Indian Journal of Dental Research

ORIGINAL RESEARCH
Year
: 2015  |  Volume : 26  |  Issue : 4  |  Page : 378--383

Effects of clinical use and sterilization on surface topography and surface roughness of three commonly used types of orthodontic archwires


Joji Isac, BS Chandrashekar, S Mahendra, CM Mahesh, Bala Mohan Shetty, AV Arun 
 Department of Orthodontics and Dentofacial Orthopedics, Krishnadevaraya College of Dental Sciences, Bengaluru, Karnataka, India

Correspondence Address:
Joji Isac
Department of Orthodontics and Dentofacial Orthopedics, Krishnadevaraya College of Dental Sciences, Bengaluru, Karnataka
India

Aim: To evaluate the changes in surface topography and roughness of stainless steel (SS), nickel-titanium and beta-titanium (β-Ti) archwires after clinical use and sterilization. Settings and Design: Thirty wires each of SS, nitinol, and β-Ti (3M Unitek) were tested in as received, as received and autoclaved, and clinically retrieved then autoclaved conditions. Materials and Methods: A sterilization protocol of 134°C for 18 min was performed using an autoclave. Surface topography of specimens from each subgroup was examined using an environmental scanning electron microscope (ESEM model Quanta 200, The Netherlands) at ×100, ×1000, and ×2500 magnifications. Surface roughness was measured using arithmetic mean roughness (Ra) values obtained from optical profilometric scanning (Taylor Hobson, Leicester, UK). Statistical Analysis: Data were analyzed by one-way analysis of variance and Tukey's post-hoc procedures. Results: Scanning electron microscope images revealed an increase in surface irregularities in SS and nitinol wires after clinical use. There was a significant increase in Ra values of SS orthodontic wires after intra-oral exposure (P = 0.0002). Conclusion: Surface roughness of SS wires increased significantly after clinical use. Autoclave sterilization did not affect considerably on surface characteristics of any archwire.


How to cite this article:
Isac J, Chandrashekar B S, Mahendra S, Mahesh C M, Shetty BM, Arun A V. Effects of clinical use and sterilization on surface topography and surface roughness of three commonly used types of orthodontic archwires.Indian J Dent Res 2015;26:378-383


How to cite this URL:
Isac J, Chandrashekar B S, Mahendra S, Mahesh C M, Shetty BM, Arun A V. Effects of clinical use and sterilization on surface topography and surface roughness of three commonly used types of orthodontic archwires. Indian J Dent Res [serial online] 2015 [cited 2020 Apr 7 ];26:378-383
Available from: http://www.ijdr.in/article.asp?issn=0970-9290;year=2015;volume=26;issue=4;spage=378;epage=383;aulast=Isac;type=0