What is moving an instrument in order to produce a stroke?
  1. Adaptation
  2. Angulation
  3. Activation
  4. Sickle scaler
Explanation
Answer - C - Activation is moving an instrument in order to produce a stroke. It is the action of an instrument in the performance of the task for which it was designed. Hand-forearm activation is made by rotating the hand and forearm as a unit to provide the power for an instrumentation stroke. Digital activation is created by flexing the thumb, index, and middle fingers to move the instrument.
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