Fundamentals of Periodontal Instrumentation and Advanced Root Instrumentation 8th Edition Test Bank (Chapter 3, ISBN 9781284456745) – Verified 2025–2026 Study Material by Gehrig, Sroda & Saccuzzo

Subject: Module 03: Instrument Grasp

1. The part of the instrument labeled B on the illustration below is the _____.



A. handle
B. working end
C. shank
D. knurl
Answer: C
Subject: Module 03: Instrument Grasp

2. What is the function of the middle finger in the modified pen grasp?
A. To hold the instrument handle
B. To stabilize the hand in the mouth
C. To roll the instrument handle
D. To guide the working end and feel vibrations
Answer: D
Subject: Module 03: Instrument Grasp

3. What is the function of the ring finger in the modified pen grasp?




Copyright © 2016 by Jones & Bartlett Learning, LLC, an Ascend Learning Company 3-1

, A. To hold the instrument handle
B. To stabilize the hand in the mouth
C. To roll the instrument handle
D. To guide the working end and feel vibrations
Answer: B
Subject: Module 03: Instrument Grasp

4. What is the function of the index finger and thumb in the modified pen grasp?
A. To hold the instrument handle
B. To stabilize the hand in the mouth
C. To roll the instrument handle
D. To guide the working end and feel vibrations
Answer: A
Subject: Module 03: Instrument Grasp

5. What is the position of the thumb in the modified pen grasp?
A. Rests lightly on the instrument shank
B. Rests at or near the junction of the handle and the shank
C. Rests on a tooth surface
D. Rests on the working end
Answer: B




Copyright © 2016 by Jones & Bartlett Learning, LLC, an Ascend Learning Company 3-2