Effect of Low Power Laser on Postoperative Pain in Endodontic treatment: Literature Review

Pain after endodontic treatment is common in cases where treatment is performed, due to factors such as extrusion of debris to the apical region, extravasation of irrigators and intracanal medications, amount of sessions that the element is exposed, complex anatomy that makes it difficult to clean and disinfect the channel system, among others. The use of low-power laser was positive in pain remission, with benefits from its biological effects through biostimulation that has analgesic, anti-inflammatory and healing character. The present study aimed to review the literature on the effect of low-power laser on the control of post-endodontic pain. For this, searches were performed in the following databases: Scielo, Google Scholar, Pubmed, Journal of endodontics and Journal of dental lasers where 24 articles were selected after inclusion and exclusion criteria. The articles included in the research were in the period 2000 and 2021 in three languages (Portuguese, English and Spanish). This study concludes that the literature and experiments related to this theme clearly show the occurrence of a variety of biological stimuli including analgesia in the affected area, stimulation of endorphin release and inhibition of nociceptors in pain control. As limited as studies are limited, further studies on the subject should be researched for a definitive conclusion.