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Choosing between intraoral or extraoral, red or infrared laser irradiation after impacted third molar extraction
Author(s) -
Sierra Simone Oliveira,
Deana Alessandro Melo,
Bussadori Sandra Kalil,
da Mota Ana Carolina Costa,
Ferrari Raquel Agnelli Mesquita,
do Vale Katia Llanos,
Fernandes Kristianne Porta Santos
Publication year - 2016
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.22488
Subject(s) - trismus , molar , medicine , swelling , irradiation , dentistry , laser , surgery , orthodontics , optics , pathology , physics , nuclear physics
Background and Objective Swelling and trismus are complications experienced by nearly all subjects after undergoing oral surgery for the removal of impacted teeth. The main purpose of this paper was to compare the effects of photobiomodulation therapy (PBMT) at two different wavelengths applied intra‐orally and extra‐orally on facial swelling and trismus in the postoperative period following the extraction of impacted mandibular third molars. Study Design/Materials and Methods Sixty subjects were randomly divided into five groups, taking into account the type of laser therapy applied after surgery (intraoral or extraoral irradiation with 660 nm laser; intraoral or extraoral irradiation with 808 nm; and sham irradiation). Two and seven days after the surgery, two blinded evaluators measured the subjects’ faces (swelling), and mouth opening (trismus). Results There was a statistically significant interaction between the irradiation site and wavelength (swelling and trismus were smaller if the red laser was applied intra‐orally or if infrared laser was applied extra‐orally). The intra‐group analyses showed that 808 nm laser applied extra‐orally favored reductions in postoperative facial swelling and trismus, although the inter‐group comparisons revealed no statistically significant differences. Conclusion Besides energy parameters, the combination of irradiation site and wavelength drive the results of phototherapy after the removal of impacted teeth. Lasers Surg. Med. 48:511–518, 2016. © 2016 Wiley Periodicals, Inc.