腸骨皮質海綿骨ブロックによる両側サイナスリフト法の評価

抄録

The maxillary sinus floor augmentation (sinus lift) was performed in posterior edentulous maxilla cases which had insufficient alveolar bone height. This article outline describes the surgery and surgical techniques for sinus lift harvesting from iliac bone to 7 patients (14 maxillary sinuses) of partially or totally edentulous bilateral-maxilla, and evidence of postoperative bone height using dental CT pictures. The surgical procedures were done at lateral approach method in the buccal site of bilateral-maxilla, and the left iliac crest was chosen as the donor site bone which had prepared corticocancellous bone block and particular bone. The block bone was inserted in the sinus maxilla and particular bone placed around the block bone.Six months after, alveolar bone height was investigated to measured by dental CT scan. The results were that the height was measured at 13.6～22.6 mm (mean:18.7mm) in individual sinus, and obtained adequate alveolar bone height for endosseus implant.6～8 months after, we performed implant placement, then the bone quality was felt to stiffness and firmness in bone graft regions. In postoperative observations, there appeared a few level of bone reducing, therefore all of the implants survived without morbidity in the observation periods. We considered that the iliac bone which prepared corticocancellous bone block was useful for bilateral maxilla sinus lift.