An oral irrigator includes a base having a pump mechanism, a reservoir housedwithin the base and fluidically connectedwith the pump mechanism. A handle (908) with a jet tip (910) is connected withan outlet from the pump mechanism to receivea pressurized fluid stream from the reservoir to direct a fluid at a surfaceinside an oral cavity. The oral irrigator also includesa radiant energy source (916) and delivery system (922) for directing radiantenergy at a surface inside an oral cavity.