fa Morphometry Morphometry Original Original <strong>Purpose:</strong> The aim of present study is to evaluate the effect of a pulsed infrared low-level laser on wound healing in an experimental induced diabetic rat model.<strong>Materials and Methods:</strong> 18 adult rats were divided into 2 healthy and 1 diabetic groups. Diabete was induced by intraperitoneal administration of streptozotosin in diabetic group. Two full - thickness skin incisions were made on the dorsum of rats. The wounds were divided into laser treated and sham wounds (groups). Laser-treated wounds of healthy animals were submitted to a pulsed-infra red 890 nm laser with 80 Hz frequency and 0.2 J/cm2 (200 s) energy densities for each point of wounds of the first and second experimental groups respectively. Laser-treated wounds of diabetic animals were submitted to the same laser with 0.2 J/cm2 (200 s) energy densities for each point of laser-treated wounds. On day 15 a sample of each wound were extracted and were submitted into tensiometerical test. Maximal force (MF, N) of samples was calculated.<strong>Results</strong>: Laser irradiation with 0.2 J/cm2 significantly increased maximum force of healthy (p=0.021) and diabetic (p=0.000) laser-treated wounds. Moreover p values of statistical analysis of laser-treated wounds of diabetic rats were better than those of healthy rats.<strong>Conclusion</strong>: Laser treatments with a pulsed infrared laser with 0.2 J/cm2 energy densities significantly accelerated wound healing in both healthy and diabetic rats. However, its positive effect , vas significantly better in diabetic rats. Infra-Red Low-Level Laser Therapy, Diabetes, Skin, Wound Healing Process, Biomechanical Examination 0 0 http://anatomyjournal.ir/browse.php?a_code=A-10-304-233&slc_lang=fa&sid=1 Zeinolabedin Sharifian 10031947532846006271 10031947532846006271 No Mohammad Bayat 10031947532846006272 10031947532846006272 Yes Morteza Alidoust 10031947532846006273 10031947532846006273 No Rohollah Gazour 10031947532846006274 10031947532846006274 No Masoumeh Dadpay 10031947532846006275 10031947532846006275 No Reza Masteri Farahani 10031947532846006276 10031947532846006276 No