Lajos Kemeny: Subcutaneous Fat Reduction using Combined Nd:YAG and Er:YAG Lasers (TightSculpting®)
The aim of this study was to investigate the efficacy and safety of combined treatments of 1064 nm Nd:YAG and 2940 nm Er:YAG (SP Dynamis, Fotona) in body shaping and skin tightening. Ten participants (10 females) were enrolled for treatment of either side of the waist and the lower part of the abdomen with the TightSculpting method. In the first step we used the PIANO mode of 1064 nm Nd:YAG with the S11-L-Runner scanning handpiece. The scanning surface was 78 mm x 84 mm and power flux density (fluence/treatment time) was 1.2 W/cm2 at a fluence of 108 J/ cm2. The temperature of the skin surface was kept at 42 degrees Celsius for 8 minutes on each treated site. The skin temperature was monitored with the special MatrixView temperature monitor. The second step was to apply the SMOOTH mode of the 2940 nm Er:YAG laser with the R11 handpiece using a spot size of 7 mm at a fluence of 2 J/cm2 and 2 Hz frequency. Each patient was treated four times every two weeks.
Body shaping and skin tightening were evaluated 2 weeks after the fourth laser treatment. The effects of body shaping from the combined laser treatment were measured by low-dose native CT, waist circumference measurement and comparative photo documentation, whereas body fat was monitored with bioelectric impedance and measurement of fat tissue with caliper fat clippers. The tissue firmness was measured by ultrasound elastography and by clinical assessment. We have found that this TightSculpting method significantly reduced the thickness of the fat tissue and enhanced the firmness of the skin.
