A dental light irradiation device has a first light source for emitting blue light, a camera and at least a first detector. The device is operable in a camera mode in which the camera is activated and in a non-camera mode in which the camera is deactivated. In the non-camera mode a user input on the first detector activates the camera mode. The dental light irradiation device helps facilitating the proper curing of a dental material in a patient's mouth.
