THE ACCELERATION OF WOUND HEALING IS NOT ATTRIBUTED TO LASER SKIN TRANSMISSION

抄録

A study was carried out to observe the acceleration of wound healing using different wavelengths of laser, and to assess the role played by the amount of laser transmitted by the skin during wound healing in rats. An oval full thickness skin wound was created aseptically with a scalpel on the shaved back of the two groups of rats, control and treatment groups. Treatment was carried out with HeCd, Argon, HeNe, Krypton and GaAlas lasers, at doses of 10, 20, and 30 J/cm² with a treatment schedule of 3 times per week. Our results show that the rate of wound healing acceleration in days (AccD) were 15.09%, 22.93%, 29.24%, 14.54%, 23.21% and 20.37% using optimum stimulation dose of 20 J/cm² and wavelengths of 442 nm, 488-514 nm, 632 nm, 670 nm, 780 nm and 830 nm. The results suggest that HeNe laser with 632nm was the most effective in promoting wound healing when compared to other wavelengths used in this study. The measurement of laser skin transmission indicated that this would rise correspondingly as the wavelength of the laser in the spectral range of 442 nm to 830 nm. The results suggest that laser skin transmission is not proportionate to the amount of laser biostimulation. The acceleration of wound healing may not be attributed to skin transmission.