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Permanent link (DOI): https://doi.org/10.7939/R3F11M

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The Effect of Conventional Elastomers on Force and Moment of a Self-Ligating Orthodontic Bracket with Second-Order Angulation in the Dry and Wet States evaluated through a new 3D Friction Device Open Access

Descriptions

Other title
Subject/Keyword
three-dimensional
self-ligating bracket
orthodontic bracket
state
elastic ligation
elastomer
angulation
friction
force
moment
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Fathimani, Maryam
Supervisor and department
Toogood, Roger (Mechanical Engineering)
Major, Paul (Dentistry)
Examining committee member and department
Flores-Mir, Carlos (Dentistry)
Heo, Giseon (Dentistry)
Department
Medical Sciences-Orthodontics
Specialization

Date accepted
2012-12-13T09:12:04Z
Graduation date
2013-06
Degree
Master of Science
Degree level
Master's
Abstract
Objective: A new three-dimensional friction device was used to investigate the effect of conventional elastomers on force and moment of a self-ligating orthodontic bracket with second-order angulation during a simulated retraction. Methods: An 0.018x0.025-in stainless steel archwire was drawn through a 0.022-in Damon Q self-ligating bracket at a rate of 6mm/min. 130 brackets, 65 with and 65 without conventional elastomers, were tested at angulations from 0° to 5° and in dry and wet (human saliva) states. Force and moment values were recorded in x, y, and z directions. Results: There was strong evidence for force and moment to be significantly influenced by the effects of angulation, elastomer, state, and all interactions. Angulation, elastomer, and the interaction of angulation and elastomer were the primary influencers, whereas saliva had little effect or lubricious behavior. Conclusions: The tested self-ligating bracket had less force and moment compared to the same bracket with elastomer addition.
Language
English
DOI
doi:10.7939/R3F11M
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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2014-04-24T22:29:01.937+00:00
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File format: pdf (Portable Document Format)
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File size: 2011462
Last modified: 2015:10:12 16:20:48-06:00
Filename: Fathimani_Maryam_Spring 2013.pdf
Original checksum: 56564f29e10fc883d458ec084815ff9a
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Valid: true
Status message: File header gives version as 1.4, but catalog dictionary gives version as 1.3
File author: Maryam Fathimani
Page count: 144
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