Decrowding of lower anterior segment with and without photobiomodulation: a single center, randomized clinical trial

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• 作者：Amer Z. Nahas ; Said A. Samara ; Tannaz A. Rastegar-Lari
• 关键词：Low ; intensity laser therapy (LILT) ; Light ; emitting diode (LED) ; Accelerated tooth movement ; Faster tooth movement ; Leveling and aligning ; Self ; ligating brackets
• 刊名：Lasers in Medical Science
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：32
• 期：1
• 页码：129-135
• 全文大小：
• 刊物类别：Medicine
• 刊物主题：Medicine/Public Health, general; Dentistry; Optics, Lasers, Photonics, Optical Devices; Quantum Optics;
• 出版者：Springer London
• ISSN：1435-604X
• 卷排序：32

文摘

The aim of this study was to evaluate the effect of low-level light therapy using light-emitting diodes (LEDs) on the speed of tooth movements that were required for the leveling and aligning of the lower anterior segment during non-extraction orthodontic treatment. The sample was comprised of patients (n = 40) with lower anterior crowding who were treated with self-ligating orthodontic brackets and a standardized wire sequence. A test group of patients (n = 20) who were treated with extraoral infrared light therapy for 20 min daily with at least 80 % compliance was compared to a control group (n = 20). The date of the first arch wire placement was recorded as T1, and the date of the completion of the lower anterior segment decrowding was recorded as T2. A final impression was also taken at T2. The time between T1 and T2 was significantly reduced by 22 % in the test group compared to the control group (68.3 vs. 87.8 days, respectively, p < 0.043). The use of photobiomodulation for 20 min daily at a wavelength of 850 nm might reduce the time required to resolve lower anterior crowding. This trial and its protocol were not registered on a publicly accessible registry.