三种材料封闭磨牙牙槽嵴保存术创的早期评价

Early Clinical Efficacy Evaluation of Three Materials in Molar Alveolar Ridge Preservation

目的:评价应用三种材料封闭磨牙牙槽嵴保存术创的早期临床效果。方法:纳入30颗磨牙样本,随机分为三组,即骨胶原(Bone collagen,BC)组、胶原基质(Collagen matrix,CM)组及自体游离龈移植物(Free gingival graft,FGG)组,分别进行牙槽嵴保存术创封闭,每组10颗。结合CBCT、口腔扫描观察软组织厚度、创口面积、牙槽骨高度及体积变化。结果:术后15 d Collagen组创口面积收缩量明显高于其他两组(P<0.05)。术后即刻、15 d、30 d软组织厚度CM组明显高于其他两组(P<0.05)。术后30 d牙槽骨垂直高度变化三组间差异无统计学意义(P>0.05)。术后30 d牙槽骨体积减少量Collagen组明显高于其他两组(P<0.05)。结论:在牙槽嵴保存术创面愈合早期应用胶原基质及自体游离龈移植物封闭创面能阻止游离龈收缩塌陷,有利于维持附着龈稳定及成骨空间。

Objective To evaluate the early clinical efficacy of alveolar ridge preservation with three materials in the molar area.Methods Thirty samples were enrolled and randomly divided into three groups with 10 in each group.Bone collagen,collagen matrix and free gingival graft individually performed to cover the wound and they were evaluated through CBCT and oral scan to observe soft tissue thickness,wound area,alveolar bone height and volume.Results The wound area shrinkage of the Collagen group was significantly higher than the other two groups at 15 d after the operation(P<0.05).The thickness of soft tissue in CM group at 0d,15 d,and 30 d after the operation was significantly higher than the other two groups(P<0.05).There was no significant difference in the alveolar bone vertical height among the three groups at 30 d after the operation(P>0.05).Thirty days after the operation,volume reduction in the Collagen group was extremely higher than the other two groups(P<0.05).Conclusion Wound cover with collagen matrix and free gingival graft can prevent free gingival shrinkage and collapse at the extraction site and maintain the stability of attached gingival and osteogenic space in the early stage of socket healing.