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Permanent link (DOI): https://doi.org/10.7939/R3959CN39

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Investigation into the effects of stainless steel ligature ties on the mechanical characteristics of conventional and self-ligated brackets subjected to torque Open Access

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Author or creator
Al Fakir, Hussam
Carey, Jason P.
Melenka, Garrett W.
Nobes, David S.
Heo, Giseon
Major, Paul W.
Additional contributors
Subject/Keyword
Conventional ligation
Orthodontic brackets
Torque expression
Self-ligation
Bracket deformation
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
Objective: Torque is applied to orthodontic brackets in order to alter the buccal-lingual angulation of a tooth. One factor that can affect torque is the ligation mode used to retain the archwire in the bracket slot. The objective of this study was to investigate the effects of stainless steel ligation on torque expression and bracket deformation. Methods: This study utilized 60 upper right central incisor Damon Q brackets and 60 Ormco Orthos Twin brackets. The brackets used in this study were subdivided into four groups: (1) Damon Q ligated with SS ligature; (2) Damon Q with the sliding bracket door; (3) Orthos Twin bracket ligated with SS wire; and (4) Orthos Twin ligated with elastic ties. All brackets were tested using an orthodontic torque simulating device that applied archwire rotation from 0° to 45°. Results: All brackets ligated with stainless steel ties exhibited greater torque expression and less deformation than brackets without stainless steel ties. As well, Damon Q brackets exhibit less bracket deformation than Orthos Twin brackets. Conclusions: Stainless steel ties can reduce the amount of plastic deformation for both types of brackets used in this study.
Date created
2014
DOI
doi:10.7939/R3959CN39
License information
© 2014 Al Fakir, H., Carey, J.P., Melenka, G.W., Nobes, D.S., Heo, G., & Major, P.W. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
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Citation for previous publication
Al Fakir, Hussam, Carey, Jason P., Melenka, Garrett W., Nobes, David S., Heo, Giseon, & Major, Paul W. (2014). Investigation into the effects of stainless steel ligature ties on the mechanical characteristics of conventional and self-ligated brackets subjected to torque. Journal of Orthodontics, 41(3), 188-200.  http://dx.doi.org/10.1179/1465313314Y.0000000096

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