Nickel ion release of niti archwire in variations of immersion time and toothpaste

Nickel-titanium archwires in orthodontic wires have nickel ion releases. The use toothpaste and saliva immersion time may cause its This study aims to prove the difference interaction between variations towards amount of releases at nickel-titanium archwires. was an experimental research with a post-test only control group design. Twenty seven were divided into three groups, i.e., K group, which immersed artificial saliva. P1 1.5 gram A, P2 saliva, B. samples incubated (37 °C) for 1 months. Nickel released analyzed using SSA. Two Way ANOVA Post Hoc LSD test statistic used. results this 0.112 mg/l 0.685 mg/l, 0.093 0.670 0.099 0.657 mg/l. There differences (p = 0.029), 0.000) there no 0.505) on release. significant K-P1 0.038), K-P2 0.013), P1-P2 0.049). variation, but variation