CPT CPT Periodontal Instrumentation & Scaling Techniques 2

Question 1

How does the working end of a Gracey curette differ from a universal curette?

Accepted Answer

It has one cutting edge offset at 70 degrees

Answer

Gracey curettes are area-specific with one cutting edge offset at 70 degrees, while universal curettes have two usable cutting edges.

Question 2

What is the primary function of the terminal shank on a periodontal instrument?

Accepted Answer

Connects to the working end and indicates blade angulation

Answer

The terminal shank connects to the working end and its orientation helps the clinician determine correct blade-to-tooth angulation.

Question 3

When using an ultrasonic scaler subgingivally, which power setting is recommended?

Accepted Answer

Low power to reduce heat and tissue trauma

Answer

Low power settings are recommended for subgingival ultrasonic scaling to minimize heat generation and tissue trauma.

Question 4

Which instrument is specifically designed for subgingival calculus detection?

Accepted Answer

11/12 explorer (pigtail)

Answer

The 11/12 explorer (pigtail) is specifically designed for subgingival calculus detection due to its curved working end.

Question 5

The Nabers probe (furcation probe) is used to:

Accepted Answer

Assess furcation involvement and horizontal bone loss between roots

Answer

The Nabers probe's curved design allows assessment of the degree of furcation involvement and extent of horizontal bone loss.

CPT - Certified Periodontal Therapist Practice Test