Effect of a bioactive glass-ceramic on the apatite nucleation on titanium surface modified by micro-arc oxidation

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• 作者：Paulo Soares^a ; ^{pa.soares@pucpr.br} ; Carlos A.H. Laurindo^a ; Ricardo D. Torres^a ; Neide K. Kuromoto^b ; Oscar Peitl^c ; Edgar D. Zanotto^c
• 关键词：Bioactive glass-ceramic ; Titanium ; Micro-arc oxidation ; Hydroxyapatite formation
• 刊名：Surface and Coatings Technology
• 出版年：2012
• 期刊代码：106_02578972
• 类别：ms
• 出版时间：25 June, 2012
• 卷：206
• 期：22
• 页码：4601-4605
• 文件大小：769 K

摘要

The aim of this work was to evaluate the ability of a bioactive glass-ceramic to induce the apatite nucleation on the titanium oxide layer produced by micro-arc oxidation. 鈥?em>In vitro鈥?tests were carried out on a simulated body fluid solution in two different manners: one group was soaked in the SBF, while the other group was soaked together with the bioactive glass-ceramic. Results revealed that after 7 days, the specimens soaked in SBF were covered with an amorphous calcium phosphate layer, while the specimens soaked in SBF plus glass-ceramic formed a crystalline apatite layer, suggesting thus, that the glass-ceramic provides silanol groups that accelerated the hydroxyapatite apatite precipitation on the anodic TiO₂ layer.