Abstract: A nonshrinkable, thermoplastic and injectable endodontic filling composition. The composition is a mixture of transpolyisoprene, either naturally produced as balata or gutta percha, or synthesized from isoprene, and a liquid castor ester platicizer. Alternatively, the mixture comprises transpolyisoprene, a liquid castor ester platicizer and castor oil or dimethyl silicon fluid lubricant. The mixture is preferably a combination of the transpolyisoprene, the liquid castor ester plasticizer and the liquid castor oil or dimethyl silicon fluid lubricant or both. The composition is compounded to form a highly thermoplastic material which is injectable at a clinically acceptable temperature with a manually operated injection system without shrinkage of the composition after placement in a dental root canal.

Abstract: The disclosure concerns a vehicle sun visor having a recess in one of its surfaces and a housing in the recess where the bottom of the housing is a trough having a detent in one of its side walls and carrying a light source and an operating switch for the light source. The top is a insert which includes a detent clip to clip it to the bottom part. An opening in the top part provides access to a switch for the light source in the bottom part. A mirror is in the top part. An illumination window in the top part permits light to exit from the bottom part. There may be a point radiator for light at the illumination window. A displaceable cover over the mirror is spring-biased to translate open over the surface of the mirror to expose the mirror. There may be a point radiator for light at the illumination window. A spring-loaded knob connected with the cover holds the same closed and when the knob is operated, it releases the cover to be biased open by the rubber band spring.

Abstract: A disc or other insert placed on the neck of a container provides a visible indication that the lid of the container had been removed or tampered with. An indicator is provided on the disc surfaces and it changes its character to provide its indication upon removal of the lid. For example, the indicator might be microencapsulated, and the microcapsules would be broken upon separation of the discs. Means in the lid rub the indicator for activating it. In a variant of this, the lid is transparent and permits viewing of the indicator through the lid. The disc may have a layer under the indicator for compensating for manufacturing tolerances.