source through the syringe and out of the nozzle 22 to irradiate the mouth cavity and cure the light curable resin composite as illustrated in the fig2 the dental syringe may be connected to a supply hose 13 from the instrument delivery system by a coupling means the coupling means is associated with a lower portion of the syringe body 10 for detachably connecting the syringe to the supply hose 13 of an external instrument delivery system not shown the coupling means or u201c quick disconnect u201d is comprised of a mount 94 positioned within a lower end of the grip portion 12 for receiving the connector 14 as shown in fig3 the connector 14 includes an air conduit 100 water conduit 101 and a power conduit 102 for conveying air water and power from an external instrument delivery system and through conduits that are positioned to align with the air and water tubing and electrical conduits in the syringe when the male end of the connector 14 is inserted into a female member associated with the syringe body 10 conventional connectors typically include a ball detent mechanism positioned around the periphery of an intermediate portion of the connector for releasably securing the connector and the syringe fig3 depicts a cross sectional view of the connector taken along lines 3 u2014 3 and portrays a conventional four hole connector conventional connectors include an alignment means not shown comprised of grooves and.