1. Department of Operative Dentistry Endodontics and Dental Materials Bauru School of Dentistry University of São Paulo‐USP Bauru SP Brazil
2. Faculty of Science Department of Mathematics São Paulo State University‐UNESP Bauru SP Brazil
3. Department of Pediatric Dentistry Orthodontics and Public Health Bauru School of Dentistry University of São Paulo‐USP Bauru SP Brazil