Periodontics and Gum Disease Flashcards
7 cards from real AGD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Periodontics and Gum Disease flashcards as text
According to the 2017 World Workshop classification, Stage III periodontitis is distinguished from Stage II by:
Answer: Tooth loss due to periodontitis or complexity factors like vertical bone loss ≥33%
Stage III introduces complexity factors such as vertical bone loss ≥33%, furcation Class II or III, or tooth loss attributable to periodontitis, distinguishing it from Stage II.
Chlorhexidine gluconate reduces supragingival plaque primarily through which mechanism?
Answer: Disrupting bacterial cell membranes by binding to negatively charged sites
Chlorhexidine is a cationic bis-biguanide that binds to negatively charged bacterial cell membranes, causing cytoplasmic leakage and cell death.
A connective tissue graft placed under a coronally advanced flap is the gold standard for treating which type of gingival recession?
Answer: Miller Class I and Class II recession
Miller Class I and II recessions have intact interdental bone and tissue, allowing predictable complete root coverage with a subepithelial connective tissue graft under a coronally advanced flap.
Enamel matrix derivative (Emdogain) is derived from which biological source and promotes periodontal regeneration by:
Answer: Porcine enamel; mimicking cementogenesis and PDL fiber formation
Emdogain contains amelogenin proteins derived from developing porcine teeth that mimic the developmental process of cementum and PDL formation to promote periodontal regeneration.
Which systemic condition most directly impairs neutrophil chemotaxis and is strongly associated with early-onset severe periodontitis in children?
Answer: Papillon-Lefèvre syndrome
Papillon-Lefèvre syndrome involves mutations in cathepsin C causing severe neutrophil dysfunction and results in aggressive periodontal destruction and premature tooth loss in children.
The critical probing depth at which surgical treatment tends to result in better attachment level gains than non-surgical treatment is generally:
Answer: Greater than 5–6 mm
Evidence suggests that surgical therapy produces greater attachment level gains than non-surgical treatment at initial probing depths greater than 5–6 mm.
Which term describes the distance from the free gingival margin to the mucogingival junction?
Answer: Keratinized tissue width
The width of keratinized tissue is measured from the free gingival margin to the mucogingival junction, encompassing both free and attached gingiva.