Envelope flaps are used for which teeth?

• A. Incisors
• B. Molars
• C. Canines
• D. Premolars

Answer: (A)

Envelope flap is a periodontal flap design used to gain access to the root surfaces with minimal disturbance to the gingival architecture. It involves making crevicular incisions around a segment of teeth and reflecting a single piece of tissue without vertical releasing incisions, which helps preserve the interdental papilla and gingival margin. This approach provides good exposure of the labial surfaces of the front teeth while keeping aesthetics in the esthetic zone intact. For that reason, it is typically used on incisors. Posterior teeth—like canines, premolars, and molars—usually require other flap designs with releasing incisions to achieve the necessary access and visibility.