Grant-in-Aid for Scientific Research (C) (2)

研究结果如下：采用自体骨（PCBM）和同种异体骨（组织库脱钙冻干骨）进行牙槽突裂二期植骨。术后随访1年，对两种材料进行临床、X线及病理学评价。临床上，两种移植材料均表现出良好的愈合状况，并通过咬合和牙科X线检查。2.三维CT观察，裂隙区有新生骨填充，新生骨来源于植骨材料。3.术后1年，移植骨周围有新骨形成，PCBM显示有多处新骨形成，证实两种材料均可作为牙槽突裂的移植材料。

The following research results were obtained :Secondary bone graft for alveolar cleft were performed by using autogenious bone(PCBM) and allograft(demineralized freeze-dried bone from tissue bank). After 1 year follow up both materials were evaluated clinically and radilgraphically and pathologically.As a result, 1. clinically both grafted materials showed excellent healing condition and by occlusal and dental radiographic examination. 2. By observing 3 dimentional CT, cleft area was filled with new bone which came from graft materials. 3. By performing bone biopsy pathologically new bone was formed around allograft and showed ability of the grafted bone to conduct new bone formation and PCBM showed multiple bone formation after l year.From these results it is confirmed that both materials are useful as graft material for the alveolar cleft.