Abstract: A sanitizing, cleaning and deodorizing unit for evacuation system filter traps of the type used in dental evacuation suction systems comprises a housing bounded by a side wall having openings that provide fluid communication with the ambient atmosphere and a body of sanitizing, cleaning and deodorizing material situated in the interior space of the housing. The material-containing housing is situated in a conventional filter trap comprising a cup-shaped unit comprising a mesh screen bottom wall. As waste material is suctioned into the filter trap, it passes through openings in the side wall of the unit housing into contact with the body of sanitizing, cleaning and deodorizing material which releases upon contact.

Abstract: An amalgam carrier and dispenser constructed in a manner such that its effective life is at least about five times greater than that of conventional instruments. The amalgam carrier and dispenser includes a handle, a plunger element affixed to the handle having a plunger portion, and an open ended sleeve element having an internal bore formed therein in which the plunger portion is slideably located. According to the invention, the plunger portion has a terminal end region, preferably in the form of a tip portion, which is formed of a hard metallic material while the clearance between the plunger portion and the internal sleeve element bore is smaller relative to clearances provided in conventional instruments. By these provisions, the effects of abrasion of the surfaces of the plunger and associated components which would otherwise be caused by the action of the amalgam on these components is significantly reduced relative to conventional instruments.