Comparison of Experimental Resistance to Sliding Between Different Orthodontic Arch Wires in Gold and Stainless Steel Brackets with Second-Order Angulations

Abstract

Aim:The purpose of this study was to test in vitro two types of golden brackets (Forever Gold 24K and Forever Gold) and one conventional stainless steel bracket (Mini Master) as control for sliding resistance in combination with nickel-titanium (NiTi) and stainless steel (SS) arch wires in four second-order angulations with respect to frictional force values.Materials and Methods:Since there are many factors affecting friction, all tests were performed in a dry environment without ligaturing using an electronic an-gulations unit and a universal test device. Arch wires were pulled through the slots with a crosshead speed of 1 mm/minute.Results:Statistical analyses showed that the primary effects ofall three factors that is namely bracket, wire material and angle were found significant in P0.05).Conclusion:It should be considered that 24 carat fine gold plated slots in metal brackets or golden slot inserts in esthetic brackets could be effective in reducing frictional forces particularly during leveling stages.

Keywords

• gold bracket
• arch wire
• friction
• angulation
• in vitro