13th World Congress for Laser Dentistry

26-28, April 2012

Barcelona, Spain

Meeting Abstract

Sponsors: World Federation for Laser Dentistry

-  Poster 6

TITLE: Effect of low level laser (GaAlAs) therapy on postsurgical healing of full thickness wounds in rabbits.

AUTHORS: Alipanah Y, Asnaashari N, Anbari F.

Shahid Beheshti University Of Medical Sciences

SOURCE: Med Oral Patol Oral Cir Bucal. 2012 May 1;17(Supplement1):S154.

* doi:10.4317/medoral.17643654

http://dx.doi.org/10.4317/medoral.17643654

Abstract

Introduction: The use of low level lasers has gained popularity in the medical sciences over the past 30 years. The therapeutic benefit of a low level laser depends on photochemical and photobiological effects. Furthermore they do not lead to an increase of temperature in the exposed tissue. The use of LLLT for wound healing remains a controversial topic. Some clinical studies have shown that LLLT can accelerate the healing of injured tissues.

Aim of study: Our purpose was to determine the efficacy of low level laser therapy (LLLT) on wound healing in rabbits.

Method and material: Sixteen rabbits were sedated and given a general anesthetic. A full thickness flap was used bilaterally at the buccal gingiva maxilla in a naturally toothless area, and then sutured. A low level pulsed GaAlAs laser (wavelength: 685 nm, power: 45 mW, radiant exposure: 3 J/cm², frequency: 10 Hz, duty factor: 80%; application time: 1 min) was used on the left side. The right side was not lasered as a control.

Tissue specimens from each site on days 3, 7, and 14 after surgery were examined microscopically.

Results: Less inflammation was observed on days 3 and 7 in the treatment group (p < 0.01). The inflammation rate on both sides was the same on day 14 (p > 0.05).

Conclusion: LLLT using optimal parameters can acce-lerate full thickness wound healing.