Effect of Insertion Method on Knoop Hardness of High Viscous Glass Ionomer Cements - Raggio, Daniela Prócida; Bonifácio, Clarissa Calil; Bönecker, Marcelo; Imparato, José Carlos Pettorossi; Gee, Anton J. de; Amerongen, Willem Evert van (Brazilian Dental Journal, 2010)