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Lasers in Medical Science

, Volume 28, Issue 3, pp 845–849 | Cite as

Effect of low-level laser therapy after extraction of impacted lower third molars

  • Maurizio FerranteEmail author
  • Morena Petrini
  • Paolo Trentini
  • Giorgio Perfetti
  • Giuseppe Spoto
Original Article

Abstract

The aim of this study is to evaluate the effectiveness of the low-level laser therapy (LLLT) in the control of pain, swelling, and trismus associated with surgical removal of impacted lower third molars. Thirty patients were randomized into two treatment groups, each with 15 patients—group test (LLLT) and a group control (no-LLLT)—and were told to avoid any analgesics 12 h before the procedure. In group test, the 980-nm diode-laser (G-Laser 25 Galbiati, Italy) was applied, using a 600-μm handpiece, intraorally (lingual and vestibular) at 1 cm from the involved area and extraoral at the insertion point of the masseter muscle immediately after surgery and at 24 h. The group control received only routine management. Parameters used for LLLT were: continuous mode, at 300 mW (0.3 W) for a total of 180 s (60 s × 3) (0.3 W × 180 s = 54 J). Group test showed improvement in the interincisal opening and remarkable reduction of trismus, swelling and intensity of pain on the first and the seventh postoperative days. Although LLLT has been reported to prevent swelling and trismus following the removal of impacted third molars, some of these studies reported a positive laser effect while others did not. All references to the use of laser therapy in the postoperative management of third molar surgery employ different methodologies and, in some, explanations as to selection of their respective radiation parameters are not given. This study has demonstrated that LLLT, with these parameters, is useful for the reduction of postoperative discomfort after third-molar surgery.

Keywords

Low-level laser therapy LLLT Extraction Third molars 

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Copyright information

© Springer-Verlag London Ltd 2012

Authors and Affiliations

  • Maurizio Ferrante
    • 1
    Email author
  • Morena Petrini
    • 1
  • Paolo Trentini
    • 1
  • Giorgio Perfetti
    • 1
  • Giuseppe Spoto
    • 1
  1. 1.Dental Materials, Department of Oral Dental DiseasesUniversity of Chieti—ItalyChietiItaly

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