Evaluation of Surface Topography of CU NITI Wire After Infection Control Procedure

Abstract

Background: The ideal shape and condition of orthodontic wires are essential for effective orthodontic therapy. The market provides a variety of wires constructed from various metals and alloys. Among them NiTi archwires used for preliminary leveling and alignment of teeth in orthodontic treatment. Alloys made of copper, nickel, titanium, and some chromium are known as copper-nickel-titanium (CuNiTi) alloys. The copper in the alloy improves the wire's thermal-reactive characteristics and increases its resistance to permanent deformation.
Objective: The main aim of this study is evaluation of surface topography of cu NiTi wire after infection control procedure.
Materials and Method: The study sample consisted of 3mm straight cu NiTi orthodontic wire segment. They were split into two groups, each with 3 samples. The 5 samples of each group were then equally divided according to sterilization method. After sterilization and disinfection of the experimental group, SEM was used to evaluate the surface topography, and a universal testing equipment had been used to measure the tensile strength.
Result: SEM photographs of the present study shows gross increase in pitting roughness of the surface topography of cu NiTi wires after sterilization.
Conclusion: Orthodontists who want to offer maximum safety for their patients can sterilize orthodontic wires before placement, as it does not deteriorate the surface roughness of the alloys.