Contra angle or straight hand piece assembly for dentistry apparatus, has hermetic container formed of packing with tubular envelope that is dimensioned and opened at one end for introducing insert equipped with protective sleeve

摘要

The assembly has a contra angle or a straight hand piece with an insert, and a hermetic container (12) formed of a packing with a tubular envelop. The envelope is dimensioned and opened at an end for introducing the insert equipped with a protective sleeve externally compacted or wound around itself with a closed bottom traversed by a bent curette (2). The envelope`s end is bordered by a flat collar for welding a membrane seal (11).