title: Comparison of a 585-nm pulsed dye laser and a 1064-nm Nd:YAG laser for the treatment of acne scars: A randomized split-face clinical study.
abstract: BACKGROUND
  No studies have reported a comparison of the pulsed dye laser (PDL) and the 1064-nm long-pulsed neodymium:yttrium-aluminum-garnet (Nd:YAG) laser treatment of acne scars in the same patient.
  
  
  OBJECTIVE
  To compare the efficacies of these two lasers in the treatment of acne scars.
  
  
  METHODS
  Eighteen patients received 4 sessions of PDL or Nd:YAG laser at 2-week intervals in a randomized split-face manner.
  
  
  RESULTS
  Both lasers induced notable and comparable improvement in the appearance of acne scars, particularly superficial scars, with significant reductions in the scores associated with the clinical evaluation scale for acne scarring (ECCA). Histologic evaluations revealed significant increases in collagen production and deposition following both lasers. Patient satisfaction scores concurred with these improvements. Ice-pick scars and boxcar scars tended to respond better to PDL and Nd:YAG lasers, respectively.
  
  
  CONCLUSIONS
  The number of subjects was small.
  
  
  CONCLUSIONS
  Both lasers are effective modalities for the treatment of acne scars. Optimal outcomes might be achieved considering scar types and responses to a specific laser.
authors.affiliation: Department of Dermatology, Seoul National University College of Medicine, Seoul 110-744, Korea.
authors.forename: Dong Hun
authors.initials: DH
authors.lastname: Lee
authors.forename: Yu Sung
authors.initials: YS
authors.lastname: Choi
authors.forename: Seong Uk
authors.initials: SU
authors.lastname: Min
authors.forename: Mi Young
authors.initials: MY
authors.lastname: Yoon
authors.forename: Dae Hun
authors.initials: DH
authors.lastname: Suh
mesh_terms: D000152:Acne Vulgaris / Q000150:complications*; D000328:Adult; D002921:Cicatrix / Q000473:pathology / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D054025:Lasers, Dye / Q000627:therapeutic use*; D053844:Lasers, Solid-State / Q000627:therapeutic use*; D028022:Low-Level Light Therapy / Q000379:methods*; D008297:Male; D017060:Patient Satisfaction; D016896:Treatment Outcome