Fig. 2From: Versatility of the pedicled buccal fat pad flap for the management of oroantral fistula: a retrospective study of 25 casesThe three-layer technique using collar tape, a BFP, and a buccal advancement flap. a Pre-operative state. b Bony defect. c Collagen paper was applied on the bony defect. d Pedicled buccal fat pad was retracted. e Post-operative state, f 2 weeks after operationBack to article page