Influence of physical assessment of different light-curing units on irradiance and composite microhardness top/bottom ratio - Morimoto, Susana; Zanini, Renata Alo Maluza; Meira, Josete Barbosa Cruz; Agra, Carlos Martins; Calheiros, Fernanda Calabró; Nagase, Denis Yudi (Odontology, 2016)