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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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2022-06-01
Der, Jason, Bessa, Guilherme M., Nobes, David S.
Conference Abstract. Part of the Proceedings of the Canadian Society for Mechanical Engineering International Congress 2022.
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An investigation into the mechanical characteristics of select self-ligated brackets at a series of clinically relevant maximum torquing angles: Loading and unloading curves and bracket deformation
Download2011
Nobes, David S., Major, Paul W., Melenka, Garrett W., Major, Thomas, Carey, Jason P.
Edgewise orthodontic treatment utilizes a force couple in order to achieve labial–lingual tooth angulation. Two self-ligating brackets (Damon Q and Speed) were examined across a range of clinically relevant torques in order to assess the loading and unloading curves and bracket deformation. A...
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2022-06-01
Plamondon, Carson, Bessa, Guilherme M., Nobes, David S.
This paper outlines the design of an unsteady flowmeter for ex-vivo heart perfusion applications. In order to determine the performance of a given heart, the flowrate in the system must be recorded. The proposed design is based on an orifice plate flowmeter comprising three pressure transducers...
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Comparison of Deformation and Torque Expression of the Orthos and Orthos Ti Bracket Systems
Download2011
Major, Paul W., Melenka, Garrett W., Carey, Jason P., Nobes, David S., Heo, Giseon, Lacoursiere, Ryan A.
Orthodontic torque expression is the result of axial rotation of rectangular archwires within a rectangular bracket slot. This study investigates the effect of bracket material on torque expression. Torque exerted by a rotating archwire on each bracket will be measured as well as the relative...
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2013
Major, Paul W., Melenka, Garrett W., Nobes, David S., Carey, Jason P.
The design and testing of an orthodontic torque simulator that reproduces the effect of archwire rotation on orthodontic brackets is described. This unique device is capable of simultaneously measuring the deformation and loads applied to an orthodontic bracket due to archwire rotation. Archwire...
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2015
Heo, Giseon, Major, Paul W., Melenka, Garrett W., Carey, Jason P., Romanyk, Dan R., Toogood, Roger W., Fathimani, Maryam
Background The primary objective of this study was to develop a computer-controlled three-dimensional friction measuring system, the orthodontic friction simulator (OFS). A clinically-based in vitro experiment considering wet and dry friction for conventionally and self-ligated brackets is...
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2022-06-01
Saffar, Yeganeh, Nobes, David S., Sabbagh, Reza
The interaction between a capsule (bubble or droplet) and a flow structure of the continuous phase can affect the properties of the liquids, cells, and particles transferring within the capsule. Channel geometry is a common example of the flow structure influencer. Investigating the effect of...
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2022-06-01
Bessa, Guilherme M., Hadfield, Jake, Gopinath, Sutendra, Freed, Darren H., Nobes, David S.
Conference Abstract. Part of the Proceedings of the Canadian Society for Mechanical Engineering International Congress 2022.
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Investigation into the effects of stainless steel ligature ties on the mechanical characteristics of conventional and self-ligated brackets subjected to torque
Download2014
Heo, Giseon, Nobes, David S., Al Fakir, Hussam, Major, Paul W., Melenka, Garrett W., Carey, Jason P.
Objective: Torque is applied to orthodontic brackets in order to alter the buccal-lingual angulation of a tooth. One factor that can affect torque is the ligation mode used to retain the archwire in the bracket slot. The objective of this study was to investigate the effects of stainless steel...
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Measurement Accuracy and Reliability of Tooth Length on Conventional and CBCT Reconstructed Panoramic Radiographs
Download2014
Flores-Mir, Carlos, Carey, Jason P., Rosenblatt, Mark R., Major, Paul W., Heo, Giseon
Introduction: This in vivo study assessed accuracy and reliability of tooth length measurements obtained from conventional panoramic radiographs and CBCT panoramic reconstructions to that of a digital caliper (gold standard). Methods: The sample consisted of subjects who had CBCT and conventional...