ADEX Periodontal Instrumentation and Care 3

Question 1

Which explorer tip design is MOST effective for detecting subgingival calculus in narrow, deep periodontal pockets?

Accepted Answer

ODU 11/12

Answer

The ODU 11/12 explorer has a long, angled shank that provides tactile access to subgingival deposits in deep pockets.

Question 2

Root planing differs from scaling primarily in that root planing:

Accepted Answer

Smooths and detoxifies the cementum surface

Answer

Root planing aims to create a smooth, biologically compatible root surface by removing embedded toxins and altered cementum.

Question 3

During periodontal instrumentation, a 'walking stroke' with a probe is used to:

Accepted Answer

Systematically assess the full circumference of the pocket depth

Answer

The walking stroke moves the probe apically then advances 1–2 mm around the tooth to map the entire sulcus floor.

Question 4

The 'toe-third' of a curette blade should be adapted against the tooth surface to avoid tissue trauma. How much of the blade should contact the tooth?

Accepted Answer

The terminal 1–2 mm (toe-third)

Answer

Adapting only the toe-third of the curette ensures the sharp toe does not lacerate adjacent soft tissue.

Question 5

Which condition is an absolute contraindication to the use of ultrasonic instrumentation?

Accepted Answer

Presence of a first-generation demand-type cardiac pacemaker

Answer

First-generation demand-type pacemakers can be disrupted by the electromagnetic field of magnetostrictive ultrasonic scalers.

ADEX - Dental Hygiene Exam Practice Test

ADEX - Dental Hygiene Exam Practice Test

ADEX Periodontal Instrumentation and Care 3