CLINICAL EVOLUTION IN THE TREATMENT OF SOLAR LENTIGO WITH THE USE OF Q-SWITCHED ND:YAG LASERS 532 NM VERSUS 1,064 NM

Abstract

Solar lentigo is a common aesthetic problem. In this sense, the present research allowed to evaluate the clinical evolution in the treatment of solar lentigo with the use of Q-Switched Nd:YAG 532 nm versus 1,064 nm lasers. Methods. A quasi-experimental comparative study was carried out, with a sample of  24 patients of both sexes, aged between 35 and 80 years, diagnosis of solar lentigo and phototypes according to Fitzpatrick's scale between I-V. Patients with phototype VI, malignancies, peels, sun exposure or recent laser treatment, pregnant or breastfeeding, were excluded. The sample was divided into two groups: Nd:YAG  532 laser  therapy (n=12)  and  Nd:YAG 1,064  platform therapy (n=12). One to two sessions were performed according to individual response, using qualitative and quantitative data to assess the response to treatment using the VISIA Professional and Intelligent 3D facial analyzer. Data analysis was obtained using Student's t-test with a significance of 0.05. Regarding the effectiveness of the treatment, it was only statistically significant in relation  to the improvement of UV spots (p˂0.05), clinical improvement of color in favor of the Nd:YAG 532 Laser and depth in favor of the Nd:YAG 1.064 Laser. A single session was required in most cases, only hyperpigmentation occurred as a complication, being statistically significant for the group that was treated with the Nd:YAG 1,064 platform. It is concluded that both devices are effective, well tolerated and generated patient satisfaction.