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对钛表面喷砂酸蚀工艺进行优化研究,以用于牙种植体表面改性。采用喷砂酸蚀法对钛片表面进行粗化处理,以粗化的钛片表面中0.5~2μm孔洞所占比例和表面平均接触角作为正交试验的参考指标,对喷砂酸蚀工艺进行优化。在试验范围内,表面处理的最优参数为:喷砂材料TiO2,酸蚀温度100℃,酸蚀时间20min,混酸60%H2SO4、10%HCl和去离子水的体积比1∶1∶2。将得到的最优参数应用于钛片和牙种植体,利用扫描电镜、接触角测量仪及能谱仪对其形貌、接触角、成骨细胞粘附及成分进行分析。结果表明:优化工艺处理后,钛片表面平均接触角达67°,且均匀性较好,利于细胞吸附生长;钛片和牙种植体表面都获得了均匀的微米级孔洞结构,但种植体螺纹不同部分的表面形貌不一样。
Optimized the sandblasting and etching process of titanium surface for surface modification of dental implants. The surface of the titanium plate is roughened by sandblasting and etching method. The ratio of the 0.5-2μm holes in the surface of the roughened titanium plate and the average contact angle of the surface are taken as reference indexes for the orthogonal test, and the sandblasting etching process is carried out optimization. Within the experimental range, the optimal parameters of surface treatment are: sandblasting material TiO2, etching temperature 100 ℃, etching time 20min, mixed acid 60% H2SO4, volume ratio of 10% HCl and deionized water 1: 1: 2. The optimal parameters obtained were applied to titanium and dental implants. The morphology, contact angle, osteoblast adhesion and composition were analyzed by scanning electron microscopy, contact angle measurement and energy dispersive spectroscopy. The results showed that the average contact angle of the titanium plate surface was 67 ° and the uniformity was good after the optimization process, which was conducive to the cell adsorption and growth; uniform micro-scale pore structure was obtained on the titanium plate and dental implant surface, but the implant thread Different parts of the surface morphology is not the same.