ABP Disease Classification 3 — Questions and Answers
Question 1: Under the 2017 classification, peri-implant mucositis is analogous to which periodontal condition?
- Stage I periodontitis
- Plaque-induced gingivitis (Correct answer)
- Necrotizing gingivitis
- Non-plaque-induced gingival condition
Correct answer: Plaque-induced gingivitis
Peri-implant mucositis, like gingivitis, is an inflammatory lesion of the soft tissues that is reversible with plaque control and does not involve bone loss.
Question 2: Which of the following represents a Grade A periodontitis patient?
- <2mm bone loss over 5 years and heavy smoker
- No evidence of bone loss over 5 years and no risk factors (Correct answer)
- Bone loss rate of 1mm over 5 years with HbA1c 8%
- Rapid bone loss rate of >2mm over 5 years
Correct answer: No evidence of bone loss over 5 years and no risk factors
Grade A is characterized by slow or no progression, no bone loss evidence over 5 years, and absence of risk factors like smoking or diabetes.
Question 3: Localized periodontitis is defined by what percentage of affected teeth in the 2017 classification?
- <10%
- <20%
- <30% (Correct answer)
- <40%
Correct answer: <30%
Periodontitis is classified as localized when <30% of teeth are affected and generalized when ≥30% of teeth show interdental CAL.
Question 4: Systemic diseases that have a major impact on periodontal tissues, such as Papillon-Lefèvre syndrome, are classified under which category in the 2017 framework?
- Grade C periodontitis
- Periodontitis as a direct manifestation of systemic disease (Correct answer)
- Stage IV periodontitis with systemic modifiers
- Non-plaque-induced gingival conditions
Correct answer: Periodontitis as a direct manifestation of systemic disease
Periodontitis as a manifestation of systemic disease is a separate category for conditions where the systemic disease is the primary driver of tissue destruction.
Question 5: In the 2017 classification, what distinguishes 'periodontitis' from 'periodontal manifestations of systemic disease'?
- Presence of systemic disease as a risk modifier vs primary etiologic factor (Correct answer)
- Bone loss pattern (horizontal vs vertical)
- Age of onset and disease rate
- Number of teeth involved
Correct answer: Presence of systemic disease as a risk modifier vs primary etiologic factor
In periodontitis, systemic conditions modify severity/progression, whereas in periodontal manifestations of systemic disease, the systemic condition is the primary etiologic driver.
Question 6: A patient presents with furcation Class III involvement on multiple molars but is otherwise healthy. What is the minimum stage this patient can be assigned?
- Stage I
- Stage II
- Stage III (Correct answer)
- Stage IV
Correct answer: Stage III
Furcation Class III involvement is a complexity factor that places the patient at minimum Stage III, regardless of other findings.
Question 7: Which finding would most strongly support upgrading a periodontitis patient from Grade B to Grade C?
- Probing depths averaging 5mm
- Bone loss exceeding 1mm per year documented radiographically (Correct answer)
- Furcation Class II involvement
- CAL of 5mm at multiple sites
Correct answer: Bone loss exceeding 1mm per year documented radiographically
Radiographic evidence of bone loss >1mm over 5 years (or >0.25mm/year) is primary evidence for Grade C rapid progression.
ABP Disease Classification 3
Under the 2017 classification, peri-implant mucositis is analogous to which periodontal condition?