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Permanent link (DOI): https://doi.org/10.7939/R32N4ZX7M

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Three Dimensional Comparison of Self-ligating Brackets Open Access

Descriptions

Author or creator
Melenka, Garrett W.
Nobes, David S.
Carey, Jason P.
Major, Paul W.
Additional contributors
Subject/Keyword
Deformation
Orthodontic bracket
Digital Image Correlation
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
Archwire rotation is used in orthodontic treatment to alter the labiolingual orientation of a tooth. Measurement of the 3-dimensional (3D) motion of the orthodontic brackets requires a new configuration of the orthodontic torque simulator. The orthodontic torque simulator was coupled with a stereo microscope and 2 cameras to allow for the 3D bracket motion to be determined during wire twisting. The stereo camera images were processed with a 3D digital image correlation technique to determine the 3D deformation of the orthodontic brackets. Three self-ligating brackets (Damon Q, Ormco, Orange, Calif; In-Ovation R, GAC, Bohemia, NY; and Speed, Strite Industries, Cambridge, Ontario, Canada) were compared by using the 3D digital image correlation method to demonstrate the difference in 3D motion of self-ligating brackets components. Contour plots of the 3 brackets demonstrate the 3D motion of the bracket tie-wings and the archwire retentive component. The 3D motion of the bracket tie-wings and archwire retentive component were quantified. The displacement values of the archwire retentive component measured with the 3D orthodontic torque simulator were found to be 2.0 and 3.5 times less for the In-Ovation and Damon Q brackets than the values in previous studies that examined the compliance of the archwire retentive component. The 3D digital image correlation method used to quantify bracket deformation showed the 3D motion of the bracket tie-wings and the motion of the archwire retentive component. The use of a 3D optical measurement system is useful to understand the motion of the archwire retentive component but is not necessary to quantify bracket tie-wing motion. This measurement technique can be used to evaluate brackets of varying designs.
Date created
2013
DOI
doi:10.7939/R32N4ZX7M
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Attribution-NonCommerical-NoDerivs 4.0 International
Citation for previous publication
Melenka, Garrett W., Nobes, David S., Carey, Jason P., & Major, Paul W. (2013). Three Dimensional Comparison of Self-ligating Brackets. American Journal of Orthodontics & Dentofacial Orthopedics, 143(5), 645–657.  http://dx.doi.org/10.1016/j.ajodo.2012.12.010

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File format: pdf (Portable Document Format)
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File author: Garrett Melenka
Page count: 30
File language: en-CA
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