Fig. 5From: Effects of different grafting materials on volumetric changes in the Schneiderian membrane following lateral maxillary sinus floor elevation: a preliminary studyThe coronal view of preoperative and postoperative maxillary sinuses grafted with deproteinized bovine bone material (A and B) and calcium phosphate (C and D). The membranes in the maxillary sinus floor and the infundibulum swell 3 days after lateral sinus floor elevation (B and D). The red arrow in (D) indicates ostial obstructionBack to article page