosion resistance and possess good biocompatibility. Surface treatments including nitriding, diamond coating, pre-oxidation or shot-peening on the slot bottom surface of such brackets reduce the friction coefficient against the orthodontic archwire. Furthermore, the bonding strength may be enhanced by shot-peening, ion beam etching or reactive ion etching on the tooth contact surface of the base portion of the bracket.

Abstract: A support plate for an orthodontic anchorage fitting designed to be removably attached to a dental crown analog. The plate has curved slots at each end for passage of screws used to attach it to a sidewall of the analog, so that the plate can be adjusted on the sidewall around an axis that is between the slots. Pivot means can be provided in the sidewall and the plate for locating the plate pivotally on the sidewall. The plate is made of a material, such as stainless steel, to which an orthodontic anchorage fitting may be attached by welding.

Abstract: This invention provides a transparent aluminum magnesium oxynitride ceramic, wherein greater than 0.5 weight percent of the total ceramic composition is magnesium oxide. The ceramic article of the present invention is useful in applications where it is desirable to have a transparent ceramic including, for example, in orthodontic brackets, ferrules, and gas tight envelopes.

Abstract: An orthodontic bracket is provided for use with an arch wire to apply corrective forces on a tooth. The orthodontic bracket includes a pair of spaced apart, generally vertically oriented tie-wings for attachment of a force transmitting member or a fastening member to either or both of the tie-wings. Each of the tie-wings includes a slot therein for receiving the arch wire. The orthodontic bracket also includes a pair of extension members engageable with the arch wire to control rotation of the tooth. One of the extension members projects mesially from the bracket and the other extension member projects distally from the bracket.

Abstract: A dental article is coated with a hard carbon coating of polycrystalline diamond, diamond-like amorphous hydrogen-free carbon, diamond-like hydrogenated amorphous carbon, or combinations thereof. The hard carbon coating presents a barrier to nickel and chromium that might otherwise diffuse from an underlying metal substrate, and as such is useful for patients exhibiting sensitivity to nickel and chromium.

Abstract: Disclosed herein are an orthodontic bracket which comprises a photopolymerization-type adhesive layered and fixed on a back surface portion of a bracket main body made of a light-transmitting material, a kit which comprises the bracket hermetically sealed in a light-shielding container, and a process for the adhesion of the bracket.

Abstract: A dental bracket with a T-shaped archwire as described. In addition, it is possible to have a pair of tie wings which lock around the archwire so that the size of the archwire can be reduced, as well as the size of the dental bracket.

Abstract: An orthodontic appliance including a series of orthodontic brackets configured to be secured to the teeth of patient, the brackets having slots for supporting an orthodontic arch wire, and an orthodontic arch wire extending through the slots. The orthodontic arch wire is arch-shaped and includes posterior segments and an anterior segment connecting the posterior segments. Either the anterior segment, or the entire arch wire, has a non-symmetrical, trapezoidal cross-section, and can be supported by bracket slots having either a rectangular or non-symmetrical trapezoidal shape.

Abstract: An orthodontic bracket has been designed which can be made of ceramic material. The bracket can be used for correcting Class II and Class III malocclusions without the use of a Kobiashi tie, ball hook, or power hook, which had previously been used to make such corrections. This invention, on the other hand, employs an integral hook design, which makes use of the same mechanics, but without requiring any brazing or welding of the hook to the body of the bracket.

Abstract: An edgewise bracket (10) is provided with notches (34, 36, 38 and 40) in wing tips (24, 25, 26 and 27), respectively. The notches (24, 25, 26 and 27) are generally concave and have a mesiodistal width slightly greater or slightly less than the thickness of an archwire retaining device (32) depending on whether the device (32) is a metallic wire or an elastomeric ligature. The archwire retaining device (32) is inserted into the notches (34, 36, 38, and 40) to retain an archwire (30) within a slot (28) which has a depth greater than a thickness of the archwire (30). The device (32) has selectively reduced undesired frictional contact with the archwire (30), and, therefore, frictional interference between the device (32) and the archwire (30), and the archwire (30) and the bracket (10) is reduced or eliminated.

Abstract: A new esthetic bracket protector is formed of a silicone material and can be placed over the orthodontic bracket to achieve the esthetic purpose. The protector is round-shaped, is hollow in the interior and has a covering. There is a hole in each side for the main wire to pass through and there is a slit from each hole to the base of the covering. In this manner, the protector may be easily pressed over the bracket and wire. It covers the bracket, prevents mucosal ulceration and caries and provides an esthetic appearance.

Abstract: Orthodontic brackets comprise a bracket body having a single centrally-disposed pair of gingivally-occlusially extending tie wings that protrude labially from the body and are embraced by a ligating loop to hold the bracket on the cooperating arch wire that passes through the arch wire slot, the slot thereby being of dual depth across the width of the bracket. The parts of the loop alongside the tie wings close the labial side of the slot but cannot engage a wire in the slot of smaller lingual-labial dimension than the slot, so that sliding friction between the wire and bracket is minimized. Such single central wings can be relatively wide in a small bracket, making it especially suited for production from ceramic materials. Another embodiment intended for manufacture from metal employs two mesially-distally spaced pairs of headed posts in place of the tie wings, each pair extending respectively from the gingival and the occlusal surface of the bracket body.

Abstract: A design and manufacturing process uses flat sheets with outline shapes cut into the metal to manufacture orthodontic parts in laminate form. These sheets are aligned and stacked together, tack welded and brazed together in a flat form or may be bent together and then brazed. The process may be used to produce either commonly used conventional orthodontic brackets or very complicated shapes required for difficult applications.

