Garg Suruchi, Vashisht Kanya Rani, Makadia Shyam
a Department of Dermatology and Aesthetic Surgery , Aura Skin Institute , Chandigarh , India.
J Cosmet Laser Ther. 2019 Aug;21(5):297-307. doi: 10.1080/14764172.2019.1605447. Epub 2019 Apr 23.
: Treating melasma is a challenge due to suboptimal efficacy and recurrence encountered with most modalities. There is inadequate literature regarding the use of lasers for melasma in Indian skin. We compared three modalities SSR (Super Skin Rejuvenation 540 nm), PQSNDY (pixel Q-switched Nd: YAG 1064 nm), and ablative pixel-Er: YAG (2940 nm) laser in melasma, amongst Indian patients. : Sixty patients of recalcitrant melasma were enrolled and randomized into three groups with 20 patients each. These were treated with SSR, low fluence PQSNDY, and pixel-Er: YAG, respectively, for five sessions at 3-week intervals. Results were evaluated using Modified melasma area severity index (mMASI) by blinded comparison of digital photographs at baseline, each visit and 6 months (i.e. 2 months after the last session). : All groups showed a highly significant reduction in the mMASI score ( < .001). Pixel-Er: YAG maximally reduced mMASI and homogeneity ( < .001), while the other groups showed a more uniform fading. Epidermal melasma had best results with SSR and PQSNDY ( < .001), while recalcitrant cases of dermal and mixed melasma with pixel-Er: YAG laser ( < .001). There was no persistent or rebound pigmentation observed. : All three modalities are effective and safe for melasma in Indian patients. Fractional technology, low fluences, adequate recovery time between sessions and a sound maintenance plan ensure efficacy and safety.
由于大多数治疗方法的疗效欠佳且易复发,治疗黄褐斑是一项挑战。关于在印度人群皮肤中使用激光治疗黄褐斑的文献并不充分。我们在印度患者中比较了三种治疗方法:SSR(540nm 超级皮肤年轻化)、PQSNDY(调 Q 开关 Nd:YAG 1064nm 像素激光)和剥脱性像素 Er:YAG(2940nm)激光治疗黄褐斑的效果。60 例难治性黄褐斑患者被纳入研究并随机分为三组,每组 20 例。分别用 SSR、低能量密度的 PQSNDY 和像素 Er:YAG 进行治疗,每 3 周治疗一次,共治疗 5 次。通过在基线、每次就诊时以及 6 个月(即最后一次治疗后 2 个月)对数码照片进行盲法比较,使用改良黄褐斑面积严重程度指数(mMASI)评估结果。所有组的 mMASI 评分均显著降低(P <.001)。像素 Er:YAG 最大程度地降低了 mMASI 和色素均匀度(P <.001),而其他组色素减退更为均匀。表皮型黄褐斑采用 SSR 和 PQSNDY 治疗效果最佳(P <.001),而难治性真皮型和混合型黄褐斑采用像素 Er:YAG 激光治疗效果最佳(P <.001)。未观察到持续性或反弹性色素沉着。所有三种治疗方法对印度患者的黄褐斑均有效且安全。分次技术、低能量密度、各次治疗之间有足够的恢复时间以及合理的维持计划可确保疗效和安全性。