1. Ribeirão Preto Dental School, University of São Paulo, Department of Dental Materials and Prosthodontics, Avenida do Café S/N, Monte Alegre, Ribeirão Preto, São Paulo 14040-904, Brazil.
2. Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Department of Toxicological and Bromatologic Clinical Analyses, Avenida do Café S/N, Monte Alegre, Ribeirão Preto, São Paulo 14040-903, Brazil.