1. Graduate Program in Dentistry University of Western São Paulo Presidente Prudente Brazil
2. Department of Endodontics Araçatuba Dental School UNESP – University Estadual Paulista Araçatuba Brazil
3. Dental School of Presidente Prudente University of Western São Paulo Presidente Prudente Brazil
4. Department of Basic Science Araçatuba Dental School UNESP – University Estadual Paulista Araçatuba Brazil