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VOLUME 17 , ISSUE 5 ( May, 2016 ) > List of Articles

RESEARCH ARTICLE

Evaluating the Surface Characteristics of Stainless Steel, TMA, Timolium, and Titanium-niobium Wires: An in vivo Scanning Electron Microscope Study

A Laxmi Prasanna, K Pradeep Babu, V Naga Keerthi, Deepika Madathody, Vidhya Gopinath, M Senthil Kumar, A Nanda Kumar

Citation Information : Prasanna AL, Babu KP, Keerthi VN, Madathody D, Gopinath V, Kumar MS, Kumar AN. Evaluating the Surface Characteristics of Stainless Steel, TMA, Timolium, and Titanium-niobium Wires: An in vivo Scanning Electron Microscope Study. J Contemp Dent Pract 2016; 17 (5):372-376.

DOI: 10.5005/jp-journals-10024-1857

Published Online: 01-05-2016

Copyright Statement:  Copyright © 2016; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Background

Recent metallurgical research and advancement in material science has benefited orthodontists in the selection of an appropriate wire size and alloy type, which is necessary to provide an optimum and predictable treatment results. The purpose of the study was to clinically evaluate and compare the surface characteristics of 16 × 22 stainless steel, Titanium molybdenum alloy, timolium, and titanium-niobium before and after placing them in a patient's mouth for 3 months using a scanning electron microscope (SEM).

Materials and methods

The total sample size was 40, which were divided into four groups (group 1 – stainless steel wires, 10 samples, group 2 – TMA wires, 10 samples, group 3 – timolium wires, 10 samples, and group 4 – titanium-niobium wires, 10 samples), and these were further subdivided into 5 each. The first subgroup of five samples was placed in the patient's mouth and was evaluated under SEM, and another subgroup of five samples was directly subjected to the SEM.

Results

Scanning electron microscopic evaluation of surface characteristics of unused 16 × 22 rectangular stainless steel wire under 500 × magnification showed an overall smooth surface. Stainless steel wire samples placed in the patient's mouth showed black hazy patches, which may be interoperated as areas of stress. TMA unused wires showed multiple small voids of areas and small craters with fewer elevated regions. The TMA wire samples placed in the patient's mouth showed black hazy patches and prominent ridges, making the wire rougher. Timolium unused archwires showed heavy roughness and voids, whereas wires tested in the patient's mouth showed homogeneous distribution of deep cracks and craters. Unused titanium-niobium archwires showed uniform prominent striations and ridges with occasional voids, whereas wires used in the patient's mouth showed prominent huge voids that could be interpreted as maximum stress areas.

Conclusion

Stainless steel (group 1) used and unused wires showed smooth surface characteristics when compared with all the other three groups followed by timolium, which was superior to titanium-niobium wires and TMA wires.

Clinical significance

Timolium wires are superior to titaniumniobium wires and TMA wires.

How to cite this article

Babu KP, Keerthi VN, Madathody D, Prasanna AL, Gopinath V, Kumar MS, Kumar AN. Evaluating the Surface Characteristics of Stainless Steel, TMA, Timolium, and Titanium-niobium Wires: An in vivo Scanning Electron Microscope Study. J Contemp Dent Pract 2016;17(5):372-376.


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