Abstract: This invention is directed to a plastic orthodontic bracket reinforced with a metal insert having rotation wings. The bracket includes a protrusion extending into the archwire slot and having an upper end elevated above the bottom wall of the archwire slot. The upper end of the protrusion is adapted to contact the underside of an orthodontic archwire located in the archwire slot and to support at least a portion of the archwire above the bottom wall of the archwire slot.

Abstract: A bracket having a closure slot extending through both sides of the bracket body across an archwire slot for a closure member to secure an archwire. The bracket body has an internal shoulder extending across one side of the closure slot. The closure member is a lengthwise-folded flat spring having a free end positioned and biased to engage the shoulder when closed, and including a ramp forming a cam at the distal end thereof. Pushing the closure member lengthwise in the closure slot with sufficient force depresses the free end to disengage it from the internal shoulder to slide the closure member to an open position. Intermediate retention ears are formed on the core of the closure member to engage opposite lateral sides of the closure slot when open. A bendable tab is formed in the bracket body to block the closure member from removal from one end of the closure slot after insertion therein. The bracket body has twin pairs of tie wings to provide dual modes of closure.

Abstract: A bracket having a closure slot extending through both sides of the bracket body across art archwire slot for a closure member to secure an archwire. The bracket body has an internal shoulder extending across one side of the closure slot. The closure member is a lengthwise-folded flat spring having a free end positioned and biased to engage the shoulder when closed, and including a ramp forming a cam at the distal end thereof. Pushing the closure member lengthwise in the closure slot with sufficient force depresses the free end to disengage it from the internal shoulder to slide the closure member to an open position. Intermediate retention ears are formed on the core of the closure member to engage opposite lateral sides of the closure slot when open. A bendable tab is formed in the bracket body to block the closure member from removal from one end of the closure slot after insertion therein. The bracket body has twin pairs of tie wings to provide dual modes of closure.

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: 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, 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 dispensing device for dispensing orthodontic appliances formed in an elastomeric strip of material. The device comprises a housing having a discharge opening and a guide bar adjacent thereto. A drive reel is provided for moving the strip around the guide bar is provided so as to present the orthodontic appliance for dispensing thereof.

Abstract: An orthodontic bracket and method of making same wherein the bracket has at least one tiewing integrally formed with a base portion. In one form of the invention the bracket is provbided 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. In another aspect of the present invention is directed to a method of making an orthodontic bracket using ultrasonic machining techniques.

Abstract: An orthodontic bracket and method of making same wherein the bracket has at least one tiewing 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. In another aspect of the present invention is directed to a method of making an orthodontic bracket using ultrasonic machining techniques.

Abstract: An orthodontic bracket and method of making same wherein the bracket has at least one tiewing 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 a least a portion of the groove opening. In another aspect of the present invention is directed to a method of making an orthodontic bracket using ultrasonic machining techniques.

Abstract: An orthodontic bracket and method of making same wherein the bracket has at least one tiewing 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. In another aspect of the present invention is directed to a method of making an orthodontic bracket using ultrasonic machining techniques.