Bogle Melissa A, Ubelhoer Nathan, Weiss Robert A, Mayoral Flor, Kaminer Michael S
SkinCare Physicians, Chestnut Hill, Massachusetts, USA.
Lasers Surg Med. 2007 Mar;39(3):210-7. doi: 10.1002/lsm.20472.
Non-ablative monopolar radiofrequency technology delivers heat to the deep dermis and subdermal layers of the skin to improve facial laxity. The purpose of this study is to evaluate the multiple pass, low fluence treatment algorithm for lower face laxity.
STUDY DESIGN/MATERIALS AND METHODS: Sixty-six subjects with moderate facial laxity were treated with a maximum of 5 passes over the lower face and neck. Treated areas were evaluated using the Leal Laxity Classification System and by independent photographic assessment. Measurements of skin stiffness and energy absorption were taken with the BTC2000 device.
The average treatment level was 62.0 (83 J/cm(2)) with 556 pulses per treatment. At the 6 month follow-up visit, 92% of patients had a measurable improvement in overall appearance. Independent photographic review revealed improvement in 84% of subjects at 6 months. Objective measures utilizing the BTC2000 device demonstrated improvement that diminished with time.
The low-fluence, multiple pass technique is an effective algorithm for radiofrequency skin tightening.
非消融单极射频技术将热量传递至皮肤深层真皮和皮下层，以改善面部松弛。本研究的目的是评估用于改善下面部松弛的多次低能量密度治疗方案。
研究设计/材料与方法：66名有中度面部松弛的受试者接受治疗，在下面部和颈部最多进行5次治疗。使用Leal松弛分类系统并通过独立的照片评估对治疗区域进行评估。用BTC2000设备测量皮肤硬度和能量吸收。
平均治疗能量密度为62.0（83 J/cm²），每次治疗556个脉冲。在6个月的随访中，92%的患者整体外观有可测量的改善。独立的照片评估显示，84%的受试者在6个月时有改善。使用BTC2000设备的客观测量显示改善情况随时间而减弱。
低能量密度、多次治疗技术是一种有效的射频皮肤紧致方案。
