A light curing device for curing dental materials, having a handpiece (14) and a base station (12), wherein the handpiece (14) includes a light source, a light-conducting rod (22), which is attached to the handpiece (14) in particular in a replaceable and detachable manner, and at least one sensor (30) which is positioned in the handpiece (14), wherein the light curing device (10) includes a control device (18) with at least one curing program for polymerizing the dental material. It is characterized in that a mirror (28) with a predetermined reflection parameter with a reflection value of more than 90% is provided, in particular at the base station (12) of the light curing device (10) or at the handpiece (14) of the light curing device (10), and in that the control device (18) includes a calibration program which can be actuated automatically or by user intervention when the light curing device (10) with the front end (24) of the light-conducting rod (22) is directed towards the mirror (28).
