Deformation of the orthodontic bracket upon wire engagement may result in torque dissipation within the bracket rather than transmission to the tooth and its supporting structures. The purpose of this study was: 1) quantify the amount of torque expression and 2) quantify any deformation as a result of such increasing torque expression.
Digital image correlation is an accurate means of analyzing an orthodontic bracket's structural response to an applied moment of force created through archwire rotation in vitro.
A sample of 30 Orthos and 30 OrthosTi brackets were tested with custom software using a novel application of digital image correlation.
OrthosTi brackets produce significantly greater amounts of torque from 48 to 24 returning to a neutral position. Titanium brackets exhibit greater variance in torque expression but less variance in deformation. Orthos stainless steel brackets exhibit significantly greater amounts of bracket slot deformation in comparison to the OrthosTi. / Orthodontics
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:AEU.10048/1297 |
| Date | 11 1900 |
| Creators | Lacoursiere, Ryan A. |
| Contributors | Dr. Paul W. Major (Dentistry), Dr. David Nobes (Mechanical Engineering), Dr. Giseon Heo (Dentistry), Dr. Jason Carey (Mechanical Engineering), Dr. Paul W. Major (Dentistry), Dr. David Nobes (Mechanical Engineering, Dr. Giseon Heo (Dentistry), Dr. Jason Carey (Mechanical Engineering) |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 15577773 bytes, application/pdf |
| Relation | Lacoursiere, Ryan (2010).http://www.sage-hindawi.com/journals/jdb/2010/397037.html |
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