10 weeks later,the alveolar ridge was vertically augmented 7.0mm and new bone looked as same as the original bone in group DO while the grafted bone was absorbed partly in group GTR.

• 术后10周DO 组牙槽嵴增高约7.；0mm；牵张区新生骨与正常骨无差异。 GTR 组几丁质膜几乎完全吸收；移植骨部分吸收。