Iimuro F T, Yoneyama T, Okuno O
Division of Metallurgy, Institute for Medical and Dental Engineering, Tokyo Medical and Dental University, Japan.
Dent Mater J. 1993 Dec;12(2):136-44. doi: 10.4012/dmj.12.136.
Implants and magnetic attachments are becoming widespread in dental treatment. Their associated use, implants and magnetic attachments, can be seen often too. In those cases, it is difficult to avoid coupling of different metals. The corrosion behavior of the metals is expected to be different depending on whether it is found in an isolated or a coupled condition. Potential corrosion couples in a dental magnetic attachment system among titanium, ferromagnetic stainless steel, gold alloy type IV, and gold-silver-palladium alloy were studied by an immersion test in 1% lactic acid for 7 days and potential/current density curves were measured. Corrosion of titanium and ferromagnetic stainless steel seemed to be accelerated by coupling with gold alloys or gold-silver-palladium alloys. On the other hand, the corrosion amount of gold alloy and gold-silver-palladium alloys were attenuated by coupling.
种植体和磁性附着体在牙科治疗中越来越普遍。它们的联合使用，即种植体和磁性附着体，也经常可见。在这些情况下，不同金属的耦合难以避免。金属的腐蚀行为预计会因处于孤立状态还是耦合状态而有所不同。通过在1%乳酸中浸泡7天的浸泡试验研究了牙科磁性附着体系统中钛、铁磁不锈钢、IV型金合金和金银钯合金之间的潜在腐蚀耦合，并测量了电位/电流密度曲线。钛和铁磁不锈钢与金合金或金银钯合金耦合后腐蚀似乎加速。另一方面，金合金和金银钯合金的腐蚀量因耦合而减少。
