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3D打印PLGA/CHA/nmZnO复合脚手架对大鼠炎症性牙周骨缺陷的修复作用

Chong-Yan Xu1,2, Yuan Zhao2, Ji-Fan Zhan1,2

  • 1Postgraduate Research Institute, Kunming Medical University, Kunming, China.

Journal of biomedical materials research. Part A
|December 29, 2025
PubMed
概括

这项研究开发了用于牙周炎的PLGA/CHA/nmZnO骨架. 最佳的30%的支架显示出显著的骨再生和免疫调节,表现优于Bio-Oss.

关键词:
PLGA/CHA/nmZnO复合结构的脚手架.生物信息学分析分析骨再生 骨再生牙周炎是指牙周炎的一种疾病.

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科学领域:

  • 生物材料科学 生物材料科学
  • 组织工程是组织工程.
  • 牙周病学 牙周病学

背景情况:

  • 牙周炎导致严重的骨损失,需要有效的骨再生策略.
  • 目前的骨移植材料在骨质生成和免疫调节方面存在局限性.

研究的目的:

  • 开发和优化用于牙周骨再生的PLGA/CHA/nmZnO复合支架.
  • 评估不同CHA/nmZnO含量的骨质生成潜力和免疫调节作用.

主要方法:

  • 使用3D融挤出成型,制造了具有不同度填充剂的PLGA/CHA/nmZnO支架.
  • 评估了大鼠骨髓介质干细胞 (BMSCs) 的物理化学性质,生物相容性和体外骨质基因分化.
  • 活体骨质效应在老鼠牙周炎骨缺陷模型中进行了评估,并与Bio-Oss.比较.

主要成果:

  • 脚手架表现出相互连接的孔隙和合适的机械性能.
  • 含有25-35%CHA/nmZnO的复合脚手架显著促进了BMSC的扩散和骨质分化.
  • 30%的支架在体内显示出优异的骨再生,增加了BV/TV,BS/TV和原形成,同时抑制了与炎症相关的因素 (TLR2,TLR7,IL-1β).

结论:

  • 最佳的PLGA/CHA/nmZnO支架 (30%含量) 呈现出优异的骨质诱导和免疫调节,用于牙周骨再生.
  • 这种优化的支架有望成为治疗牙周缺陷的新材料,超过传统的骨移植.