ABP Disease Classification 2 — Questions and Answers
Question 1: According to the 2017 World Workshop classification, which condition is classified as 'periodontal health on a reduced but stable periodontium'?
- Stage III periodontitis in remission after treatment (Correct answer)
- Gingivitis on a reduced periodontium in a non-periodontitis patient
- Stage I periodontitis with clinical attachment loss <2mm
- Plaque-induced gingivitis with no attachment loss
Correct answer: Stage III periodontitis in remission after treatment
A successfully treated periodontitis patient with no BOP and stable bone levels represents periodontal health on a reduced periodontium.
Question 2: Which of the following best describes a Stage IV periodontitis case?
- CAL 1-2mm with horizontal bone loss <15%
- CAL ≥5mm with complexity factors including masticatory dysfunction (Correct answer)
- CAL 3-4mm with bone loss in the coronal third
- CAL 2-3mm with furcation Class I involvement
Correct answer: CAL ≥5mm with complexity factors including masticatory dysfunction
Stage IV is the most severe stage and is distinguished by complexity factors that can lead to masticatory dysfunction, such as bite collapse or flaring.
Question 3: In the 2017 classification, necrotizing periodontal diseases are distinguished by which pathognomonic triad?
- Suppuration, furcation involvement, and mobility
- Papilla necrosis, bleeding, and pain (Correct answer)
- Deep pockets, bone loss, and recession
- Generalized BOP, CAL loss, and systemic involvement
Correct answer: Papilla necrosis, bleeding, and pain
Necrotizing periodontal diseases are characterized by the triad of necrosis of interdental papillae, bleeding, and pain.
Question 4: A patient has diabetes that is well-controlled. How does this affect the grading of their periodontitis?
- Upgrades to Grade C regardless of other findings
- Has no effect on grade assignment
- May modify Grade B to Grade C if HbA1c ≥7% (Correct answer)
- Automatically assigns Grade A
Correct answer: May modify Grade B to Grade C if HbA1c ≥7%
Well-controlled diabetes (HbA1c <7%) may still upgrade Grade B to Grade C as a grade-modifying risk factor.
Question 5: Which of the following is classified as a 'non-plaque-induced gingival condition' under the 2017 classification?
- Gingivitis associated with dental plaque only
- Gingival enlargement due to calcium channel blockers
- Desquamative gingivitis caused by mucous membrane pemphigoid (Correct answer)
- Drug-influenced gingival enlargement from phenytoin
Correct answer: Desquamative gingivitis caused by mucous membrane pemphigoid
Desquamative gingivitis from mucous membrane pemphigoid is a non-plaque-induced condition as it results from an immune-mediated disorder.
Question 6: Which staging criterion differentiates Stage II from Stage III periodontitis?
- Presence of furcation Class I vs Class II involvement
- CAL 1-2mm vs ≥3mm
- Bone loss confined to coronal vs extending to middle or apical third (Correct answer)
- Probing depths ≤4mm vs ≥5mm
Correct answer: Bone loss confined to coronal vs extending to middle or apical third
Stage III is distinguished from Stage II by bone loss extending to the middle or apical third of the root, among other complexity factors.
Question 7: Which term in the 2017 classification replaced the older term 'aggressive periodontitis'?
- Stage III, Grade C periodontitis (Correct answer)
- Necrotizing periodontitis
- Stage IV, Grade B periodontitis
- Periodontitis as a manifestation of systemic disease
Correct answer: Stage III, Grade C periodontitis
Rapidly progressive periodontitis formerly called 'aggressive periodontitis' is now captured within Stage III or IV, Grade C in the 2017 classification.
ABP Disease Classification 2
According to the 2017 World Workshop classification, which condition is classified as 'periodontal health on a reduced but stable periodontium'?