Monitoring System of Corrosion for Dental alloy

牙科合金腐蚀监测系统

• 批准号: 08457536
• 负责人: TAKAHASHI Shigeo
• 金额: $ 3.39万
• 依托单位: Matsumoto Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08457536/
• 关键词: Electrochemical measurement; Corrosion; Dental alloy; Monitoring

The aim of this study to estimate of the damage for dental alloys by corrosion, and design the system of corrosion measurement. The method was selected coulostatic method from electrochemical measurement. Full computer control apparatus need to use the coulostatic method as monitoring system of corrosion. Therefor potentiogalvanostat Model283 (SEIKO EG&G), personal computer(IBM) and software Model352/252(SEKO EG&G) was got by this grant.However the Model352/252 software was not able to control the coulostatic measurement. Then we improved the software, but it was very hard work. So we leave it the SEIKO EG&G.Potentiostatic method was applied to use the monitoring system of corrosion instead of coulostatic method. The results of dental alloys were obtained by means of potentiostatic method (Table 1). In artificial saliva the susceptibility of dental alloys to sulfide corrosion can rank to use the monitoring system of corrosion, Additionally it has to calibrate and confirm to investigate applicability. Potentiostatic method is simple procedure as same as coulostatic method, but measurement time is so long. If the software for coulostatic method is improved, we will applicant of coulostatic method to the monitoring system of corrosion.

本研究的目的是评估牙科合金的腐蚀损伤，并设计腐蚀测试系统。该方法是从电化学测试中选择的恒电法。全电脑控制装置需要采用恒电位法作为腐蚀监测系统。由此产生了恒电位仪Model283(Seiko EG&G)、个人计算机(IBM)和软件Model352/252(Seko EG&G)，但Model352/252软件不能控制恒电位仪的测量。然后我们改进了软件，但这是非常困难的工作。采用恒电位法代替恒电位法，建立了腐蚀监测系统。牙科合金的结果是通过恒电位法获得的(表1)。在人工唾液中，牙科合金对硫化物腐蚀的敏感性可以列为腐蚀监测系统的一部分，此外还需要对其进行校准和确认以考察其适用性。恒电位法与恒电位法一样，程序简单，但测量时间较长。如果对恒电法软件进行改进，我们将把恒电法应用到腐蚀监测系统中。

项目成果

Miroslav Marek: "Corrosion Test for Dental Amalgam" Journal of Dental Research. Vol.59. 63-69 (1980)

Miroslav Marek：“牙科汞合金腐蚀测试”牙科研究杂志。

Miroslv Marek: "An Electrochemical Test for the Evaluation of Sulfide Tarnishing of Dental alloys" Corrosion and Degradation of Implant Materials. 168-177 (1989)

Miroslv Marek：“用于评估牙科合金硫化物失去光泽的电化学测试”植入材料的腐蚀和降解。

"American Dental Association" Guide to Dental materials and Devices 7thed.(1974)

《美国牙科协会》牙科材料和设备指南第 7 版。(1974)