What instrument is limited to use on the enamel surfaces and the outer surface of a calculus deposit?
  1. Universal curet
  2. Periodontal file
  3. Explorer
  4. Sickle scaler
Explanation
Answer - B - The periodontal file is limited to use on the enamel surfaces and the outer surface of a calculus deposit. The working-ends have straight cutting edges on a flat base. The instrument does not adapt well to curved tooth surfaces.
Was this helpful? Upvote!
Login to contribute your own answer or details