ABP Evaluations 2

Question 1

When evaluating a patient for periodontal surgery, which radiographic feature most strongly contraindicates an osseous resective procedure?

Accepted Answer

Vertical bone defects exceeding 3 mm

Answer

Vertical (angular) bone defects are better managed with regenerative approaches rather than osseous resection, which would sacrifice additional bone.

Question 2

A patient presents with a probing depth of 5 mm and bleeding on probing at site #14 mesial. Radiographically, there is 2 mm of horizontal bone loss. What is the most accurate classification for this defect?

Accepted Answer

Stage II Grade B

Answer

Stage II is indicated by probing depths 4–5 mm with 15–33% bone loss, and Grade B reflects moderate rate of progression without systemic modifiers.

Question 3

Which clinical parameter is most predictive of tooth loss over time during periodontal maintenance evaluation?

Accepted Answer

Residual probing depth ≥6 mm after active therapy

Answer

Residual probing depths ≥6 mm after active periodontal therapy are the strongest clinical predictor of future attachment loss and tooth loss.

Question 4

During a re-evaluation 8 weeks after scaling and root planing, which finding would most indicate the need for surgical intervention?

Accepted Answer

Persistent probing depths of 6 mm with no attachment gain

Answer

Persistent deep pockets without clinical attachment gain after thorough non-surgical therapy indicate that surgical access is necessary.

Question 5

Which parameter is used in the 2017 AAP/EFP classification to distinguish generalized from localized periodontitis?

Accepted Answer

Number of teeth involved (more than 2 non-adjacent teeth)

Answer

Generalized periodontitis is defined as involvement of more than 2 non-adjacent teeth; localized involves ≤2 non-adjacent teeth or a molar-incisor pattern.

(ABP) American Board of Periodontology Practice Test

(ABP) American Board of Periodontology Practice Test

ABP Evaluations 2