Comparison of friction between ceramic and conventional brackets
Date
2009
DOI
Authors
Fathian-Dehkordi, Mehrdad
Version
OA Version
Citation
Abstract
The purpose of this research was to compare resistance sliding between Ceramic and conventional brackets. This was done with three different wires (.016”, .018”) and (.016” x .022”), two different brackets (ceramic and conventional) with four different angles (0 [degrees], 5 [degrees], 10 [degrees] and 15 [degrees]). The resistance to sliding steadily increased as the angle between the archwire and bracket increased. This is true for each wire size and in each bracket type.
The resistance to sliding steadily increased as the thickness of the archwire increased. This is true of ceramic brackets both without the o-ring and with the o-ring and conventional brackets both with and without a ligature tie. Even though at “passive” angles the increased resistance to sliding provided by either o-ring in a ceramic bracket, or by a ligature in a conventional bracket was small, this small increase remains steady as the angle of the bracket increases.
The resistance to sliding increased as the thickness of the wire increased (as one would expect), but also the elastic binding increased as the thickness of the wire increased. The angles used in this project were greater than one would expect to see clinically, and the forces required to slide the archwire through the bracket were significantly higher than those typically used in orthodontics.
Description
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Thesis (MSD) --Boston University, Goldman School of Dental Medicine, 2009 (Department of Orthodontics).
Includes bibliographic references: leaves 34-37.
Thesis (MSD) --Boston University, Goldman School of Dental Medicine, 2009 (Department of Orthodontics).
Includes bibliographic references: leaves 34-37.
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.