Fig. 3From: Palatal window osteotomy technique improves maxillary sinus augmentation in previously insufficient augmentation caseSinus bone augmentation with implant placement after palatal window osteotomy. After pala-crestal incision (a) and raising full-thickness flaps on the buccal and palatal sides of the alveolar ridge, palatal antrostomy is performed by a round bur (b). An implant was placed in optimal position after bone grafting in the palatal aspect of sinus cavity (c)Back to article page