Photobiomodulation therapy for enhanced wound and Scar healing: visual and statistical evaluation.

To evaluate the effectiveness and safety of Photobiomodulation Therapy (PBMT), formerly referred to as Low-level laser therapy (LLLT), in promoting enhanced wound and scar healing, and to optimize treatment parameters for various scar types. Sixty participants were assigned to three groups based on the type and duration of their scars. Group A (recent scars < 6 months) received between 3 and 8 PBMT sessions, while those with recent surgical scars received up to 15 sessions. Group B (old scars > 1 year) received 12 to 15 sessions, and Group C (acne scars) received 8 to 10 sessions. All treatments used a continuous red diode laser at 660 nm with a power density of 15.6 mW/cm². For old and surgical scars, each treatment area was irradiated for 6 min, delivering a dose of 5.6 J/cm². For recent and acne scars, exposure time was 4 min with a dose of 3.7 J/cm². Sessions were conducted two to three times per week, depending on group allocation. Statistical analysis showed significant improvements in scar color, size, and patient satisfaction across all groups (p < 0.01). Recent scars responded most favorably in terms of appearance and contour. No adverse effects or complications were reported during the study. This study confirms the efficacy and safety of PBM using 660 nm diode lasers for scar management. The findings provide evidence-based guidelines on dosage and the number of sessions needed for optimal clinical results.