The most varied category of rotary instruments is:

Question

Quizplus · Accepted Answer

Abrasive rotary instruments are the most varied of the rotary instruments,ranging in shape from discs and stones to points and strips.
The diamond rotary instruments have a variety of shapes and sizes,but all of them have diamonds embedded on a metal base.
Laboratory burs resemble restorative burs,but they have larger heads and longer shanks.
Carbide burs have the same basic shape but different cutting head designs.

The Most Varied Category of Rotary Instruments Is