›› 2015, Vol. 35 ›› Issue (3): 170-174.

• 基础研究 • 上一篇    下一篇

作为GBR屏障膜的新型胶原膜的体内植入效果分析

白冰,朱静涛,王立威   

  1. 中国医科大学附属口腔医院
  • 收稿日期:2014-07-24 修回日期:2014-08-15 出版日期:2015-03-28 发布日期:2015-03-30
  • 通讯作者: 白冰 E-mail:bai7878@163.com
  • 基金资助:
    辽宁省自然科学基金计划:-OH(羟基)对骨髓间充质干细胞定向成骨分化的调控研究

Osteoinductive potential in mandibular defects using a novel collagen membrane

  • Received:2014-07-24 Revised:2014-08-15 Online:2015-03-28 Published:2015-03-30

摘要: [摘要] 目的 探讨Ⅰ型胶原和矿化Ⅰ型胶原合成的胶原膜作为GBR屏障膜在动物体内植入后,诱导早期膜下成骨的能力。方法 实验于2013年10月—2014年3月在沈阳军区总医院动物实验中心完成。选取小型巴马猪双侧下颌骨,分别于下颌骨骨体处用牙科裂钻制备8 mm×8 mm全层骨缺损3个,分别应用实验胶原膜覆盖、Bio-gide@覆盖、无覆盖膜骨缺损区。术后1个月处死动物,在处死前1、2周分别肌肉注射四环素溶液与二甲酚橙溶液。固定样本后,制备硬组织切片。分别在荧光显微镜及光学显微镜下(甲苯胺蓝、亚甲基蓝-酸性品红染色)观测膜的降解程度及膜下新骨生成能力,评价材料膜下骨形成量和骨成熟程度。结果 实验组胶原膜具备良好的屏障作用,膜下新生骨矿化程度良好;骨小梁排列整齐,但新生骨量少于Bio-gide@覆盖组;无覆盖膜骨缺损区新生骨组织骨小梁排列混乱,新生骨量少。 结论 新型胶原膜在1个月时体内无明显降解,具备良好的膜下成骨能力,下一步需进行实验组胶原膜的改性,以增加胶原膜膜下成骨量。

关键词: 胶原膜, 引导骨再生, 骨长入, 巴马猪

Abstract: Objective: This study evaluates a new collagen-based synthetic degradable barrier membrane for use in guided bone regeneration. Methods: A new collagen/HA-collagen degradable barrier membrane were embedded in Bama pigs mandibular bone and Bio-gide@ membrane served as reference materials. In Bama pigs, three standardized 8mm×8mm defect was created in mandibular bone. Three groups (collagen/HA-collagen,Bio-gide@, no membrane) were evaluated at 4 weeks. New bone formation was demonstrated by histological analysis. Results: In the Bio-gide@ and collagen/HA-collagen groups, the defects were left incompleted new formed bone filling. In contrast to uncovered mandibular defects, substantial bone healing was observed in defects covered with a barrier membrane. In the non membrane covered case, the formation of bone was unformed in 4 weeks. There were new formed bone under the Bio-gide@ and collagen/HA-collagen membranes. The amount of new bone formed under the Bio-gide@ membranes were more than the amount of bone formed under the collagen membranes. Conclusion: It can be concluded that the collagen/HA-collagen membrane was well suited for use in guided bone regeneration.

Key words: collagen membrane, guided bone regeneration (GBR), New bone formation

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