ADEX Periodontal Concepts 4

Question 1

Which of the following best describes the biologic width?

Accepted Answer

Combined length of junctional epithelium and supracrestal connective tissue attachment

Answer

Biologic width refers to the combined dimension of junctional epithelium (~1 mm) and supracrestal connective tissue attachment (~1 mm), totaling approximately 2 mm.

Question 2

A patient taking phenytoin (Dilantin) is most likely to exhibit which periodontal condition?

Accepted Answer

Gingival enlargement (overgrowth)

Answer

Phenytoin causes drug-induced gingival enlargement due to increased fibroblast proliferation and altered collagen metabolism.

Question 3

What is the role of matrix metalloproteinases (MMPs) in periodontal destruction?

Accepted Answer

They degrade collagen and extracellular matrix proteins in periodontal tissues

Answer

MMPs, particularly MMP-8 and MMP-13, degrade collagen and extracellular matrix components, contributing to connective tissue destruction in periodontitis.

Question 4

Necrotizing periodontal disease is characterized by all of the following EXCEPT:

Accepted Answer

Painless presentation

Answer

Necrotizing periodontal diseases (NUG/NUP) are characteristically painful; pain differentiates them from other forms of periodontal disease.

Question 5

Which radiographic bone pattern is characterized by bone loss that is NOT parallel to an imaginary line drawn between the CEJ of adjacent teeth?

Accepted Answer

Vertical (angular) bone loss

Answer

Vertical or angular bone loss occurs at an angle to the long axis of the tooth and is typically associated with intrabony defects.

ADEX - Dental Hygiene Exam Practice Test

ADEX - Dental Hygiene Exam Practice Test

ADEX Periodontal Concepts 4