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VOL. 5, ISSUE 2 (2023)

The effect of annealing on the elastic modulus of orthodontic wires

Authors

Gourav Patil, Tabish Bashir, Shailly Nimbark, Maulik Anal Bhatt, Shabana Tabassum

Abstract

Introduction: The objective of this study was to determine the effect of annealing on the elastic modulus of Nickel Titanium, Stainless Steel and Beta-titanium (TMA) wires. Different points along the wire were tested in order to determine how far from the annealed ends the elastic modulus of the wires was affected.

Methods: Eighty (80) orthodontic wires consisting of 4 equal groups (SS/TMA/Classic Nitinol^®/Super Elastic Nitinol^®) were used as the specimens for this study. All wires were measured and marked at 5mm measurements, and cut into 33.00mm sections. The wires were heated with a butane torch until the first 13.00mm of the wires were red hot.

Results: There was a significant difference (F = 533.001, p = 0.0005) in the change in elastic modulus for the four distances. There was also a significant difference (F = 57.571, p = 0.0005) in the change in elastic modulus for the four wire types. There was no statistical difference in the change in elastic modulus between 5mm and 10mm away from the annealed section (18mm and 23mm respectively). 2) Regardless of the wire type, no clinically important effects were seen 5mm and 10mm beyond the annealed portion.

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Pages:16-21

How to cite this article:

Gourav Patil, Tabish Bashir, Shailly Nimbark, Maulik Anal Bhatt, Shabana Tabassum "The effect of annealing on the elastic modulus of orthodontic wires". International Journal of Dental Research, Vol 5, Issue 2, 2023, Pages 16-21

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