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Triangular Flap Design — NDEB AFK MCQ

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EasyOral SurgeryTriangular Flap DesignNDEB AFK

The mucoperiosteal flap design that includes a vertical releasing incision extending from the sulcular incision to the alveolar mucosa is called which of the following?

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Correct answer: D — Triangular flap

A triangular flap has a sulcular (intrasulcular) incision along the gingival margin combined with a single vertical releasing incision extending from the sulcular incision into the alveolar mucosa. This provides a three-sided flap with two corners that can be reflected to expose the underlying bone. A trapezoidal flap has two vertical releasing incisions. An envelope flap has no vertical releasing incisions. Releasing incisions should be placed over bone (not over a root prominence) and avoid the mental foramen.

Reference: Hupp – Contemporary Oral and Maxillofacial Surgery, 7th ed., 2019