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In vitro release of nickel and chromium from different types of simulated orthodontic appliances
Nickel Chromium Corrosion Orthodontic appliances
2009/1/12
Five identical samples, each consisting of a fixed appliance, a headgear and a quad-helix for one-half of a dental arch, were immersed in 0.9% sodium chloride for 2 hours, 24 hours and 7 days. A con...