A hand-held, dental instrument designed for tightening a matrix band around a tooth that is being prepared for a dental restoration. It is a rod-like device, typically designed with a manually controlled rotating action at its distal end for insertion into ...
A hand-held, manual, tube-like surgical instrument with a right-angled handle designed to apply a rotational force that opposes the directional force of torque when tightening (locking) a screw or screw head setscrew with a screwdriver, inserted down the in...