The effect of low energy laser irradiation on wound healing

Han, Chang-su; Kim, Myung-cheol

Korean Journal of Veterinary Research 1997;37(3):629-637.

Chang-su Han, Myung-cheol Kim

College of Veterinary Medicine, Chungnam National University

저에너지 레이저 조사가 창상치유에 미치는 영향

한창수, 김명철

충남대학교 수의과대학

Abstract

This study was performed to determine the optimal dose of laser energy for wound healing. The skin wound with 8mm diameter was induced over the lumbar vertebrae of the rats, and wound squares, scab hardness, hematologic findings and histopathlogic findings according to irradiation of laser energy were studied. 1. Wound square was significantly reduced at Day 1 (p<0.01), 2 (p<0.01), 3 (p<0.05), 7 (p<0.01) and 8 (p<0.05), respectively in experimental groups, especially group II, compared with control group. 2. Scab hardness was significantly increased at Day 1 (p<0.01), 2 (p<0.01), 3 (p<0.05), 5 (p<0.01) and 7 (p<0.01), respectively in experimental groups, especially group II, compared with control group. 3. In hematological findings, red blood cells and white blood cells in experimental group were increased according to the lapse of days, but they were not significant. 4. In histopathologic findings, experimental groups, especially group II, revealed early scab formation, early appearance of phagocytes and fibroblast, rapid growth of granulation tissue and collagen, and promotion of wound healing in the result.

Key Words: laser, rat, wound, healing