Control release for a tool grip for a dental handpiece

In a dental handpiece including a main body, a central rotating spindle equipped with tool grip means adjacent a forward end portion and spring means for effecting axial movement of the spindle in an inward direction for actuating said tool grip means to provide a gripping function;

• the improvement comprising improved release means for moving the spindle outwardly against the bias of said spring means for deactivating said tool grip means wherein said release improved means comprises a unitary plate removably mounted in the main body, first and second levers pivotally mounted on opposite sides of the plate so as to be substantially positioned within the confines of said main body and having driving ends engageable with said spindle for moving the spindle axially outwardly of the main body in response to pivotal movement of said levers inwardly of said body by a user for effecting deactivation of said tool grip means, said first and second levers being on diametrically opposite sides of the axis of the hand instrument and being mounted for pivotal movement in a plane passing through the axis of the hand instrument.