Abstract: An elastic band comprising a plurality of spaced elastic members and a pair of flexible sheet materials on opposed sides of the elastic members, the elastic members being secured in a stretched position to each of said flexible sheet materials.

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: A container and cap assembly comprising a receiving container and a cap for engagement therewith. Engagement means is provided for quick assembly or disassembly of the cap from the container which comprises at least two recesses in the cylindrical outer wall of the lower end of the cap for receiving corresponding locking pins on the cylindrical wall of the container. The recesses each comprise a first receiving portion and a locking portion. The locking pins each have a substantially elongated outer configuration with respect to longitudinal axis of the container.

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: A container for thin glass plates having a base portion. The base portion is provided with a well having a substantially planar bottom surface at an angle with respect to the vertical plane of the glass slides.

Abstract: A polyvinylsolixane catalyst paste which comprises up to 20,000 ppm of finely divided platinum black which functions to adsorb hydrogen gas generated in the reaction of said catalyst paste when mixed with a base paste containing hydrofunctional polydimethylsiloxane, said base paste further containing a hydrophilic surfactant.