ADEX Periodontal Concepts 2

Question 1

Which periodontal fiber group runs from the cementum to the alveolar bone in an oblique direction, resisting occlusal forces?

Accepted Answer

Oblique fibers

Answer

Oblique fibers are the most numerous PDL fiber group and primarily resist occlusal (vertical) forces by transmitting them obliquely to the bone.

Question 2

A patient presents with generalized 6-7 mm probing depths, radiographic bone loss, and a history of poor systemic control of Type 2 diabetes. How does poorly controlled diabetes most directly affect periodontal disease?

Accepted Answer

Impairs neutrophil chemotaxis and phagocytosis

Answer

Poorly controlled diabetes impairs neutrophil function including chemotaxis and phagocytosis, reducing the host's ability to combat periodontal pathogens.

Question 3

What is the term for the distance from the cementoenamel junction (CEJ) to the base of the sulcus/pocket measured clinically?

Accepted Answer

Attachment level

Answer

Clinical attachment level (CAL) is measured from the CEJ to the base of the pocket and reflects true tissue destruction regardless of gingival position.

Question 4

Which cell is the primary mediator of alveolar bone resorption in periodontal disease?

Accepted Answer

Osteoclast

Answer

Osteoclasts resorb mineralized bone tissue and are the primary cells responsible for the alveolar bone loss seen in periodontitis.

Question 5

Stage III Grade C periodontitis is most strongly associated with which systemic risk modifier?

Accepted Answer

Poorly controlled diabetes (HbA1c ≥7%)

Answer

Grade C periodontitis indicates rapid progression and is strongly associated with poorly controlled diabetes (HbA1c ≥7%) as a systemic risk factor per the 2017 classification.

ADEX - Dental Hygiene Exam Practice Test

ADEX - Dental Hygiene Exam Practice Test

ADEX Periodontal Concepts 2