%0 Journal Article
%T Effectiveness of low-intensity laser photobiomodulation in reducing inflammatory events (pain, edema, and trismus) after orthognathic surgery: a systematic review and meta-analysis of randomized clinical trials.
%A Passos RM
%A Pimentel KF
%A de Barros Silva PG
%A Sousa FB
%A Costa FWG
%A Cetira Filho EL
%J Clin Oral Investig
%V 0
%N 0
%D 2023 Aug 23
%M 37610457
%F 3.606
%R 10.1007/s00784-023-05222-9
%X <B>OBJECTIVE: </B>This systematic review aimed to answer whether, in (P) individuals undergoing orthognathic surgery, (I) low-level laser therapy (LLLT) during or shortly after the surgical procedure compared to (C) pharmacologic therapy alone or no therapy for improvement of post-intervention complications relieves (O) postoperative inflammatory events in (S) randomized clinical trials.<BR><B>METHODS: </B>A preliminary electronic search was conducted for references with language following a Latin (Roman) alphabet in seven databases index, and gray literature without restriction on language or publication period. Risk of bias was performed by RoB 2.0 tool, and meta-analysis used mean differences (MD) for edema and mouth opening and standardized mean differences (SMD) for pain scores (p < 0.05, Revman®).<BR><B>RESULTS: </B>A total of 91 control patients and 114 LLLT patients were included. The wavelengths ranged from 660 to 940 nm, and the applied energy density was between 5 and 100 J/cm2 at mostly extraoral distributed points. LLLT significantly reduced edema (MD =  - 4.27, CI95% - 5.13 to - 3.41 mm) in the period from 5 days to 2 weeks postoperatively (p < 0.001) and showed strongly reduced pain scores (SMD =  - 1.37, I95% =  - 1.99 to - 0.75) between 1 day and 5 weeks (p < 0.001), without significantly interfering with mouth opening (p = 0.110). Despite the low risk of bias, high heterogeneity among studies (I2 > 70%) and small sample sizes made the certainty of GRADE evidence low.<BR><B>CONCLUSIONS: </B>This SR demonstrated that LLLT effectively controls pain and edema after orthognathic surgery.<BR><B>CONCLUSIONS: </B>Systematic review that summarizes the use of photobiomodulation on orthognathic surgery.