Evaluation of Corrosion Degradation of Amalgams by Immersion and Fracture Test

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概要

• 論文の詳細を見る

• In this study an immersion and fracture test was used to evaluate the susceptibility of dental amalgams to degradation of their mechanical strength by corrosion. Specimens of each of the six types of high-copper amalgams and one type of low-copper amalgam were prepared and tested. Cylindrical specimens were grooved using a diamond cutoff blade and immersed in 1% NaCl to which H_20_2 was added to increase the oxidation power. After two weeks of exposure the specimens and controls were fractured and the loss of strength was calculated. Two amalgams showed a significant loss of strength. The test procedure is relatively simple and does not require sophisticated electrochemical or analytical instrumentation. A higher resolution power might be achieved by increasing the severity of corrosion or the number of replicate tests.

• 日本歯科理工学会の論文

著者

• TAKAHASHI SHIGEO

  Department of Orthopedic Surgery, Mitsubishi Nagoya Hospital

• Takahashi S

  Department Of Dental Technology Matsumoto Dental University

• HORASAWA Noriko

  Department of Dental Technology, Matsumoto Dental University

• MAREK Miroslav

  School of Materials Science & Engineering, Georgia Institute of Technology

• Marek Miroslav

  School Of Materials Science & Engineering Georgia Institute Of Technology

• Horasawa N

  Department Of Dental Technology Matsumoto Dental University

• Takahashi Shigeo

  Department Of Agricultural Science Okayama University

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