Tooth #3 Has a Class II Furcation Involvement on the Facial

Multiple Choice

Tooth #3 has a class II furcation involvement on the facial aspect. Of the instruments listed below, which would be the BEST choice for smoothing the roof of the furcation area?

A) Slim-diameter ultrasonic tip with a straight working end
B) Nabers diamond-coated file
C) Standard Gracey curet 11/12
D) Universal curet with an extended lower shank