An Operator Is Seated, Scaling the Mandibular Arch with Elbows

Multiple Choice

An operator is seated, scaling the mandibular arch with elbows raised to his or her own shoulder level. Which of the following should be done?

A) Stand up and bend over to the level that will lower the arms below shoulder level.
B) Raise the client's chair higher to improve access.
C) Raise his or her shoulders higher than the elbows.
D) Adjust the client's chair to a lower working height.