Background: The duration of orthodontic treatment is often a significant deterrent for patients when considering conventional mechanics. which can be time-consuming. Photobiomodulation (PBM) utilizes visible red to near-infrared wavelengths of light frequencies to expedite orthodontic treatment time. Objective: To investigate the effect of three Light Emitting Diode (LED) frequencies ... https://allfixelectricales.shop/product-category/rangehood-wall-vent-adaptor/