For a coronal polish, use a ____________. a. high-speed handpiece ...

[ashley]

For a coronal polish, use a ____________.
 a. high-speed handpiece
  b. low-speed handpiece with a prophy angle attachment
  c. low-speed handpiece with no attachment
  d. any of the above

Question 2

Which of the following decreases the rate of abrasion?
  1 . Use of a dry abrasive.
  2 . Use a firm pressure.
  3 . Increase the speed of the handpiece.
  4 . Use a lot of abrasive material.
  5 . Use of a small grit abrasive material.
 a. 1, 2, 3, 4, 5
  b. 1, 2, 4, 5
  c. 5 only
  d. 1 only

[whitcassie]

Answer to Question 1

b
RATIONALE: For a coronal polish, use a low-speed handpiece with a prophy angle attachment.

Answer to Question 2

c
RATIONALE: Use of a small grit abrasive material decreases the rate of abrasion.