CAROLINA BENETTI
4 resultados
Resultados de Busca
Agora exibindo 1 - 4 de 4
Artigo IPEN-doc 29624 Comparison of two light wavelengths (λ = 660 nm and λ = 780 nm) in the repair process of oral mucositis induced by ionizing radiation2023 - ANDRADE, MAIRA F.; SARDO, ARIANE V.N.; BENETTI, CAROLINA; SICCHIERI, LETICIA B.; CORREA, LUCIANA; ZEZELL, DENISE M.Photobiomodulation (PBM) has been clinically used for the prevention and treatment of oral mucositis (OM). The effect of red and near-infrared wavelengths on OM repair is still misunderstood. The aim of this study was to compare the clinical effect and tissue changes caused by 660 nm and 780 nm exposure in an experimental model of OM. Rats were submitted to gamma irradiation for induction of OM lesions and treated with 660 nm or 780 nm lasers with the same dosimetry parameters (30 mW, 7.5 J/cm2, 10 s, spot size = 0.04 mm, irradiation every two days). Clinical assessment of OM severity and histopathological analyses was performed after 8, 14, and 20 days of the ionizing radiation. OM severity was reduced in the PBM groups, especially when the red laser was used. The histopathological pattern was similar between the PBM groups, showing advanced re-epithelization and more pronounced angiogenesis and collagen deposition compared to the control. The 660 nm group showed a greater collagen matrix area than the 780 nm group at 14 days. In conclusion, PBM at 660 nm and 780 nm improved the repair of ionizing radiation-induced OM. Both wavelengths activated the angiogenesis and collagen deposition, but these tissue effects were more pronounced when 660 nm was used.Resumo IPEN-doc 14417 Caracterizacao do laser de Er, Cr:YSGG2007 - BENETTI, CAROLINA; ZEZELL, DENISE M.Artigo IPEN-doc 14980 Changes in dental enamel oven heated or irradiated with Er, Cr:YSGG laser2010 - RABELO, J.S.; ANA, P.A.; BENETTI, C.; VALERIO, M.E.G.; ZEZELL, DENISE M.This study evaluated the change that occurs in dental enamel under action of oven heating or Er,Cr:YSGG laser irradiation aiming to obtain a structure more resistant to demineralization. Enamel pow der was obtained from bovine teeth. Samples were subjected to oven heating at temperatures of 200, 400, 600, 800, and 1000°C or during laser irradiation with energy densities of 7.53, 10.95, and 13.74 J/cm2 . The infra red thermography was used to measure the surface temperature generated in the solid samples of enamel dur ing lasers irradiation. The samples were analyzed by Fourier transform infrared spectroscopy (FTIR), which shows changes on enamel oven heated or laser irradiated, due to treatments, related to carbonates, adsorbed water and hydroxyl content. These compositional effects were more evident in lased samples. These changes may alter the material properties such as its solubility, and decrese of demineralization that is important for caries prevention.Artigo IPEN-doc 19177 Influence of Er,Cr:YSGG laser on CaFsub(2)-like products formation because of professional acidulated fluorides or to dentifrice application2013 - ZAMATARO, CLAUDIA B.; ANA, PATRICIA A.; BENETTI, CAROLINA; ZEZELL, DENISE M.