Influence of the resin cement color on the shade of porcelain veneers after accelerated artificial aging - Magalhães, Ana Paula Rodrigues de; Siqueira, Patrícia Correia de; Cardoso, Paula de Carvalho; Souza, Joao Batista de; Fonseca, Rodrigo Borges; Pires-de-Souza, Fernanda de Carvalho Panzeri; Lopes, Lawrence Gonzaga (Revista Odontológica do Brasil Central, 2013)