Dental handpiece

Abstract

A dental handpiece includes a bur sleeve that detachably holds a dental treatment tool and a head portion configured to rotationally drives the bur sleeve about a central axis of a dental treatment tool. The bur sleeve is rotatably supported in a housing of the head portion via a rolling bearing. The rolling bearing includes an inner ring that supports the bur sleeve, an outer ring that is fixed to the housing, and a plurality of rolling elements disposed between the inner ring and the outer ring. A flow path of a cooling medium that communicates in an axial direction is provided on an outer circumferential surface of the outer ring or inside the outer ring.

Dependencies are inferred from the claim text.