イヌ頭蓋骨モデルを用いた仮骨延長法に関する実験的研究

扁平骨の垂直移動について

抄録

The purpose of this study was to investigate the possibility of perpendicular tabular bone distraction using osseointegrated implants in dog calvarial model. Nine adult mongrel dogs were used for this study. After insertion of three pure titanium implants in calvarial bone along the sagittal suture, connection of the distraction device and round shape osteotomy were performed. After allowing soft tissue to heal for 7 days, perpendicular distraction was started at the rate of 0.5 mm per day up to 7 mm. Experimental subjects were sacrificed at 2, 4 and 6 weeks after distraction. Radiographic and histologic examinations showed that perpendicular calvarial bone distraction was successfully achieved. The distraction gap was replaced by newly-formed bone. The implants remained stable without falling or mobility during distraction or the fixation period.
The results of this study suggested that tabular bone deformity in the maxillofacial region can be treated perpendicularly by distraction osteogenesis using osseointegrated implants.