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Skip to Search Results- 15Nobes, David S.
- 12Carey, Jason P.
- 11Major, Paul W.
- 8Melenka, Garrett W.
- 5Heo, Giseon
- 3Bessa, Guilherme M.
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Measurement of orthodontic bracket tie wing elastic and plastic deformation by arch wire torque expression utilizing an optical image correlation technique
Download2010
Badawi, Hisham H., Homeniuk, Darren L.N., Lacoursiere, Ryan A., Carey, Jason P., Nobes, David S., Major, Paul W.
Orthodontic lingual root movement (torque) is an important aspect of treatment biomechanics and is typically achieved by torsion of a rectangular wire within the orthodontic bracket slot which introduces a force couple. The magnitude of the force moment achieved by wire torsion may be influenced...
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Orthodontic bracket manufacturing tolerances and dimensional differences between select self-ligating brackets
Download2010
Nobes, David S., Carey, Jason P., Major, Paul W., Major, Thomas W.
In all manufacturing processes there are tolerances; however, orthodontic bracket manufacturers seldom state the slot dimensional tolerances. This experiment develops a novel method of analyzing slot profile dimensions using photographs of the slot. Five points are selected along each wall, and...
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2022-06-01
Jen, Nathan, Bessa, Guilherme, Nicholson, KAelyn, Xiao, Jianliang, Nobes, David S., Chung, Hyun-Joong
Conference abstract. Part of the Proceedings of the Canadian Society for Mechanical Engineering International Congress 2022.
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The effect of perturbations on resistance to sliding in second order moments comparing two different bracket types
Download2014
Wong, Justin W., Carey, Jason P., Romanyk, Dan L., Heo, Giseon, Toogood, Roger W., Major, Paul W.
Orthodontic literature has shown all ligation methods to behave similarly in the clinical situation; however, the reasoning behind this still requires further investigation. A novel frictional device able to measure forces at the level of the bracket along with a custom perturbation device was...
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The Effect on Elastic Modulus of Rigid-Matrix Tubular Composite Braid Radius and Braid Angle Change Under Tensile Loading
Download2013
Melenka, Garrett W., Leung, Cheequn K., Nobes, David S., Carey, Jason P.
The objective of this paper is to assess changes in braid radius and braid angle of braided composite tubes under tensile loading using stereomicroscope digital image correlation (DIC) based optical measurement techniques. Using this approach, displacement fields were calculated and three...
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2013
Carey, Jason P., Melenka, Garrett W., Nobes, David S., Major, Paul W.
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...
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2013
Nobes, David S., Major, Paul W., Melenka, Garrett W., Carey, Jason P.
Braces are used by orthodontists to correct the misalignment of teeth in the mouth. Archwire rotation is a particular procedure used to correct tooth inclination. Wire rotation can result in deformation to the orthodontic brackets, and an orthodontic torque simulator has been designed to examine...
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Validation of a Numerical Model for Reciprocating Thermodynamic Machines by Examining Heat Transfer in a Low Temperature Difference Stirling Engine
Download2022-06-01
Lottmann, Matthias, Nobes, David S.
A third order two-dimensional numerical model for reciprocating thermodynamic machines is validated using a low temperature difference Stirling engine with 15 Watt shaft power and source and sink temperatures of 150 °C and 5 °C. The work is limited to the thermodynamic model at steady state. The...