J Periodontal Res:可生物降解的明胶/β-磷酸三钙海绵结合重组人成纤维细胞生长因子-2治疗衰退型缺损:犬类半口对照研究

2017-09-16 MedSci MedSci原创

通过使用人重组(rh)生长因子技术的组织工程有望提供一种治疗牙龈退缩的方法。成纤维细胞生长因子-2(FGF-2)可能有促进牙周再生的能力。已经开发出明胶/β-三磷酸钙(明胶/β-TCP)海绵用来控制生长因子的释放。本研究通过比较rhFGF-2结合的明胶/β-TCP海绵与单独的支架,以评价在人工建模的狗衰退型缺损中rhFGF-2的牙周再生功效。

通过使用人重组(rh)生长因子技术的组织工程有望提供一种治疗牙龈退缩的方法。成纤维细胞生长因子-2(FGF-2)可能有促进牙周再生的能力。已经开发出明胶/β-三磷酸钙(明胶/β-TCP)海绵用来控制生长因子的释放。本研究通过比较rhFGF-2结合的明胶/β-TCP海绵与单独的支架,以评价在人工建模的狗衰退型缺损中rhFGF-2的牙周再生功效。

材料和方法:在五只狗的上颌犬齿手术创建严重颊侧牙龈退缩缺损模型。每只动物缺损随机分配接受浸泡rhFGF-2的明胶/β-TCP海绵(明胶/β-TCP / rhFGF-2)或磷酸盐缓冲盐水(明胶/β-TCP)处理。手术后8周,获取活检标本,进行微电脑断层扫描和组织学分析。

结果:两组实现完全的根覆盖。明胶/β-TCP / rhFGF-2组的微电脑断层扫描成像显示出更多的新骨量形成。组织学上,两组均显示有牙周再生;然而,明胶/β-TCP / rhFGF-2位点显示出更多的组织再生,其特征在于大量的新的牙骨质和骨。明胶/β-TCP位点长连接上皮和结缔组织附着的增加。在明胶/β-TCP / rhFGF-2位点,新骨显示出许多哈弗斯管和外环骨板以及许多血管化和细胞的厚骨膜。

结论:在本研究的有限范围内显示,明胶/β-TCP海绵中的rhFGF-2可以增加犬类衰退型缺损中牙周愈合/再生的潜力。

原始出处:

A. Shujaa Addin, T. Akizuki, S. Hoshi, et al. Biodegradable gelatin/beta-tricalcium phosphate sponges incorporating recombinant human fibroblast growth factor-2 for treatment of recession-type defects: A split-mouth study in dogs. Journal of Periodontal Research. 2017 October. doi: 10.1111/jre.12456

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    2018-04-19 amyloid
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    2018-03-09 feather89
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