1. Endodontic Postgraduate Program, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara, Mexico
2. Department of Endodontics and Dental Research Group, Iguaçu University, Nova Iguaçu, Rio de Janeiro, Brazil
3. Postgraduate Program in Dentistry, University of Grande Rio, Duque de Caxias, Rio de Janeiro, Brazil