Photobiomodulation Alleviates Postoperative Discomfort After Mandibular Third Molar Surgery.

Purpose: Surgical removal of mandibular third molars is associated with some degree of postoperative pain, trismus, and facial swelling. The purpose of the study was to evaluate the effect of photobiomodulation in reducing these postoperative side effects after surgical removal of mandibular third molars.

Materials And Methods: This randomized, double-blinded, split-mouth pilot study was carried out in the Department of Oral and Maxillofacial Surgery, Post Graduate Institute of Dental Sciences, Rohtak, India, among patients with impacted mandibular third molars. In each patient, 1 side was treated by photobiomodulation and the other side received placebo. Photobiomodulation was performed by intraoral and extraoral application of an 830-nm and 30-mW laser at different time points. Pain, trismus, and facial swelling were evaluated at all time points. The number of analgesics taken also was recorded. The data were analyzed using descriptive, bivariate and multivariate statistics.

Results: The study was conducted in 25 patients (56% male patients) with a mean age of 22.16 ± 4.60 years. There were 50 sites divided equally into both groups. The sites treated with photobiomodulation showed a significant reduction in pain and swelling (P < .05) compared with the sites in the placebo group. Moreover, an increase in mouth opening was noted after photobiomodulation compared with that in the placebo group, but this was not statistically significant (P > .05).

Conclusions: The results of this study suggest that photobiomodulation is effective in reducing pain and swelling after mandibular third molar surgery. Hence, it can be used as an alternative and effective modality after surgical removal of mandibular third molars, thereby improving the quality of life of the patients.