1. Department of Dentistry, Endodontics and Dental Materials, School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
2. Department of Restorative Dentistry, School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil.
3. Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.