Efficacy of Fractional 2940-nm Erbium:YAG Laser Combined with Platelet-Rich Plasma Versus its Combination with Low-Level Laser Therapy for Scar Revision.

Objective: We sought to compare the safety and efficacy of combining fractional 2940-nm Erbium:YAG (Er:YAG) laser with autologous platelet-rich plasma (PRP) versus its combination with low-level laser therapy (LLLT) for enhancing the outcome of postsurgical and post-traumatic scars.

Methods: Fourty-five individuals with post-surgical or post-traumatic scars were randomly divided into three groups: Group A received four fractional Er:YAG laser sessions spaced four weeks apart along with eight sessions of intradermal PRP injections spaced two weeks apart; Group B received four fractional Er:YAG laser sessions spaced four weeks apart along with two sessions of light emitting diode (LED) weekly; and Group C received four fractional Er:YAG laser sessions spaced four weeks apart. Treatment efficacy was evaluated using clinical photographs, Vancouver Scar Scale (VSS), patient satisfaction and histopathology.

Results: Regarding vascularity following treatment and the total VSS score, there were significant differences between the studied groups, with scoring was the lowest in Group A compared to Group B and C. Patient satisfaction was the highest in Group A compared to Group B and C.

Limitations: A limitation of the current study is the short follow-up period.

Conclusion: Scar revision therapy using combined fractional Er:YAG laser with either PRP or LLLT were found to be more efficient and superior to fractional Er:YAG laser alone.