ADEX Periodontal Instrumentation and Care 4

Question 1

Subgingival air polishing with glycine or erythritol powder is MOST indicated for:

Accepted Answer

Biofilm disruption and maintenance debridement in periodontal pockets

Answer

Low-abrasive amino acid powders like glycine are effective and gentle for biofilm removal during supportive periodontal therapy.

Question 2

A patient presents with 6 mm pockets on the mesial surfaces of molars with bleeding on probing. The tissue appears fibrotic. Which statement is TRUE regarding instrumentation?

Accepted Answer

Fibrotic tissue may mask true pocket depth and resist retraction, complicating instrument access

Answer

Fibrotic tissue is dense and firm, which can limit visibility and instrument access while still harboring pathogenic biofilm.

Question 3

Which instrument is BEST suited for removing heavy ledge-like supragingival calculus from the facial surface of mandibular anterior teeth?

Accepted Answer

Sickle scaler (H6/H7)

Answer

The sickle scaler's straight cutting edges are effective for breaking away large supragingival calculus deposits on smooth surfaces.

Question 4

When using a piezoelectric ultrasonic scaler, the clinician should use which tip motion for most efficient calculus removal?

Accepted Answer

Overlapping vertical, horizontal, and oblique strokes with light pressure

Answer

Overlapping multi-directional strokes with light pressure maximize the cavitation effect and tip efficiency of piezoelectric units.

Question 5

Sharpening an instrument to restore its cutting edge is indicated when:

Accepted Answer

The instrument appears visually dull or reflects light along the edge

Answer

A sharp edge will not reflect light; a dull edge creates a rounded, reflective surface visible under light.

ADEX - Dental Hygiene Exam Practice Test

ADEX - Dental Hygiene Exam Practice Test

ADEX Periodontal Instrumentation and Care 4