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http://dx.doi.org/10.4041/kjod.2012.42.3.129

Variations in surface roughness of seven orthodontic archwires: an SEM-profilometry study  

Amini, Fariborz (Department of Orthodontics and Dentofacial Orthopedics, Dental Branch, Islamic Azad University)
Rakhshan, Vahid (Department of Dental Anatomy and Morphology, Dental Branch, Islamic Azad University)
Pousti, Maryam (Department of Orthodontics and Dentofacial Orthopedics, Dental Branch, Islamic Azad University)
Rahimi, Hajir (Department of Orthodontics and Dentofacial Orthopedics, Dental Branch, Islamic Azad University)
Shariati, Mahsa (Department of Orthodontics and Dentofacial Orthopedics, Dental Branch, Islamic Azad University)
Aghamohamadi, Bahareh (Department of Orthodontics and Dentofacial Orthopedics, Dental Branch, Islamic Azad University)
Publication Information
The korean journal of orthodontics / v.42, no.3, 2012 , pp. 129-137 More about this Journal
Abstract
Objective: The purpose of this study was to evaluate the surface roughness (SR) of 2 types of orthodontic archwires made by 4 different manufacturers. Methods: This in vitro experimental study was conducted on 35 specimens of 7 different orthodontic archwires, namely, 1 nickel-titanium (NiTi) archwire each from the manufacturers American Orthodontics, OrthoTechnology, All-Star Orthodontics, and Smart Technology, and 1 stainless steel (SS) archwire each from the manufacturers American Orthodontics, OrthoTechnology, and All-Star Orthodontics. Aft er analyzing the composition of each wire by energy-dispersive X-ray analysis, the SR of each wire was determined by scanning electron microscopy (SEM) and surface profilometry. Data were analyzed using the Kruskal-Wallis and Mann-Whitney U tests (${\alpha}$ < 0.05). Results: The average SR of NiTi wires manufactured by Smart Technology, American Orthodontics, OrthoTechnology, and All-Star Orthodontics were $1,289{\pm}915A^{\circ}$, $1,378{\pm}372A^{\circ}$, $2,444{\pm}369A^{\circ}$, and $5,242{\pm}2,832A^{\circ}$, respectively. The average SR of SS wires manufactured by All-Star Orthodontics, OrthoTechnology, and American Orthodontics were $710{\pm}210A^{\circ}$, $1,831{\pm}1,156A^{\circ}$, and $4,018{\pm}2,214A^{\circ}$, respectively. Similar to the results of profilometry, the SEM images showed more defects and cracks on the SS wire made by American Orthodontics and the NiTi wire made by All-Star Orthodontics than others. Conclusions: The NiTi wire manufactured by All-Star Orthodontics and the SS wire made by American Orthodontics were the roughest wires.
Keywords
Physical property; Wire; Scanning electron microscopy; Biomaterial science;
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