Nonablative 1450-nm diode laser in the treatment of facial atrophic acne scars in type IV to V Asian skin: a prospective clinical study.
BACKGROUND
There is presently little published data on the clinical effectiveness of nonablative lasers in the treatment of atrophic acne scars and the safety of their use in patients with darker skin types.


OBJECTIVE
This study aims to determine the clinical effectiveness and safety of the nonablative 1450 nm diode laser with cryogen cooling spray in the treatment of facial atrophic acne scars in Type IV-V Asian skin.


METHODS
This is a prospective non-comparative open study. 4 to 6 laser treatment sessions were performed on patients with atrophic acne scars. Final clinical assessment was performed 6 months after the last treatment.


RESULTS
57 patients were evaluated. Patient's self-assessment of scar improvement as compared with doctor's assessment was as follows: patients who completed 4 treatments (15.7% vs 6.6%), patients who completed 5 treatments (20% vs 7.9%) and patients those who completed 6 treatments (17.3% vs 5.0%). Main side effects were mild to moderate pain during the procedure, transient erythema, and hyperpigmentation which occurred in 39% of treated patients.


CONCLUSIONS
The nonablative 1450 nm diode laser may be effective in achieving mild to moderate gradual clinical improvement in the treatment of facial atrophic acne scars. The procedure is associated with minimal downtime and is safe for use in darker skin types IV and V.
Chua
Sze-Hon
SH
National Skin Center, Singapore, Singapore. shchua@nsc.gov.sg
Ang
Por
P
Khoo
Lawrence S W
LS
Goh
Chee-Leok
CL
D000152:Acne Vulgaris / Q000150:complications / Q000532:radiotherapy*; D000328:Adult; D001284:Atrophy; D002921:Cicatrix / Q000209:etiology / Q000532:radiotherapy*; D005006:Ethnicity; D005145:Face; D005260:Female; D006801:Humans; D053685:Laser Therapy; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012846:Singapore; D016896:Treatment Outcome