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5.2 Abstract for poster presentation in the Charley Schultz resident Scholar Award- American Association of Orthodontists (AAO) Annual Session in May 2013 in Philadelphia. The Role of Light Emitting Diode (LED) Phototherapy on Orthodontic Tooth Movement (OTM). S CHUNG*, S GONG, B TOMPSON. Department of Orthodontics, Faculty of Dentistry, University of Toronto Objective: This study investigated LED phototherapy as an alternative to lasers in accelerating the rate of OTM in the clinical setting (Faculty of Dentistry, University of Toronto). Methods: During space closure of bilaterally symmetric premolar extraction sites, LED phototherapy was applied to one side of the dental arch (20 min/d; 4-12 weeks). Extraction spaces were measured on dental casts taken before (T0), during (T1) and later in space closure (T2). LED usage was recorded by the patient and the device. The rates of space closure in controls and LED-treated sides were compared. Results: All patients were compliant with LED usage. Preliminary results suggest no significant differences with the application of LED phototherapy. Conclusions: Preliminary results suggest that extra-orally delivered LED phototherapy does not significantly alter the rate of OTM. Further studies are needed to determine if variations in the LED phototherapy prescription can influence the rate of OTM. Supported by: U of T, Faculty of Dentistry Dental Research Institute 49PDF Image | Effect of LED Phototherapy on the Rate of Orthodontic Tooth Movement
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