PDF Publication Title:
Text from PDF Page: 054
4.4 Possible Reasons for the Lack of Effect of LED on Rate of OTM This study showed that IR-LED phototherapy did not appear to have any significant effect on the rate of OTM in the sample population in this study. The results were consistent with 2 similar human studies, but contrasted with some other studies, where LLLT was used to accelerate tooth movement (Genc et al., 2012; Doshi-Mehta and Bhad-Patil, 2011; da Silva Sousa et al., 2009; Kocoglu-Altan et al., 2009; Youssef et al., 2008; Limpanichkul et al., 2006, Cruz et al., 2004). A number of factors might be responsible for the lack of differences from LED phototherapy in this study. A) Dosage of LED: The patients were asked to apply the LED device once per day between orthodontic appointments. It is possible that the dose received (ie. the IR-LED intensity or duration) was inadequate or in excess to cause a notable effect on OTM. Such a scenario would indicate that the current dosage was insufficient to enter a phototherapeutic window. A consequence of being outside of this therapeutic range would be no biological effects, an explanation that has been cited in prior LLLT studies that did not demonstrate a benefit to laser therapy on OTM (Kocoglu-Altan, 2009; Limpanichkul et al., 2006) and in studies where phototherapeutic effects have been seen at only one of two energy levels (Goulart et al., 2006). If it is assumed that the LED device settings were appropriate, then attenuation of the LED light is another possibility for a reduced dose-response effect. IR-LED light is primarily scattered and absorbed by skin pigmentation and hemoglobin but this attenuation can be reduced by the use of longer infrared wavelengths (Graber et al., 2012; Stolik et al., 2011; Stolik et al., 42PDF Image | Effect of LED Phototherapy on the Rate of Orthodontic Tooth Movement
PDF Search Title:
Effect of LED Phototherapy on the Rate of Orthodontic Tooth MovementOriginal File Name Searched:
Chung_Sean_EV_201311_MSc_thesis.pdfDIY PDF Search: Google It | Yahoo | Bing
Cruise Ship Reviews | Luxury Resort | Jet | Yacht | and Travel Tech More Info
Cruising Review Topics and Articles More Info
Software based on Filemaker for the travel industry More Info
The Burgenstock Resort: Reviews on CruisingReview website... More Info
Resort Reviews: World Class resorts... More Info
The Riffelalp Resort: Reviews on CruisingReview website... More Info
CONTACT TEL: 608-238-6001 Email: greg@cruisingreview.com (Standard Web Page)