Abstract: The stomatological tip comprises a head accommodating a means for holding a stomatological instrument, a tip body having a socket to receive the head. The socket to receive the head is capable of providing a complete revolution of the head. The head is provided with a source of optic radiation. The guard is made fast on a part of the head outer surface. The electric power source having a positive and a negative lead appears as a twin power cord. The source of optic radiation appears as at least one light guide electrically connected to the power supply source via electrical connectors accommodated in the body and head, and the electric conductor enclosed in the conduit provided in the body and in the cylinder-shaped groove and circular groove. The electrical connector accommodated in the head appears as a plug-and-receptacle assembly.