Skin Fractional Scar Treatment with a New Carbon Dioxide Scanner: Histological and Clinical Evaluation.

Background: The mechanism of action of fractional carbon dioxide (CO 2 ) laser in the management of skin scarring is stimulation of collagen and fibroblasts in the dermis, resulting in remodeling and shrinking of the skin. Objective: The purpose of this research is to assess the safety and performance of a new CO 2 laser scanner for treatment of acne scars. Methods: The study was carried out on 20 patients of both sexes, with a mean age of 25.7 ± 6.7 years. To assess the performance and safety of this new CO 2 scanner, a preclinical histological evaluation was done. A clinical evaluation of acne scars was performed using Goodman and Baron's quantitative global acne scarring grading system (GBQGASGS) and a crusting scale where crusting scores ranged from 1 = none to 4 = severe. Digital photographs were taken to obtain esthetic results. Results: GBQGASGS showed a significant improvement in patients' scars and the treatment was well tolerated, with no lasting side effects. Conclusions: The new scanner seems to be an effective and safe device for skin scarring treatment, speeding up the healing time of scars.