Abstract: A dental light curing device comprising a casing having a handle integrally formed therewith and extending therefrom to a lower end. The casing is defined by a front cover and a rear casing body. The rear casing body defines an interior space inside which a bulb, serving as a light source, and a reflector substantially concentrically surrounding the bulb are fixed. An optical fiber is mounted to the cover to be positionable in the proximity of the bulb for receiving and guiding light generated from the bulb. A pivotal connection is provided between the front cover and the rear casing body at the lower end of the handle that is far away from the bulb to allow the front cover to be movable relative to the rear casing body between an open position for replacement of the bulb and a closed position.