Abstract: A bracket for orthodontics having a bracket body made of a composite resin material and a thin layer of a synthetic resin material in a dental adhesive. The synthetic resin layer is laminated on the base surface of the bracket body in such a manner that the composite resin material of the bracket body and the synthetic resin of the thin layer are mingled with each other at the boundary therebetween. The thin resin layer is composed of polymethyl methacrylate having an average molecular weight of 1000,000 or less or a polymethacrylate copolymer.

Abstract: An orthodontic bracket made of a partially crystallized glass material and method for making same. The orthodontic bracket has a thin compressive outer crystalline layer.

Abstract: The invention relates to a bracket (1, 21) for an arch wire (6) for correcting malaligned teeth having a saucer-shaped base (2, 22) to be provided on a tooth, a bracket foot (3, 23) seated on the base, and a slot (5, 25) on the upper side of the bracket foot for integrating the arch wire (6). To obtain a small bracket and reduce the danger of the bracket being bitten off, in particular when the brackets are used for teeth in the lower jaw, the invention proposes providing one side wall (4, 24) of the bracket (1, 21), namely the side wall facing the masticatory surface, with a flat outside wall (4, 24) without protruding elements, at least in the area of the slot (5, 25). An apparatus for taking up an attachment aid can be formed in this outside wall, e.g. in the form of a lug (13) or a groove or channel (16) open toward the bracket foot.

Abstract: In an orthodontic appliance comprising a plurality of brackets for correcting misaligned teeth, each secured to a surface of a tooth and a wire for connecting the plurality of brackets to each other in the direction of a set of teeth, each bracket comprises a substrate to be attached at its one surface to the tooth surface and at least one wire support disposed on the other surface of the substrate and defining a groove recessed therein for passing the wire slidably along the direction of the set of teeth, in which the inner wall surface of the recessed groove is inwardly protruded convexly as a curved surface relative to the direction of passing the wire. An operation period required for correcting misaligned teeth can be shortened remarkably since the teeth can move smoothly owing to the reduced friction between the wire and the groove of the bracket.

Abstract: An orthodontic bracket having four tiewings includes a hook which is integrally connected to one of two gingival tiewings. The hook has a mesial notch and a distal notch to provide connection with an elastic member that extends in either direction. The hook also has a flat labial surface for reducing patient discomfort.

Abstract: An orthodontic bracket having a horizontal archwire slot and wire-engaging surfaces for use in any treatment technique and coacting with an archwire and force generating means to produce tooth movement through crown tipping and root uprighting actions and for defining predetermined tip values. The bracket includes pivot edges for permitting pivotal movement between the bracket and the archwire, and a stop for limiting over-root-uprighting. It may also have a stop for limiting over-crown-tipping.

Abstract: A dental cement having a composition consisting essentially of a hardening liquid, a hardening accelerator, wherein the hardening liquid consists essentially of carboxyl-modified silicone oil.

Abstract: An orthodontic bracket and method of making same wherein the bracket has at least one tie wing integrally formed with a base portion. In one form of the invention the bracket is provided with at least one longitudinally extending groove which extends into the base portion, the groove having at least a portion extending beyond at least a portion of the groove opening. Another aspect of the present invention is directed to a method of making an orthodontic bracket using only ultrasonic machining techniques.

Abstract: An orthodontic bracket for securing orthodontic appliances to a tooth and an associated fabricating method. The orthodontic bracket (10) generally comprises a body (18) fabricated of a high strength plastic material (22) filled with an oxide particulate filler (24). In certain alternate embodiments the body (18) is further strengthened by dispersing reinforcing fibers (32) in the plastic material (22). The body (18) in certain embodiments is coated with a layer of organo-functional silane (28) and/or a high strength plastic (30) so as to resist staining and/or abrasion. The method of the present invention generally comprises filling the plastic fabricating material (22) with the oxide filler (28) and/or reinforcing fibers and/or whiskers (32) and molding the composite material into the desired bracket body configuration. The body (18) can then be coated with the desired protective abrasion and stain resistant coating (30).

Abstract: An orthodontic bracket, a method of manufacture and method of installing the bracket. The bracket is provided with visually enhanced reference edges for assisting in alignment of the bracket with respect to the tooth.

Abstract: An orthodontic bracket having a base portion for attachment to a tooth. The base portion is provided with a substantially monolayer of substantially uniform sized particles. The particles may have a size in the range of 5 to 200 micron.

Abstract: A twin tie wing orthodontic bracket having a pair of substantially parallel spaced tie wings extending from a base portion adapted to be attached to a tooth, and a horizontally opening buccolabially extending archwire slot and cutouts at the mesial and distal sides of the bracket at the archwire slot and the buccolabial face which increases the interbracket distance and thereby increases the range of the archwire and decreases the force the archwire exerts on the brackets.

Abstract: An orthodontic bracket is made from crystalline alumina, preferably crystalline alpha-alumina. The bracket comprises a base member for attaching to a tooth and a body member extending from the base member. The body member includes walls that define an archwire groove. The walls comprise crystalline alumina. The bracket has sufficient strength to withstand normal torquing forces imparted by an archwire.

Abstract: An adjustable bracket assembly for use with an arch wire includes a base member, an attachment member, and means for movably associating the base member with the attachment member, whereby the attachment member is slidably received within the base member, whereby a variable sized arch wire receiving channel may be formed.