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The Effect of Light Emitting Diode Phototherapy on the Rate Orthodontic Tooth Movement - A Clinical Study Sean Everett Victor Chung Master of Science Faculty of Dentistry University of Toronto 2013 Abstract Increasing the rate of orthodontic tooth movement (OTM) can reduce risks such as periodontal disease and caries. This study investigated whether light emitting diode (LED) phototherapy could accelerate the rate of OTM. Orthodontic patients with bilaterally symmetric extraction of premolars were recruited. During space closure, LED phototherapy was applied to one side of the dental arch for a specified time and the contralateral side acted as the control. Space closure was measured immediately prior to, during and later in space closure. All 11 patients were compliant with LED application. The results revealed no significant changes in the rate of OTM with LED phototherapy over 3 months of extraction space closure. The findings were contrary to previous findings with laser phototherapy and could be related to the dosage or method of LED phototherapy delivery. Further investigations are needed to determine whether LED phototherapy application can influence the rate of OTM. iiPDF Image | Effect of LED Phototherapy on the Rate of Orthodontic Tooth Movement
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