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Related Experiment Videos

Laser punch-out for acne scars.

S H Koo1, E S Yoon, D S Ahn

  • 1Department of Plastic and Reconstructive Surgery, Korea University Hospital, Seoul.

Aesthetic Plastic Surgery
|April 27, 2001
PubMed
Summary

High-powered CO2 laser resurfacing effectively treats acne scars. Combining techniques like laser punch-out improves deep scars, offering patients satisfactory results and smoother skin.

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Area of Science:

  • Dermatology
  • Medical Technology

Background:

  • Acne scars present a significant cosmetic challenge, often resistant to conventional treatments like dermabrasion and chemical peels.
  • Cosmetic camouflage is ineffective for pitted acne scars (ice-picked, cobblestone).
  • Laser resurfacing offers superior precision and safety compared to traditional methods for acne scar treatment.

Purpose of the Study:

  • To evaluate the efficacy of high-powered CO2 laser resurfacing with varied techniques for different acne scar depths.
  • To compare the effectiveness of laser punch-out versus even-depth resurfacing for deep acne scars.

Main Methods:

  • Seventy-one patients with acne scars were treated over two years using a high-powered CO2 laser (Ultrapulse).
  • Treatment protocols were tailored to scar depth: even-depth resurfacing for mild scars, shoulder technique for moderate scars, and laser punch-out for deep/ice-picked scars.
  • Laser parameters ranged from 300-500 mJ with multiple passes; laser punch-out used 500 mJ with 3-7 passes for ice-picked scars.

Main Results:

  • Laser punch-out significantly improved deep and ice-picked acne scars by over 80%, softening sharp margins.
  • Most patients reported high satisfaction with the laser resurfacing outcomes.
  • Erythema persisted for 3-12 months post-treatment; no hypertrophic scars were observed. Patients on oral retinoic acid required caution due to potential delayed healing.

Conclusions:

  • High-powered CO2 laser resurfacing, particularly with the laser punch-out technique, is a versatile and effective treatment for diverse acne scar types.
  • The laser punch-out method demonstrates superior improvement for deep acne scars compared to even-depth resurfacing.
  • Tailoring laser resurfacing techniques to scar morphology optimizes patient outcomes for acne scar revision.

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