Department of Dermatology, College of Medicine, Hallym University, Seoul, Korea.
Dermatol Surg. 2012 Jul;38(7 Pt 1):1017-24. doi: 10.1111/j.1524-4725.2012.02402.x. Epub 2012 Apr 9.
Fractional technology overcomes the problems of ablative lasers, such as inaccurate depth control and damage to the epidermis. Minimally invasive fractional radiofrequency microneedle devices allow for more-selective heating of the dermis.
To evaluate the clinical efficacy of fractional radiofrequency microneedle (ERM) treatment in acne scars and large facial pores.
Thirty patients with acne scars and large facial pores were enrolled. Bipolar radiofrequency energy was delivered to the skin through the electrodes of the FRM device. Skin lesions were evaluated according to grade of acne scars, Investigator Global Assessment of large pores, skin surface roughness, transepidermal water loss (TEWL), dermal density, microscopic and composite image, sebum measurement, and questionnaires regarding patient satisfaction.
The grade of acne scars and Investigator Global Assessment of large pores improved in more than 70% of all patients. Skin surface roughness, dermal density, and microscopic and composite images also improved, whereas TEWL and sebum measurement did not change.
Clinical improvement from FRM treatment appeared to be related to dermal matrix regeneration. FRM treatment may be effective in improving acne scars and facial pores.
分数技术克服了消融激光的问题，如深度控制不准确和表皮损伤。微创分数射频微针设备允许更选择性地加热真皮。
评估分数射频微针 (ERM) 治疗痤疮疤痕和大面部毛孔的临床疗效。
招募了 30 名痤疮疤痕和大面部毛孔患者。双极射频能量通过 FRM 设备的电极传递到皮肤。根据痤疮疤痕的等级、大毛孔的研究者全球评估、皮肤表面粗糙度、经皮水分流失 (TEWL)、真皮密度、微观和复合图像、皮脂测量以及患者满意度问卷来评估皮肤病变。
所有患者中超过 70%的痤疮疤痕等级和大毛孔的研究者全球评估都得到了改善。皮肤表面粗糙度、真皮密度以及微观和复合图像也得到了改善，而 TEWL 和皮脂测量没有变化。
FRM 治疗的临床改善似乎与真皮基质再生有关。FRM 治疗可能对改善痤疮疤痕和面部毛孔有效。
