中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (51): 9617-9620.doi: 10.3969/j.issn.1673-8225.2011.51.027

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

种植体材料钛与种植体上部结构合金间电偶的腐蚀性

汤  雅1，王国平2   

  1. 1南京医科大学附属医院南京市江宁医院口腔科，江苏省南京市  211100
    2南京医科大学附属医院江苏省口腔医院种植修复科，江苏省南京市  210029
  • 收稿日期:2011-04-29 修回日期:2011-06-28 出版日期:2011-12-17 发布日期:2011-12-17
  • 通讯作者: 王国平，南京医科大学附属医院江苏省口腔医院种植修复科，江苏省南京市 210029
  • 作者简介:汤雅★，女，1983年生，汉族，江苏省南京市人，2008年南京医科大学毕业，硕士，主要从事口腔修复体材料方面的研究。

Galvanic corrosion between Ti implants and implant superstructure dental alloys

Tang Ya1, Wang Guo-ping2   

  1. 1Department of Stomatology, Jiangning Hospital, Affiliated Hospital of Nanjing Medical University, Nanjing  211100, Jiangsu Province, China
    2Department of Prosthodontics and Implant, Jiangsu Provincial Stomatology Hospital, Affiliated Hospital of Nanjing Medical University, Nanjing  210029, Jiangsu Province, China
  • Received:2011-04-29 Revised:2011-06-28 Online:2011-12-17 Published:2011-12-17
  • Contact: Wang Guo-ping, Department of Prosthodontics and Implant, Jiangsu Provincial Stomatology Hospital, Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
  • About author:Tang Ya★, Master, Department of Stomatology, Jiangning Hospital, Affiliated Hospital of Nanjing Medical University, Nanjing 211100, Jiangsu Province, China tangya1019@ 163.com

PDF

658

被引次数

5

摘要：

背景：大多数和钛种植体接触的牙科金属修复部分，会引起电偶腐蚀的发生。偶对在种植体界面产生带正电的局部环境，这会直接影响组织状况，尤其是骨吸收。
目的：评价TA2型商业纯钛分别与金合金、钴铬合金、钛合金及镍铬合金在体外的电偶腐蚀行为。
方法：在人工唾液中体外模拟TA2型商业纯钛分别与金合金、钴铬合金、钛合金及镍铬合金接触时的回路, 测量其作用15 h的混合电位和电偶电流值并描绘电流时间曲线。
结果与结论：4组合金接触8 h后电流达到稳定，稳定后电偶电流值排列顺序为钛/金合金<钛/钴铬合金<钛/钛合金<钛/镍铬合金。提示钛/金合金组电偶腐蚀最小，金合金是最适合作为种植义齿上部结构的材料；钛/镍铬合金组电偶腐蚀最大，镍铬合金是最不适合作为种植义齿上部结构的材料。

关键词: 钛, 种植体, 电偶腐蚀, 钛, 牙科合金

Abstract:

BACKGROUND: Most of the dental metal repair materials contacting Ti implants will cause galvanic corrosion and local environment with positive electricity on the implant interface, which directly affects the status of the tissues, especially bone resorption.
OBJECTIVE: To evaluate the galvanic corrosion of commercially pure Ti (TA2 type) coupled with Au alloy, CoCr alloy, Ti alloy, and NiCr alloy in vitro.
METHODS: Circuit of commercially pure Ti contacting with Au alloy, CoCr alloy, Ti alloy, and NiCr alloy was simulated in vitro in artificial saliva, and the common potential and galvanic current in 15 hours were recorded to draw current-time curves.
RESULTS AND CONCLUSION: The galvanic current became stable after 8 hours of contacting. The galvanic current was the greatest in Ti/Au, followed by Ti/CoCr, Ti/Ti alloy, and then Ti/NiCr. Results indicated that the galvanic corrosion of the couple of Ti and Au alloy is the lowest. Au alloy is the most suitable material for implant superstructure. The galvanic corrosion of the couple of Ti and NiCr alloy is the highest, so NiCr alloy is not acceptable for implant superstructure.

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