Why is Nitinol used in dentistry?
Nitinol, also known as nickel-titanium or Ni-Ti alloy, is commonly used in orthodontics thanks to its shape memory and superelastic behaviour. We use archwires made from this clever metal alloy to move your teeth efficiently and reduce the frequency of adjustments.
What are archwires made of?
Orthodontic archwires may be fabricated from several alloys, most commonly stainless steel, nickel-titanium alloy (NiTi), and beta-titanium alloy (composed primarily of titanium and molybdenum).
What is the best wire for braces?
Nickel-titanium wires are perfect for the initial stages of treatment when the orthodontist needs to put pressure on the teeth.
What wires are used in orthodontics?
Currently, orthodontists principally use wires of four major base metal alloy types: stainless steel, cobalt-chromium-nickel, nickel-titanium and β-titanium (Table 4.
Why is nickel-titanium used for braces?
Abstract. 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.
What is nickel-titanium used for?
The nickel-titanium alloy Nitinol has been used in the manufacture of endodontic instruments in recent years. Nitinol alloys have greater strength and a lower modulus of elasticity compared with stainless steel alloys.
How do braces Archwires work?
An archwire puts pressure on your teeth and jawline, and elastic O-rings connect the archwire to the brackets. The archwire is adjusted periodically as your teeth slowly move into the desired place, and the elastic bands are switched out at orthodontist appointments.
How do braces archwires work?
What is TMA wire in orthodontics?
Titanium molybdenum alloy (TMA) or β titanium wire is a new orthodontic alloy with unique properties and an excellent balance of properties suitable for many orthodontic applications. For a given cross section, it can be deflected approximately twice as far as stainless steel wire without permanent deformation.
How do Archwires work?
What is nickel-titanium orthodontic wire alloy?
The first nickel-titanium orthodontic wire alloy was marketed by the Unitek Corporation who are now known as 3M Unitek. These alloys have low stiffness, superelasticity, high springback, large elastic range and were brittle. The initial niti wires did not have shape-memory effect due to the cold-working of the wire.
What type of Archwires are used for orthodontic treatment?
This type of archwire is a brand of beta titanium. Wires used in this initial phase in an orthodontic treatment requires them to have low stiffness, high strength and long working range. The ideal wires to use in this phase of treatment is a Nickel-Titanium archwires.
What is the effect of Niti on orthodontic arch wires?
112. Study by Eliades et al (2000) evaluating the structure and morphological condition of retrieved NiTi orthodontic arch wires reported that intra-oral exposure of NiTi wires alters the topography and structure of the alloy surface through surface attack in the form of pitting or crevice corrosion or formation of integuments.
What is the main focus of alterations induced on orthodontic wires?
Main focus of the alterations induced on orthodontic wires is on Ni Ti archwires because stainless steel & Co-Cr-Ni archwires are usually replaced in an escalating stepwise process as treatment progresses. www.indiandentalacademy.com 159.