Comparison of TMA, Stainless Steel and Timolium for Friction, Load Deflection and Surface Characteristics

K. Abhirami *, **
Periodicity:April - June'2021


The present study aims to characterize and compare the mechanical properties and surface characteristics of two arch wire alloys commonly used in orthodontics: stainless steel and TMA, along with a newly introduced material, Timolium. An INSTRON 2366 testing machine was utilized for frictional characteristic and three-point bend testing. Scanning electron microscopy was employed for surface evaluation and X-ray fluorescence for elemental analysis of Timolium wire specimens.Stainless steel was found to be the strongest arch wire alloy, with less friction at the arch wire-bracket interface. TMA wires exhibited better load deflection characteristics with less stiffness than the other two wires. However, the surface of TMA appeared rough and exhibited very high values for friction at the arch wire-bracket interface.Timolium appeared to be an alpha-beta titanium alloy composed of titanium, aluminum, and vanadium and showed intermediate values for all the parameters evaluated. With its smooth surface, reduced friction, and better strength, Timolium could be considered a breakthrough material in clinical orthodontic practice.


Orthodontic Arch Wire Alloys, Stainless Steel, TMA, and Timolium.

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