Mitra Abdolvand - Student of MD, Joundishapour University of Medical Sciences, Ahvaz, Iran

Background: Low level laser therapy (LLLT) utilizes a pencil-like beam of electromagnetic waves of a single frequency and defined wavelength. Low-level laser therapy applications include acceleration of wound healing, enhanced remodeling and repair of bone, restoration of normal neural function following injury, pain attenuation, and modulation of the immune system. The aim of this study is evaluate the effect of low level laser therapy on wound healing. Methods: This review article was carried out by searching studies in PubMed, Google Scholar, ScienceDirect, by using the search terms level laser therapy, wound healing, LLLT . The search was completed through October 2017. In this review, 45 articles that are associated with subject, were found and of these, 19 articles were applied. Results: In examining the effects of LLLT on cell cultures in vitro, some articles report an increase in cell proliferation and collagen and elastic fibers. Other studies showed, the extent of edema and the number of inflammatory cells were reduced with LLLT. On average, follow-up at 8 days after treatment revealed that the laser group had smaller wounds than the treated and the untreated wounds. Also, pain relief and functional recovery of patients treated with LLLT were significantly improved comparing to untreated patients. Conclusion: The LLLT resulted show that low power lasers promote wound healing in both experimental models of tissue repair and human cases of wounds and ulcers. LLLT may produce an indirect healing effect on surrounding tissues. There are no absolute contraindications for LLLT; however, it is always better to be cautious when treating patients in high-risk categories. These data indicate that LLLT is an effective modality to facilitate wound contraction of wounds.

Low Level Laser Therapy, Wound Healing, LLLT