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Comparison of frictional forces between aesthetic orthodontic coated wires and self-ligation brackets

Authors
 Yunmi Kim  ;  Jung-Yul Cha  ;  Chung-Ju Hwang  ;  Hyung Seog Yu  ;  Seon Gun Tahk 
Citation
 Korean Journal of Orthodontics (대한치과교정학회지), Vol.44(4) : 157-167, 2014 
Journal Title
 Korean Journal of Orthodontics (대한치과교정학회지) 
ISSN
 2234-7518 
Issue Date
2014
Keywords
Bracket ; Frictional forces ; Wire
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 0°, 5°, 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) 5° 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 0° 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.
Files in This Item:
T201403323.pdf Download
DOI
10.4041/kjod.2014.44.4.157
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Yu, Hyung Seog(유형석) ORCID logo https://orcid.org/0000-0002-1275-5078
Cha, Jung Yul(차정열)
Hwang, Chung Ju(황충주) ORCID logo https://orcid.org/0000-0003-3024-4551
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/99864
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