DDS Periodontics 3

Question 1

Porphyromonas gingivalis is a key periodontal pathogen primarily because it:

Accepted Answer

Produces virulence factors including gingipains and lipopolysaccharides

Answer

Produces fluoride that damages enamel

Answer

Is a Gram-positive facultative aerobe

Answer

Is exclusively found in healthy gingival sulci

Question 2

Peri-implantitis is best described as:

Accepted Answer

An inflammatory condition causing progressive bone loss around a dental implant

Answer

Inflammation confined to peri-implant soft tissues only

Answer

Bone loss around an implant due solely to occlusal overload

Answer

A normal remodeling response after implant placement

Question 3

Acute necrotizing ulcerative gingivitis (ANUG) is characterized by all of the following EXCEPT:

Accepted Answer

Deep periodontal pocket formation

Answer

Painful punched-out ulcers of interdental papillae

Answer

Pseudomembrane formation on gingival surfaces

Answer

Characteristic fetid breath odor

Question 4

Miller's Class I gingival recession is defined as:

Accepted Answer

Recession not extending to or beyond the mucogingival junction with no interproximal bone or soft tissue loss

Answer

Recession extending to the mucogingival junction with no interproximal bone loss

Answer

Recession extending beyond the mucogingival junction with interproximal bone loss

Answer

Recession extending beyond the mucogingival junction without interproximal bone loss

Question 5

What is considered the primary etiologic factor initiating periodontal disease?

Accepted Answer

Bacterial dental plaque biofilm

Answer

Dental calculus (tartar)

Answer

Occlusal trauma

Answer

Malocclusion

Question 6

Crown lengthening surgery is most commonly indicated when:

Accepted Answer

There is insufficient supragingival tooth structure for an adequate restoration

Answer

A tooth requires orthodontic tooth movement

Answer

A tooth has Class II furcation involvement

Answer

A patient has drug-induced gingival overgrowth unrelated to restoration

Question 7

The periodontal 'red complex,' identified by Socransky et al., consists of which triad of organisms?

Accepted Answer

Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola

Answer

Aggregatibacter actinomycetemcomitans, Prevotella intermedia, Fusobacterium nucleatum

Answer

Streptococcus mutans, Lactobacillus acidophilus, Actinomyces viscosus

Answer

Bacteroides forsythus, Eikenella corrodens, Campylobacter rectus