This paper is based upon 23 bone graftings in 22 cases. Ages of 22 cases are 10 cases of 1st decade, 7 of 2nd decade, 2 of 3rd decade, 2 of 4th decade and a case of 5th decade.
Freeze-dried bone graft was performed for the following conditions: Bone cyst (9cases), Fibrous dysplasia (5 cases), Giant cell tumor (2 cases) and others. The evaluation of the result was made by recognition of remodelling namely, resorption and new bone formation on roentgenogram.
All cases were found to be remodelled to some degree respectively, but saying to remodelling rate, cancellous bone graft was superior to cortical and massive bone graft. However, even the segmental, cortical and massive bone grafts were moderately remodelled within one year. Loss of bone tissue was occurred in 4 cases in the site where graft was united to bed. It may be due to incomplete inmobilization.
