Abstract: A container adapted to contain and dispense a product. Said container comprises a hollow body, a filling opening, a dispensing opening, a valve and a flexible and resilient support means for said valve. Said flexible and resilient support means urges said valve against said dispensing opening, achieving a leak-tight engagement between said valve and said dispensing opening. Said flexible and resilient support means can be resiliently deformed by an external force acting on said valve whereby said leak-tight engagement between said valve and said dispensing opening is disengaged, allowing said contained product to be spread by said valve. Said flexible and resilient support means comprises a housing which fits the container and defines said dispensing opening at one extremity. Said housing comprising a resiliently deformable means urging said valve against said dispensing opening to achieve said leak-tight engagement.

Abstract: An oral orthosis includes a holder in the shape of a mouthpiece, including a curved arcuate trough-like upper section which receives a formable material. The formable material does not occupy the entire trough but rather includes voids between the formable material and the inner surfaces of trough of the holder to allow expansion of the formable material into the voids during the molding process when tooth pressure is placed on the formable material. This design results in elimination of the excess formable material which otherwise would require removal by trimming. Additionally, the formable material is placed in the trough in a configuration which includes indexing indentations along the centerline of the material, such that, during the molding process, the mouthpiece containing the formable material is easily centered along the edges of the user's teeth to provide a precise fitting.