Understanding the Shape-Memory Alloys Used in Orthodontics | Zendy

Daniel J. Fernandes | Zendy; Rafael Vidal Peres | Zendy; Alvaro M. Mendes | Zendy; Carlos Nelson Elias | Zendy

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Understanding the Shape-Memory Alloys Used in Orthodontics

Author(s) -

Daniel J. Fernandes,

Rafael Vidal Peres,

Alvaro M. Mendes,

Carlos Nelson Elias

Publication year - 2011

Publication title -

isrn dentistry

Language(s) - English

Resource type - Journals

eISSN - 2090-438X

pISSN - 2090-4371

DOI - 10.5402/2011/132408

Subject(s) - shape memory alloy , nickel titanium , materials science , elasticity (physics) , pseudoelasticity , elastic modulus , sma* , deformation (meteorology) , metallurgy , composite material , martensite , computer science , microstructure , algorithm

Nickel-titanium (NiTi) shape-memory alloys (SMAs) have been used in the manufacture of orthodontic wires due to their shape memory properties, super-elasticity, high ductility, and resistance to corrosion. SMAs have greater strength and lower modulus of elasticity when compared with stainless steel alloys. The pseudoelastic behavior of NiTi wires means that on unloading they return to their original shape by delivering light continuous forces over a wider range of deformation which is claimed to allow dental displacements. The aim of this paper is to discuss the physical, metallurgical, and mechanical properties of NiTi used in Orthodontics in order to analyze the shape memory properties, super-elasticity, and thermomechanical characteristics of SMA.

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