|
KMID : 0361920140440040157
|
|
Korean Journal of Orthodontics
2014 Volume.44 No. 4 p.157 ~ p.167
|
|
|
Comparison of frictional forces between aesthetic orthodontic coated wires and self-ligation brackets
|
|
Kim Yun-Mi
Cha Jung-Yul
Hwang Chung-Ju
Yu Hyung-Seog
Tahk Seon-Gun
|
|
|
Abstract
|
|
|
Objective: The purpose of this study was to evaluate the clinical efficacy of polymer- and rhodium-coated wires compared to uncoated wires by measuring the frictional forces using self-ligation brackets.
Methods: 0.016-inch nickel titanium (NiTi) wires and 0.017 × 0.025-inch stainless steel (SS) wires were used, and the angulations between the brackets and wires were set to 0o, 5o, and 10°. Upper maxillary premolar brackets (Clippy-C®) with a 0.022-inch slot were selected for the study and a tensile test was performed with a crosshead speed of 5 mm/min. The maximum static frictional forces and kinetic frictional forces were recorded and compared.
Results: The maximum static frictional forces and the kinetic frictional forces of coated wires were equal to or higher than those of the uncoated wires (p < 0.05). The maximum static frictional forces of rhodium-coated wires were significantly higher than those of polymer-coated wires when the angulations between the brackets and wires were set to (i) 5o in the 0.016-inch NiTi wires and (ii) all angulations in the 0.017 × 0.025-inch SS wires (p < 0.05). The kinetic frictional forces of rhodium-coated wires were higher than those of polymer-coated wires, except when the angulations were set to 0o in the 0.016-inch NiTi wires (p < 0.05).
Conclusions: Although the frictional forces of the coated wires with regards to aesthetics were equal to or greater than those of the uncoated wires, a study under similar conditions regarding the oral cavity is needed in order to establish the clinical implications.
|
|
|
KEYWORD
|
|
|
Wire, Frictional forces, Bracket
|
|
|
FullTexts / Linksout information
|
|
  
|
|
|
Listed journal information
|
|
  
|