Practice Test Geeks(ABP) American Board of Periodontology Practice Test
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Surgical Procedures Flashcards

7 cards from real ABP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Surgical Procedures flashcards as text

  1. Platelet-rich fibrin (PRF) used as a surgical adjunct in periodontal procedures is prepared by centrifuging blood at approximately:

    Answer: 2700 rpm for 12 minutes

    PRF is typically prepared by centrifuging whole blood at approximately 2700 rpm for 12 minutes, which concentrates platelets and growth factors in a fibrin matrix without anticoagulants.

  2. In a coronally advanced flap (CAF) for root coverage, vertical releasing incisions should be placed:

    Answer: At least one tooth away from the recession defect

    Vertical releasing incisions placed at least one tooth distal to the recession ensure adequate blood supply to the flap and avoid tension at the coronal margin.

  3. The 'biologic width' violation most frequently results in which clinical complication?

    Answer: Alveolar bone loss and chronic gingival inflammation

    Encroachment on the biologic width leads to alveolar bone resorption and persistent gingival inflammation as the periodontium attempts to re-establish its biologic dimension.

  4. During an apically positioned flap combined with osseous surgery, the flap is positioned at which level relative to the alveolar crest?

    Answer: 1–2 mm apical to the crest

    Positioning the flap 1–2 mm apical to the alveolar crest after osseous surgery allows the tissue to heal at the level of the bone, reducing pocket depth.

  5. Which classification describes a furcation invasion where a probe can enter the furcation but does not pass through to the other side?

    Answer: Class II

    Hamp's Class II furcation involvement indicates horizontal loss of periodontal support exceeding one-third of the tooth width but without through-and-through penetration.

  6. The most critical factor determining long-term success of a pedicle flap (laterally positioned flap) is:

    Answer: Thickness of the donor gingiva (at least 1 mm)

    Adequate donor tissue thickness (≥1 mm) is essential to prevent necrosis of the pedicle flap and to ensure sufficient tissue volume over the recipient defect.

  7. Which bone morphology is considered the most challenging to treat with regenerative periodontal surgery?

    Answer: One-wall intrabony defect

    One-wall intrabony defects have the fewest osseous walls to provide cells and blood supply for regeneration, resulting in the poorest regenerative outcomes.