The scar site was divided into 3 sites; combined IPL/fractional Er:YAG laser treatment site, fractional Er:YAG laser treatment site and untreated control site. At baseline, three lesions were randomized to IPL / fractional Er:YAG laser combination therapy site, fractional Er:YAG laser treatment alone site, and untreated control site. The laser treatment was conducted total three sessions, immediately at suture removal (baseline), 4 weeks after suture removal and 8 weeks after suture removal. The evaluation of scar site was conducted 3 months later after last treatment (20 weeks after suture removal).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
30
At baseline, three lesions were randomized. Topical anesthetic cream was applied to the scar 30 minutes before laser treatment. The same dermatologist performed 2,940 nm Er:YAG fractional laser. (long pulse mode, 1500mJ, 2Hz, 2 pass) The face was cooled after treatment with gauze soaked in ice water. The laser treatment was conducted total three sessions, immediately at suture removal, 4 weeks after suture removal and 8 weeks after suture removal. The evaluation of scar site was conducted 3 months later after last treatment.
At baseline, three lesions were randomized. Topical anesthetic cream was applied to the scar 30 minutes before laser treatment. The same dermatologist performed IPL. (irridation energy: 12.5J/cm2, pulse duration: 10ms, 1pass) The face was cooled after treatment with gauze soaked in ice water. The laser treatment was conducted total three sessions, immediately at suture removal, 4 weeks after suture removal and 8 weeks after suture removal. The evaluation of scar site was conducted 3 months later after last treatment.
Kangnam Sacred Heart Hospital
Seoul, South Korea
RECRUITINGPatient Observer Scar Assessment Scale
The POSAS observer consists of following 6 items: vascularity, pigmentation, thickness, surface area, relief, pliability. Each item was evaluated on a scale from 1 (normal skin) to 10 (worst scar). Finally, the POSAS total score was calculated as the sum of six items, ranging from 6 to 60.
Time frame: 4 weeks
Patient Observer Scar Assessment Scale
The POSAS observer consists of following 6 items: vascularity, pigmentation, thickness, surface area, relief, pliability. Each item was evaluated on a scale from 1 (normal skin) to 10 (worst scar). Finally, the POSAS total score was calculated as the sum of six items, ranging from 6 to 60.
Time frame: 8 weeks
Patient Observer Scar Assessment Scale
The POSAS observer consists of following 6 items: vascularity, pigmentation, thickness, surface area, relief, pliability. Each item was evaluated on a scale from 1 (normal skin) to 10 (worst scar). Finally, the POSAS total score was calculated as the sum of six items, ranging from 6 to 60.
Time frame: 20 weeks
Total Vancouver Scar scale
The VSS consists of 4 following components: vascularity, pigmentation, height ranging from 0 to 3, and pliability from 0 to 5. Score zero means the normal skin, while maximum scores indicate the worst scar.
Time frame: 4 weeks
Total Vancouver Scar scale
The VSS consists of 4 following components: vascularity, pigmentation, height ranging from 0 to 3, and pliability from 0 to 5. Score zero means the normal skin, while maximum scores indicate the worst scar.
Time frame: 8 weeks
Total Vancouver Scar scale
The VSS consists of 4 following components: vascularity, pigmentation, height ranging from 0 to 3, and pliability from 0 to 5. Score zero means the normal skin, while maximum scores indicate the worst scar.
Time frame: 20 weeks
Erythema index
The indexes were measured by placing Spectrophotometer (Cortex Technology, Had- sund, Denmark) directly on the skin lesions for two minutes in the room with constant temperature (20\~24 degree Celsius) and humidity (28\~38 percent). This measurement was performed to determine erythema.
Time frame: 4 weeks
Erythema index
The indexes were measured by placing Spectrophotometer (Cortex Technology, Had- sund, Denmark) directly on the skin lesions for two minutes in the room with constant temperature (20\~24 degree Celsius) and humidity (28\~38 percent). This measurement was performed to determine erythema.
Time frame: 8 weeks
Erythema index
The indexes were measured by placing Spectrophotometer (Cortex Technology, Had- sund, Denmark) directly on the skin lesions for two minutes in the room with constant temperature (20\~24 degree Celsius) and humidity (28\~38 percent). This measurement was performed to determine erythema.
Time frame: 20 weeks
Melanin index
The indexes were measured by placing Spectrophotometer (Cortex Technology, Had- sund, Denmark) directly on the skin lesions for two minutes in the room with constant temperature (20\~24 degree Celsius) and humidity (28\~38 percent). This measurement was performed to determine pigmentation.
Time frame: 4 weeks
Melanin index
The indexes were measured by placing Spectrophotometer (Cortex Technology, Had- sund, Denmark) directly on the skin lesions for two minutes in the room with constant temperature (20\~24 degree Celsius) and humidity (28\~38 percent). This measurement was performed to determine pigmentation.
Time frame: 8 weeks
Melanin index
The indexes were measured by placing Spectrophotometer (Cortex Technology, Had- sund, Denmark) directly on the skin lesions for two minutes in the room with constant temperature (20\~24 degree Celsius) and humidity (28\~38 percent). This measurement was performed to determine pigmentation.
Time frame: 20 weeks
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