1. Department of Health, School of Dentistry, Feira de Santana State University, Bahia, Brazil.
2. Department of Dentistry, School of Dentistry, Faculdades Unidas do Norte de Minas (FUNORTE), Bahia, Brazil.
3. Department of Endodontics, School of Dentistry, Rio de Janeiro State University and Grande Rio University, Rio de Janeiro, RJ, Brazil.