Compare the efficacy and safety profile of microneedling radiofrequency and that of bipolar radiofrequency treatment for acne scar.
Efficacy and safety of microneedling radiofrequency for acne scar Efficacy and safety bipolar radiofrequency treatment for acne scar compare the efficacy and safety profile of microneedling radiofrequency and that of bipolar radiofrequency treatment for acne scar
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
23
Microneedling radiofrequency device is composed of 49 insulated microneedle which emit radiofrequency from the needle tip. This radiofreqeuncy generates dermal heat which evokes biological effect.
bipolar radiofrequency instrument gives out bipolar radiofrequency from the hand piece tip. This bipolar radiofrequency generates dermal heat which has a lot of bilogical effect.
Department of Dermatology, Seoul National University College of Medicine
Seoul, South Korea
Global assessment of acne scar
5-point grading of acne scar quartile assessment of acne scar improvement through comparing the photos taken before treatment and after treatment
Time frame: 12 weeks
ECCA
quantitative assessment of acne scar ECCA assessment is established by previous article. this method quantifies severity of acne scar by counting the number of acne scar categorized by their shape. Then, the number of scars are multiplied by weighing factors determined by scar types. ECCA is the total sum of these points. please refer the Dreno et al, Dermatology, 2007;214:46-51
Time frame: 12 weeks
Adverse effect
adverse effects were measured by Epithelization Scale. ES is the total sum of evaluation of three components after wounding. please refer this article Min et al, Wound Repair and Regen, 2014;22(2):212-9
Time frame: 12 weeks
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