ORE Part 2 Periodontology 1 — Questions and Answers
Question 1: According to the 2017 World Workshop classification, what differentiates Stage III from Stage IV periodontitis?
- Tooth loss due to periodontitis and masticatory dysfunction (Correct answer)
- Probing depth alone
- Radiographic bone loss extent
- Presence of furcation involvement
Correct answer: Tooth loss due to periodontitis and masticatory dysfunction
Stage IV periodontitis includes all Stage III features plus tooth loss attributable to periodontitis and evidence of masticatory dysfunction, indicating a more severe disease burden.
Question 2: What is the first-line active treatment for Stage II periodontitis according to current BSP guidelines?
- Cause-related therapy: oral hygiene instruction and subgingival debridement (Correct answer)
- Surgical pocket elimination
- Systemic antibiotics alone
- Referral to a periodontist immediately
Correct answer: Cause-related therapy: oral hygiene instruction and subgingival debridement
BSP guidelines prioritise non-surgical cause-related therapy, including thorough oral hygiene instruction and subgingival instrumentation, as the first step in managing Stage II periodontitis.
Question 3: Which systemic condition has the strongest evidence for bidirectional association with periodontitis?
- Type 2 diabetes mellitus (Correct answer)
- Hypertension
- Osteoporosis
- Anaemia
Correct answer: Type 2 diabetes mellitus
Type 2 diabetes and periodontitis have a well-evidenced bidirectional relationship; poor glycaemic control worsens periodontal disease and vice versa.
Question 4: In the 2017 periodontal classification, what does Grade C periodontitis indicate?
- Rapid progression with risk factors such as smoking or diabetes (Correct answer)
- Slow progression with no risk factors
- Moderate rate of progression
- Historical pattern of bone loss only
Correct answer: Rapid progression with risk factors such as smoking or diabetes
Grade C indicates rapid disease progression, often associated with risk factors such as heavy smoking (≥10 cigarettes/day) or poorly controlled diabetes (HbA1c ≥7%).
Question 5: What is the significance of a bleeding on probing (BOP) score above 25% during supportive periodontal therapy?
- Indicates unresolved inflammation and increased risk of disease progression (Correct answer)
- Is within normal limits
- Suggests gingival overgrowth
- Indicates successful treatment
Correct answer: Indicates unresolved inflammation and increased risk of disease progression
A BOP score above 25% during supportive care indicates persistent gingival inflammation, a predictor of further attachment loss and need for treatment modification.
Question 6: Which furcation classification describes a probe passing completely through a furcation (through and through)?
- Class III (Hamp) (Correct answer)
- Class I
- Class II
- Class IV
Correct answer: Class III (Hamp)
A Class III furcation involvement (Hamp classification) means the probe passes completely through the furcation from one side to the other.
ORE Part 2 Periodontology 1
According to the 2017 World Workshop classification, what differentiates Stage III from Stage IV periodontitis?