US Patent 9930294 Handpiece with built-in camera and dental treatment method using handpiece

A handpiece with a built-camera includes a micromotor-driven handpiece body which includes a cutting tool attached to a head portion thereof, a light receiving port at a position near the cutting tool, a grip portion detachably connected to the handpiece body and a color camera module which is stored inside the handpiece body. The handpiece with the built-in camera further includes an objective lens which faces the light receiving port and a rod fiber which is attached to an inner wall portion of the handpiece body with an incidence end of the rod fiber facing the objective lens and an exit end of the rod fiber facing a condensing lens unit.