摘要
目的 :利用喷砂、酸蚀和碱热处理技术构建粗化、改性植入体表面并对其形貌进行分析。方法 :直径15mm的TA2纯钛棒 ,加工成厚 1mm的圆片 ,晶相砂纸逐渐打磨至 60 0目。 40目金刚砂喷砂、草酸酸蚀、5mol/LNaOH溶液处理 2 4h ,60 0℃加热 ,构建成粗化、改性钛表面 ,以SEM观察表面形貌 ,能谱分析表面元素组成。结果 :光滑钛表面仅见规则划痕 ,粗化表面形成多级孔洞状结构 ,能谱分析表面元素为 10 0 %Ti。经碱热处理 ,可见钛表面在孔洞的基础上形成了大量的微网状结构 ,能谱分析发现大量Na+ 及O元素的存在。经体外模拟体液浸泡实验 ,发现经碱热处理的钛表面有大量的钙结节沉积。结论 :经粗化加碱热处理的钛表面上形成了多级孔洞为基础的网状TiO2 水凝胶层 。
objective: To produce titanium dioxide hydrogel layer on the pure rough titanium(Ti) surface. Methods: Pure Ti discs( d =15mm) were polished to 600 grind, sandblasted and etched with acid, socked in 60 ℃ 5 mol/L NaOH solution for 24 h and then heated to 600℃ for an hour to get goughening, alkaline and heat treated Ti(RAH). The smooth, rough and RAH surfaces were analyzed with scanning electron microscope(SEM) and energy despersive X ray analysis(EDXA). Results: On smooth surfaces only regular polished grooves could be seen, while holes in different diameters formed on rough surfaces. A porous framework was found on the surfaces of the RAH observed by SEM. EDXA showed that the smooth and rough surfaces were consisted of 100% Ti, while there were a lot ofoxygen and sodium in RAH discs. Apatite formed on the RAH Ti surfaces when it is soaked in simulated body fluid for two weeks. Conclusion: A porous Ti dioxide hydrogel layer forms on the rough titanium substrate during alkaline and heat treatment.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2003年第1期34-36,共3页
Journal of Practical Stomatology
关键词
钛
种植体
喷砂处理
碱热处理
Titanium
Implants
Sandblast
Alkali and heat treatment
