中国实用口腔科杂志

中国实用口腔科杂志

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冷热循环对不同电解液体系微弧氧化后钛瓷结合强度影响研究

朱佳妮1，王硕1，宋续军1，徐婷2a，谈飞2b，刘杰2b   

  1. 1. 青岛大学口腔医学院，山东  青岛  266000 ；2. 青岛大学附属医院a 医保审核科，b 口腔修复科，山东  青岛  266000
  • 出版日期:2019-04-15 发布日期:2019-05-29
  • 基金资助:

    山东省自然科学基金（ZR201709210399）

  • Online:2019-04-15 Published:2019-05-29

摘要：

目的    研究冷热循环对不同微弧氧化电解液体系处理后钛瓷结合强度的影响。方法    研究于2018年1—10月在青岛科技大学、青岛大学附属医院、第四军医大学进行。制备纯钛切削试件72片，随机均分为3组。A组（对照组）仅喷砂处理；B、C组（实验组）喷砂后微弧氧化，B组电解液为20 g/L MgSiF6，C组电解液为20 g/L Na2SiO3。各组根据烤瓷后冷热循环次数的不同再分别分为1、2、3组，1组未经冷热循环，2组3000次循环，3组6000次循环。三点弯曲实验检测钛瓷结合强度。扫描电镜观察微弧氧化后膜层形貌、钛瓷结合界面并进行能谱分析。结果   2个实验组钛瓷结合强度均高于对照组。各组经冷热循环后的钛瓷结合强度较未经冷热循环的均有降低，经6000次循环的C3组降低幅度（16.60%）小于B3组（34.03%）。结论    20 g/L Na2SiO3溶液体系的微弧氧化处理更适用于临床。

关键词: 冷热循环, 微弧氧化, 钛瓷结合, 电解液

Abstract:

Objective    To study the influence of thermocycling on the Ti-ceramics bonding strength after micro-arc oxidation with different electrolyte systems. Methods    Totally 72 slices of pure titanium were randomly divided into three groups：group A，treated with sand spraying only；group B and C were treated with sand blasting and micro-arc oxidation；the electrolyte of group B was 20 g/L MgSiF6；in group C it was 20 g/L Na2SiO3. Then each group was divided into group 1，2 and 3 according to the number of thermocycling. The bonding strength of titanium porcelain was tested by three point bending test. Scanning electron microscopy was used to observe the morphology of micro-arc oxidation film and the structure of titanium porcelain interface. Results    The bonding strength of titanium and porcelain in the experimental group was higher than that of the control group. The bonding strength of each group was reduced after thermocycling compared with that before，and the decline range of group C3 was smaller than that of group B3 after 6000 cycles. Conclusion　Micro-arc oxidation treatment in 20 g/L Na2SiO3 solution system is more suitable for clinical application.

Key words: thermocycling, micro-arc oxidation, titanium ceramic bonding, electrolyte