Comparison of Frictional Resistance of Teflon-coated Stainless Steel and Stainless Steel Wires Ligated with Various Types of Ligature in Ceramic Brackets
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Abstract
The aim of the study was to compare frictional resistance of stainless steel (SS) and Teflon-coated SS wires ligated with various types of ligature in ceramic brackets. Six combinations of specimens, comprising two types of 0.019x0.025-inch main archwire, SS and Teflon-coated SS wires, and three types of ligation, elastomeric, SS and Teflon-coated SS ligatures were used in 0.022x0.028-inch ceramic brackets, 10 samples for each group. The frictional resistance of each combination was measured using a universal testing machine. The means of maximum static frictional resistance were compared according to types of wire and ligature using Two-way ANOVA followed by Dunnett's T3 post-hoc test (p<0.05).
The results showed that the frictional resistance of Teflon-coated SS wires (58.6±35.1 g) was not significantly different from that of SS wires (68.8±48.4 g) regardless of the ligature type. The frictional resistance of elastomeric ligatures (108.5±40.7 g) was statistically significantly greater than that of SS ligatures (32.7±17.1 g) and Teflon-coated SS ligatures (50.0±16.0 g) (p<0.001), whereas the frictional resistance of Teflon-coated SS ligatures was statistically significantly greater than that of SS ligatures regardless of the wire type (p<0.01).
In conclusion, the frictional resistance of Teflon-coated SS and SS wires were not significantly different when used in the ceramic brackets regardless of the ligature type.
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