Abstract

There are many nickel-titanium alloy wires available in the market.Nevertheless not all of them possess the ideal characteristicsof shape memory and super-elasticity to be used in orthodontictreatment. The aim of the present study was to find austeniticfinal temperature of these archwires so as to determine thetransformation phase in order to better use them in orthodontics.Methods: Eleven nickel-titanium orthodontic wires were selected.Transformation phase was assessed using differential scanningcalorimetry method. Conclusions: The present study illustrateshow some orthodontic Ni-Ti wires elicit results contrary to thoseadvertised.

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