Fig. 1From: Evaluation of clinical outcomes of implants placed into the maxillary sinus with a perforated sinus membrane: a retrospective studySchematic drawing of sinus perforation repair using an absorbable membrane. a Procedure of making the lateral window. b Occurrence of perforation. c Widening of the window. d Repair of the perforated membrane with an absorbable collagen membrane. e Bone graft in the elevated sinus and simultaneous implant placementBack to article page