[A basic study and clinical trial of 585 nm pulsed dye laser in the treatment of congestive scars].

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.