contraangle

con·tra·an·gle

(kon'tră-ang'gil),
1. One of the double or triple angles in the shank of an instrument by means of which the cutting edge or point is brought into the axis of the handle.
2. An extension piece added to the end of a dental handpiece, which, through a set of bevel gears, changes the angle of the axis of rotation of the bur in relation to the axis of the handpiece.

con·tra·an·gle

(kontră-ang-gĕl)
1. One of the double or triple angles in the shank of an instrument by means of which the cutting edge or point is brought into the axis of the handle.
2. An extension piece added to the end of a dental handpiece which, through a set of bevel gears, changes the angle of the axis of rotation of the bur in relation to the axis of the handpiece.

con·tra·an·gle

(kontră-ang-gĕl)
1. One of the double or triple angles in the shank of a dental instrument by means of which the cutting edge or point is brought into the axis of the handle.
2. Extension piece added to end of a dental handpiece, which, through a set of bevel gears, changes angle of axis of rotation of bur in relation to axis of handpiece.