Many of the undesirable side effects that occur during orthodontic treatment can be attributed directly to a lack of understanding of the physics involved in a given adjustment of an orthodontic appliance. A large number of variables in orthodontic treatment are not within our control, such as growth and tissue response to appliances. However, the force placed on the tooth should be a controllable variable (1), and careful study of the physics underlying our clinical application, can help in reducing those undesirable side effects. If researchers and clinicians can quantify the force systems applied to the teeth, they can better understand clinical and histologic responses.
Orthodontic force systems used in everyday orthodontic mechanics are considered indeterminate force systems, in other words, there are too many unknowns to determine the different components of these force systems. Until recently, much of the literature was restricted to experimental two-dimensional analyses of the biomechanical aspects of orthodontic force systems, and computer modeling of three-dimensional analyses. Very little evidence exists in the literature regarding three dimensional experimental measurement and analysis of orthodontic force systems (2). Force system measurements were made on one or two tooth models, however in order for us to understand the orthodontic force systems we need to simultaneously, measure in 3D, the forces being applied on every tooth in the dental arch.
With the very recent technological advances in force/torque sensors technology, data acquisition and data representation, it became possible to measure those forces and reveal the force systems we are applying to the dentition. The purpose of this PhD research study is the design and construction of an experimental device that is capable of revealing the details of the force systems used in modern day orthodontic mechano-therapy of continuous arch technique. / Orthodontics
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:AEU.10048/428 |
| Date | 11 1900 |
| Creators | Badawi, Hisham |
| Contributors | Toogood, Roger (Mechanical Engineering), Paul Major, (Dentistry), Carey, Jason (Mechanical Engineering), Hoe, Giseon (Dentistry), Toogood, Roger (Mechanical Engineering), Paul Major, (Dentistry), Carey, Jason (Mechanical Engineering), Hoe, Giseon (Dentistry), Faulkner, Gary (External), Bourauel, Christoph (External) |
| 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 | 13736528 bytes, application/pdf |
| Relation | Badawi H, Toogood R, Carey J, Heo G, Major P. Torque expression of self-ligating brackets. American Journal of Orthodontics and Dentofacial Orthopedics. AJODO, 2008, 133(5): 721-728, Badawi H, Carey J, Major P. 3D Orthodontic Force Measurement. American Journal of Orthodontics and Dentofacial Orthopedics, In press |
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