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Visnja Katic, Lidija Curkovic, Magdalena Ujevic Bosnjak, Kristina Peros, Davor Mandic, Stjepan Spalj
Aim was to determine effect of pH, fluoride (F(-)) and hydrofluoric acid concentration (HF) on dynamic of nickel (Ni(2+)) and titanium (Ti(4+)) ions release. Nickel-titanium wires with untreated surface (NiTi), rhodium (RhNiTi) and nitride (NNiTi) coating were immersed once a week for five min in remineralizing agents, followed by immersion to artificial saliva. Ion release was recorded after 3, 7, 14, 21 and 28 days. Pearson correlations and linear regression were used for statistical analysis. Release of Ni(2+) from NiTi and NNiTi wires correlated highly linearly positively with HF (r=0...
March 31, 2017: Dental Materials Journal
Višnja Katić, Vilko Mandić, Damir Ježek, Gorana Baršić, Stjepan Špalj
OBJECTIVE: To analyze the effect of various fluoride formulations in commercially available agents on working properties of various nickel-titanium orthodontic wires. MATERIALS AND METHODS: Uncoated (NiTi), rhodium coated (RhNiTi) and nitrified (NNiTi) wires were immersed to dH2O, MiPaste, Elmex and Mirafluor for 1 h. Unloading slope characteristics (average force, bending action of the force and average plateau length) and the percentage of useable constant force during unloading were observed...
May 2015: Acta Odontologica Scandinavica
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