California Registered Dental Assistant (RDA) Written Practice Exam

When assisting a left-handed dentist, the assistant should hold the oral evacuator tip with which hand?

1. Right hand

2. Left hand

3. Either hand, it does not matter

4. Both hands

The correct answer is: Left hand

When assisting a left-handed dentist, the assistant should hold the oral evacuator tip with the left hand. This positioning is essential because it allows for optimal access and efficiency during procedures. A left-handed dentist typically manipulates instruments with their left hand, meaning that the assistant's left hand can provide suction or retract tissue without interfering with the dentist's actions. Using the left hand ensures that the assistant can maintain a clear line of sight and keeps the workflow fluid during procedures since both the dentist's and the assistant's hands will be working on the same side. Holding the evacuator in the left hand also helps create a more ergonomic setup, minimizing the risk of awkward movements or obstruction, which can enhance patient comfort and procedural success.