Flap Advancement Limitations — NDEB AFK MCQ
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Correct answer: B — Vestibular depth limited by muscle attachments and neurovascular structures
The depth of buccal advancement flap mobilisation is limited by several anatomical structures in the vestibular region: muscle attachments (mentalis, buccinator insertions), the mental nerve and foramen (in the premolar region), the infraorbital nerve (maxillary anterior), and the vestibular depth itself. A periosteal releasing incision at the base of the flap can gain additional advancement by releasing the periosteal constraint, but care must be taken to avoid damage to nerves and vessels.
Reference: Newman – Newman and Carranza's Clinical Periodontology, 13th ed., 2019