Short term combination of pulsed dye laser and dot matrix laser for the treatment of early post burn scars

YUAN Chaoyong; LI Xirong; ZHANG Hongtu; KONG Xianghong; LI Yan; ZHANG Zhihua

doi:10.3969/j.issn.1673-7040.2025.10.007

Abstract：Objective To evaluate the efficacy and safety of 595 nm pulsed dye laser(PDL)combined with ultra-pulsed CO2 fractional laser(UFCL)in early post-burn scarring.Methods A total of 40 patients were selected from August 2022 to Januaryr 2025.Laser intervention treatment was started at 2 to 4 weeks of scar formation,fractional laser therapy was performed within 1 week after PDL treatment in the experimental group,and UFCL treatment was performed after 2 sessions of PDL treatment in the control group(20 cases in each group).Both groups were routinely treated with drugs and elastic bandage compression.PDL is treated every 4 weeks,and fractional laser is treated every 8 weeks.Before laser treatment and 6 months after scar formation,the scar score,patient satisfaction score,occurrence of complications and the number of round trips were counted.Results(1)The improvement of pain,itching,color,hardness,thickness,irregularity,vascularization,pigmentation,thickness,tension,softness and comprehensive score of patients and observers in the experimen-tal group was higher than that of the control group(P＜0.05).(2)In terms of satisfaction,the improvement rate of the experimental group was higher than that of the control group(P＜0.05).(3)In terms of adverse reactions,there was no significant difference between the experimental group and the control group(P＞0.05).Conclusion The short-term combination of 595 nm pulsed dye laser combined with ultra-pulsed carbon dioxide fractional laser shows a significant synergistic effect in the early intervention of post-burn scars,improving the appearance and function of patients,without increasing adverse reactions,and can safely and effectively improve scar hyperplasia,with high patient satisfaction.