![](/images/graphics-bg.png)
In-vitro evaluation of load-deflection characteristics and force levels of nickel titanium orthodontic archwires
Joint Authors
Ruwai, Riyad Abdah al-Hamzah
al-Huwayzi, Akram Faysal
Source
Journal of Baghdad College of Dentistry
Issue
Vol. 27, Issue 3 (30 Sep. 2015), pp.159-164, 6 p.
Publisher
University of Baghdad College of Dentistry
Publication Date
2015-09-30
Country of Publication
Iraq
No. of Pages
6
Main Subjects
Topics
Abstract EN
Background : Nickel-titanium (NiTi) archwires have become increasingly popular because of their ability to release constant light forces, which are especially useful during initial alignment and leveling phase.
The aim of the present study was to investigate and compare the load–deflection characteristics of four commercially available NiTi archwires.
Materials and methods : 200 NiTi 0.014, 0.016, 0.018, 0.016 x 0.022 and 0.019 x 0.025-inch nickel–titanium archwires from four different manufacturers (3M, Ortho Technology, Jiscop and Astar) were tested.
The load-deflection properties of these archwires were evaluated by a full arch bending test in both palatal and gingival directions at 37°C temperature using a universal material testing machine.
Forces generated at maximum loading of 2mm and at unloading of 1.5mm were measured.
Results: All the tested NiTi wires showed an increase in loading and unloading force with increased wire dimension.
Generally, 3M gave the most flexible round wires and relatively stiff rectangular wires ; with linear load deflection curves.
Ortho Technology wires were flexible.
Jiscop gave the stiffest round wires and the most flexible rectangular wires.
Astar wires were stiff which gave the highest force levels during unloading.
Conclusion : Force levels vary greatly from brand to brand and so NiTi wire brands must be selected with consideration to their load-deflection characteristics and mechanical properties.
American Psychological Association (APA)
Ruwai, Riyad Abdah al-Hamzah& al-Huwayzi, Akram Faysal. 2015. In-vitro evaluation of load-deflection characteristics and force levels of nickel titanium orthodontic archwires. Journal of Baghdad College of Dentistry،Vol. 27, no. 3, pp.159-164.
https://search.emarefa.net/detail/BIM-611683
Modern Language Association (MLA)
Ruwai, Riyad Abdah al-Hamzah& al-Huwayzi, Akram Faysal. In-vitro evaluation of load-deflection characteristics and force levels of nickel titanium orthodontic archwires. Journal of Baghdad College of Dentistry Vol. 27, no. 3 (Sep. 2015), pp.159-164.
https://search.emarefa.net/detail/BIM-611683
American Medical Association (AMA)
Ruwai, Riyad Abdah al-Hamzah& al-Huwayzi, Akram Faysal. In-vitro evaluation of load-deflection characteristics and force levels of nickel titanium orthodontic archwires. Journal of Baghdad College of Dentistry. 2015. Vol. 27, no. 3, pp.159-164.
https://search.emarefa.net/detail/BIM-611683
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 163-164
Record ID
BIM-611683