HA/PMMA纳米复合暂冠材料的合成及其性能表征和细胞相容性检测  被引量:1

Characteristics of Hydroxyapatite/PMMA Nanocomposites for Provisional Restoration and Its Biocompatibility with Human Gingival Fibroblasts

在线阅读下载全文

作  者:张静超[1,2,3] 莫安春[2,3] 李吉东[4] 王学江[4] 李玉宝[4] 

机构地区:[1]海南口腔医院种植科,海口570105 [2]四川大学华西口腔医学院口腔修复学教研室,成都610041 [3]四川大学口腔疾病研究国家重点实验室,成都610041 [4]四川大学纳米生物材料研究中心,成都610046

出  处:《四川大学学报(医学版)》2014年第3期502-505,共4页Journal of Sichuan University(Medical Sciences)

摘  要:目的合成具有良好生物相容性的羟基磷灰石(HA)/聚甲基丙烯酸甲酯(PMMA)(H/P)复合暂时冠材料。方法将一定量的纳米HA与PMMA混合,分别合成HA质量分数为20%(20wt%)、30%(30wt%)、40%(40w.t%)、50%(50wt%)的4组复合材料。此复合材料经固化、打磨、抛光,扫描电镜(SEM)观察其表面微结构。将人牙龈成纤维细胞接种在以上各组及纯PMMA组、纯钛组样本表面,共同培养24h后,免疫荧光标记细胞骨架;培养1、3、5、7d后,MTT法测细胞活力。结果SEM结果显示,20wt%H/P组和30wt%H/P组的纳米HA团聚体基本被PMMA基质所覆盖,40wt%H/P组样本表面的团聚体尺寸小而均匀,直径约为2~4μm,而在50wt%H/P组表面,团聚体直径达到5~10μm,表面可见较多裂隙。40wt%H/P组和50wt%H/P组细胞铺展成长梭形,其他H/P组及纯PMMA组细胞较圆缩。40wt%H/P组各时点细胞活力与纯钛组的差异无统计学意义(P〉0.05);其余H/P组及纯PMMA组细胞活力多低于纯钛组,差异有统计学意义(P〈0.05)。结论40wt%H/P生物相容性接近纯钛,有望用于种植修复暂时冠材料,改善软组织美学。Objective To formulate hydroxyapatite(HA)/polymethyl methacrylate (PMMA) composites with improved cytocompatibility for provisional restoration. Methods Nanocomposites with 20 wt%,30 wt%,40 wt%, and 50 wt% HA/PMMA (H/P) were developed and examined using X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM). Human gingival fibroblasts were cultured on those HA/PMMA discs and investigated by fluorescent staining on 24 h and MTT assay at 1 d, 3 d, 5 d and 7 d. Results Chemical integration of HA/PMMA interface was confirmed by XPS. Typical fusiform cells with adhesion spots were detected on 40 wt% and 50 wt% H/P discs. MTT results showed insignificant differences in cell growth between 40 wt% H/P and pure titanium (Ti, P〉0.05), while the other H/P discs showed significantly lower cell growth than pure Ti (P〈0.05). Conclusion 40 wt% H/P might be a promising candidate for provisional dental implant restoration and for esthetic gingival contour.

关 键 词:暂时冠PMMA HA 生物相容性 人牙龈成纤维细胞 

分 类 号:R318.08[医药卫生—生物医学工程]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象