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Updated: Jan 12, 2026
Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires
Published on: July 24, 2018
Comparative Assessment of Wire Deformation, Breakage, Frictional Resistance, and Patient Discomfort in Orthodontic
1Clinical Project Manager, InBrace, Irvine, CA, USA.
Background:
Orthodontic archwires' characteristics are known to have an effect on the effectiveness, duration, and comfort of orthodontic treatment. Despite the widespread use of nickel-titanium (NiTi), SS, and TMA wires, comparative testing on wear, breakage, friction, and discomfort among patients has not been conducted. The study is still in its early stages.
Aim:
To check pain and deformation of patients and also for frictional resistance on various arches at the end of 6 weeks.
Methodology:
Across three groups (NiTi, SS, TMA), 25 patients were included in the study that evaluated the archwire deformation and frictional resistance. A sense of distress occurred at 24 h, 3 days, and 1 week. The statistical methods used were Chi-square, analysis of variance (ANOVA), and Kaplan-Meier tests.
Results:
NiTi wires had the lowest level of deformation and breakage (P = 0.038). In contrast, SS wires had the greatest frictional resistance (P 0.001) among all other types. Time exhibited a gradual decrease in pain.
Conclusion:
The results indicate that a greater number of NiTi wires are more comfortable and durable, whereas SS wire has fewer breaks and friction.
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