Fig. 7
From: Decision-making in closure of oroantral communication and fistula
a Pre-operative X-ray. b Tooth 26. c Perforation of the Schneiderian membrane. d Perforation after elevating the Schneiderian membrane. e Covering the perforation with a collagen membrane and fibrin glue. f Augmentation and implant inserted. g Repositioning of the buccal bone. h Covering of the OAC with the BFP. i Post-operative X-ray vs 3 years post