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Indian J Dent Res. 2019 Jul-Aug;30(4):548-552. doi: 10.4103/ijdr.IJDR_420_18.

Evaluation and comparison of surface characteristics of commercially available TMA wires using scanning electron microscopy and optical profilometer.

Author information

1
Department of Orthodontics and Dentofacial Orthopaedics, Indira Gandhi Institute of Dental Sciences, Sri Balaji Vidyapeet University, Puducherry, Tamil Nadu, India.
2
Department of Orthodontics and Dentofacial Orthopaedics, Meenakshi Ammal Dental College, Chennai, Tamil Nadu, India.

Abstract

Aim:

The aim of this study was to evaluate and compare the surface characteristics of colored titanium molybdenum alloy archwires (purple-coated TMA and honey dew-coated TMA) and the regular titanium molybdenum alloy archwires.

Materials and Methods:

The experiment comprised three groups, Group I - regular TMA archwires, Group II - purple-coated TMA archwires, Group III - honey dew-coated TMA wires involving 21 samples each. The surface characteristics were assessed using scanning electron microscopy and optical profilometer.

Results:

The results were statistically analyzed using analysis of variance wherein Group I regular TMA wires exhibited a root mean square value of 148.071 nm and a standard deviation of 9.0027 nm followed by group II (purple-coated TMA wires) which showed a root mean square value of 84.095 nm with a standard deviation of 2.6005 nm, while group III (honey dew-coated TMA wires) was found to have a root mean square value of 71.681 nm with a standard deviation of 1.4645 nm on subjecting to optical profilometry.

Conclusion:

The surface roughness is higher for regular TMA wire exhibiting superior characteristic of color-coated TMA wires, especially honey dew-coated TMA wires over the regular and purple-coated TMA wires. This property of the archwires details regarding its application in both sliding and frictionless mechanics in retraction phase of fixed orthodontic treatment.

KEYWORDS:

Optical profilometer; scanning electron microscopy; titanium molybdenum alloy wires

PMID:
31745051
DOI:
10.4103/ijdr.IJDR_420_18
[Indexed for MEDLINE]
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