The present invention relates to a device for scialytic articulated, comprising a camera (2) and of the lighting means (1) adapted to illuminate a patient's mouth. The articulated scialytic (10) according to the invention comprises means for determining the position of the patient's mouth and means for controlling the direction of illumination of the lighting means (1) as a function of the position of the mouth, determined by the means for determining the position of the patient's mouth, said control means being configured so that the lighting means (1) illuminate the patient's mouth of a continuous manner.