Avaliação do efeito terapêutico do microagulhamento nas cicatrizes deprimidas de acne através da ultrassonografia cutânea

Abstract

Microneedling is one of the techniques used to treat acne scars. So far there are only studies in the literature stating clinical and histopathological results, there are no studies that assess their results through short and medium term imaging methods. The aim of this study was to quantitatively and qualitatively evaluate the therapeutic effect of microneedling on depressed acne scars by high-frequency cutaneous ultrasonography (HFSU) and Doppler mapping. It was an experimental, prospective and uncontrolled study, in which 29 individuals with depressed scars were evaluated through the HFSU and submitted to the quality of life questionnaire (DLQI) and the visual analogue scale (VAS). The individuals underwent the HFSU and completed the DLQI and VAS on the day of the procedure (D0), 1 month after (D30), and after 6 months (D180) of a single microneedling session with the 2.5mm roller. There was an improvement in the parameters evaluated by the HFSU, such as epidermal thickness and echogenicity, dermis echogenicity, and increased vascularization (doppler mapping), as well as a statistically significant reduction in EVA and DLQI values (p<0.05). In conclusion, microneedling in a single session was able to improve acne scars by decreasing the thickness of the epidermis and improving its shape, increasing dermis echogenicity and increasing vascularity, documented by the USAF and Doppler mapping, as well as, by the great satisfaction of individuals treated with a reduction in EVA and DLQI (p<0.05)