Objective: To study the biological effects of 585 nm pulsed dye laser (FLPDL) in the treatment of congestive scar.
Methods: By histological study, collagen VG staining and microvascular staining, we investigated the changes of collagen fibers and the density of microvessels in the congestive scars after FLPDL treatment.
Results: Histological and immunohistochemistry examinations showed that FLPDL achieved normal vascularity in the scar after over 3 times of treatment.
Conclusions: PDL treatment can change fundamentally the physiology of wound healing if applied in the early phases.