Effect of wire torquing on clips of self-ligating brackets
Date
2008
DOI
Authors
Weinberger, Shirley
Version
OA Version
Citation
Abstract
Objectives: 1) Determine the torque value and long-axis rotation value at which clips of SLBs will open or deform 2) Compare the differences between Active and Passive SLB systems in regards to clip and spring failure 3) Determine the effect of arch wire size on the above results.
Materials and methods: Six different SLB's participated in the study: Innovation-R (GAC International); SPEED (Strite Industries Limited); Time (American Orthodontics); Damon 2 [superscript TM] (Ormco); Damon 3 [superscript TM] (Ormco); SmartClip [superscript TM] (3M Unitek). All brackets had .022 inch slot. Three different diameter stainless steel orthodontic wires were used: .016x.022, 019x025, .021x.025 inch. Two tests were performed; a torque test designed to determine the failure value for the six SLB’s and three wires. Each bracket-wire combination was tested 10 times, and each test was performed with a new wire-bracket. A long-axis rotation test designed to determine the amount in g-mm needed to open or deform the clips of the self-ligating brackets. In this test 2 wires were used with each bracket; each bracket-wire combination was tested 15 times. All data were statistically analyzed.
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Description
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Thesis (MSD)--Boston University, Goldman School of Dental Medicine, 2008 (Dept. of Orthodontics).
Includes bibliographical references: leaves 61-63.
Thesis (MSD)--Boston University, Goldman School of Dental Medicine, 2008 (Dept. of Orthodontics).
Includes bibliographical references: leaves 61-63.
License
This work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.