ABSTRACT
Photobiomodulation (PBM), also commonly referred to as low-level laser therapy (LLLT), uses light energy to elicit biological responses from the cell and normalize cell function. 40 persons with periapical lesions were selected and were assigned randomly into two groups.Group I - Conventional root canal therapy and low-level laser therapy. Group II - Conventional root canal therapy Root canal therapy was completed, and radiographs were obtained and assessed 3, 6, and 9 months postoperative. VAS pain scale was assessed postoperatively on 0, 7th, and 14th days respectively. An independent t-test was used for the evaluation of the data. No significant difference was noted for postoperative pain and PAI scale between both groups Significant difference was noted in the reduction of the periapical lesions for 3 and 9 months follow up, but was not significant for 6 months. The healing was better in Group I which received Low-level laser therapy with the conventional root canal treatment. Low-level laser therapy can be the newer additional treatment modality that can be applied to the periapical lesion for its faster healing.