Fig. 7
Effect of LLLT on wound size 24 h after irradiation. Linear mean length with the confidence interval for each wounded area is presented. The linear mean length of the control positive and the cells irradiated with 0.1, 0.2, and 1.2 J/cm2 were significantly decreased compared to the two other groups (p < 0.0005). There was also a significant difference noted in the linear mean length of the control negative compared to the cells irradiated with 10 J/cm2 (p = 0.0026). a,b Values with different letters are significantly (P < 0.05) different