An instrument is applied to body tissue of a body part to produce vibration to thereby reduce pain of injection or other pain producing stimulus. The device has a frame, and a source of vibration connected to the frame. A removable tip is connectable to the frame which has a distal end that is connected to the source of vibration when the tip is connected to the frame, to thereby vibrate the distal end when the source of vibration is activated. At the distal end of the tip are mutually facing arms which define an opening between them. Each arm forms a projection which extends at an angle from the arm. The projections are shaped to fit the body part so that the arms and projections are sized and dimensioned to position, retain, and transmit vibration to the body part in a position proximate the opening.
