Comparative study of percutaneous collagen induction therapy and dermabrasion on post acne scars

Introduction: Acne is a self-limiting disease of pilosebaceous unit seen predominantly in adolescence, clinically characterized by papules, pustules, comedones, nodules and cysts and may result in scarring. Aim and Objectives of the study: To compare the effectiveness of percutaneous collagen induction therapy versus dermabrasion in acne scars, and for monitoring the adverse effects during and after the procedure. Materials and Method: Thirty patients with acne scars divided in to two groups A and B Group A underwent microneedling with dermaroller of 1.5mm dm, with the principle of percutaneous collagen induction. Group B underwent dermabrasion with motor assisted dermabrader using a diamond fraize. The percentage of improvement was graded with paired t test. Results: Among the 30 patients Group A 11 patients (73%) and 8 patients in group B (53%) showed significant reduction in acne scar grades. Rolling and boxcar type of scars responded well to both. In group B 3 patients had post inflammatory hyperpigmentation. Conclusion To conclude both percutaneous collagen induction therapy and dermabrasion were effective in treating acne scars but results was better with microneedling and is easy to perform and have minimal adverse effects.