CPT CPT Periodontal Instrumentation & Scaling Techniques

Question 1

Which Gracey curette is specifically designed for scaling the mesial surfaces of posterior teeth?

Accepted Answer

Gracey 11/12

Answer

Gracey 1/2

Answer

Gracey 13/14

Answer

Gracey 15/16

Question 2

What is the correct blade angulation of a curette to the tooth surface during active scaling?

Accepted Answer

45–90 degrees

Answer

0–45 degrees

Answer

90–135 degrees

Answer

135–180 degrees

Question 3

Which ultrasonic scaler insert is best suited for removing heavy supragingival calculus?

Accepted Answer

Beaver-tail insert

Answer

Thin perio insert

Answer

Right-angle insert

Answer

Furcation insert

Question 4

The modified pen grasp is preferred for periodontal instrumentation primarily because it:

Accepted Answer

Allows tactile sensitivity and precise control

Answer

Provides maximum lateral force

Answer

Prevents instrument slippage entirely

Answer

Reduces operator fatigue only

Question 5

What is the primary purpose of root planing compared to scaling?

Accepted Answer

Smooth the cementum and remove embedded endotoxins

Answer

Remove supragingival plaque

Answer

Polish the enamel surface

Answer

Remove inflamed gingival tissue

Question 6

Which stroke direction is most effective for subgingival calculus detection with an explorer?

Accepted Answer

Overlapping vertical and oblique strokes

Answer

Horizontal strokes only

Answer

Vertical strokes only

Answer

Circular strokes only