Several studies have investigated the ability of lasers to enhance the performance of irrigants within the root canals. Laser-activated irrigation (LAI) has been shown to outperform traditional methods in cleaning the canal and removing the smear layer. When compared to conventional irrigant agitation techniques, lasers offer clear advantages. The present review study aimed to investigate the effective removal of endodontic retreatment and endodontic sealers using lasers. A systematic review of the literature from 2010 to 2022 was conducted using databases such as Medline, PubMed, and ScienceDirect, with keywords including “endodontic retreatment,” “sealer removal,” and “lasers.” The PRISMA flowchart was used to illustrate the article selection process. Out of the 9 studies reviewed, 4 studies did not show a significant difference in sealer removal with or without lasers. However, the remaining 5 studies showed a significant improvement in the removal of sealer residue from the root canals. This suggests that lasers are an effective tool for removing most of the residual sealing materials from the root canals.
