Abstract: Unitary, self-regulating fluid dispensing cap for a dental unit water line treatment system having both a regulator valve and a relief valve located therein, and threads to receive a fluid bottle. The cap receives unregulated high pressure air of 50-80 psi and controls and reduces the pressure to about 30-35 psi with the adjustable regulator valve. The relief valve prevents the fluid bottle from bursting if over pressure of above about 35 psi, or other selected value, builds up in the bottle.

Abstract: An illumination system for use in combination with a fluid-driven, fiber optic dental handpiece having a proximal end with a light transmitting fiber optic rod and a plurality of fluid transmitting conduits extending therefrom in standardized configuration. The illumination system includes a control unit for supplying a regulated source of electric power, a air/water supply tube including a pair of electrical wires connected to the control unit for supplying fluid and electric power to the dental handpiece. Also included is a connector assembly for releaseably connecting the supply tube to the dental handpiece. The connector assembly includes a connector unit in the form of a generally cylindrical block of conductive material, preferably aluminum, which has a plurality of longitudinally oriented fluid transmitting channels extending therethrough and an axially aligned socket disposed along an outer periphery thereof which socket is sized for receiving a replaceable miniature halogen light bulb assembly.