Laser de érbio 2940nm fracionado no tratamento do fotoenvelhecimento cutâneo da face - avaliação após 15 meses / Use of 2940 erbium fractional laser in the treatment of facial photodamaged skin. 15 months follow-up

RESUMO

Introdução: Os procedimentos fracionados ablativos oferecem resultados consistentes, com menor tempo de recuperação e menor risco de efeitos adversos do que os ablativos não fracionados. Objetivo: Avaliar os efeitos de uma nova tecnologia fracionada ablativa com laser de érbio (2.940nm) no fotoenvelhecimento facial. Métodos: Pacientes femininas com fotodano moderado na face foram submetidas ao tratamento com laser de érbio 2,940 nm fracionado (Palomar Inc., Burlington MA). Os parâmetros variaram de 5 a 9 mJ/µb com duração de pulso de 250 microssegundos a 5 milissegundos. Foram realizadas duas a seis passadas com 50% de sobreposição. As avaliações clínicas ocorreram 3 dias, 1,4,8 e 12 semanas, e 15 meses após o procedimento. Três dermatologistas não envolvidos no estudo avaliaram a melhora global do fotodano antes e após 3 meses, através de fotografias digitais e de acordo com a seguinte escala grau 1=melhora menor que 25%; grau 2=melhora de 26-50%; grau 3=melhora de 51-75% e grau 4=melhora de 76 a 100%. Resultados: Doze pacientes (n=12) femininas, com idade variando de 48 a 78 anos foram incluídas.A avaliação após 3 meses, demonstrou que 23% das pacientes obtiveram grau 3, 55% grau 2 e 22% grau 1. Melhora significativa (grau > 2) foi observada em 78% e 63% das rugas periorbitárias e periorais respectivamente. Dois pacientes desenvolveram hiperpigmentação pós-inflamatória transitória. Conclusão: O laser com érbio fracionado mostrou-se eficaz e seguro no tratamento do fotoenvelhecimento moderado. Use of 2940 Erbium fractional laser in the treatment of photodamaged skin clinical evaluation and follow up

ABSTRACT

Introduction: Fractional ablative procedures offer more robust results, with shorter recovery time and lower risk of adverse effects compared to non-fractional ablative methods. Objective: To evaluate the effects of a new fractional ablative technology employing Erbium laser (2,940nm) in facial photoaging. Methods: Female patients with moderate facial photodamage were subjected to treatment with a 2,940nm fractional Erbium laser (Palomar Inc., Burlington MA).The parameters varied from 5 to 9 mJ/µb, with pulses of a duration from 250 microseconds to 5 milliseconds.Two to six passes with a 50% overlap were carried out.The clinical evaluations occurred 3 days, 1,4,8 and 12 weeks, and 15 months after the procedure.Three dermatologists who were not involved in the study evaluated the global improvement of the photodamage before and 3 months after the procedures, by reviewing digital pictures, and classified the results according to the following scale grade 1 = improvement less than 25%; grade 2 = improvement of 26% to 50%; grade 3 = improvement of 51% to 75% and grade 4 = improvement from 76 to 100%. Results: Female patients (n =12), aged 48 to 78 were studied.After 3 months, 23% of the patients were classified as grade 3, 55% as grade 2 and 22% as grade 1. Significant improvement (grade 2) was observed in 78% and 63% of the periorbital and perioral wrinkles, respectively.Two patients developed transitory post-inflammatory hyperpigmentation. Conclusion: The fractional Erbium laser was shown to be effective and safe in the treatment of moderate photoaging