1. Department of Preventive and Restorative Dentistry, Discipline of Endodontics, Araçatuba School of Dentistry São Paulo State University ‐ UNESP Araçatuba SP Brazil
2. Department of Prosthodontics and Periodontology, Bauru School of Dentistry University of São Paulo – USP Bauru SP Brazil
3. Division of Biomaterial and Biomedical Sciences, Department of Oral Rehabilitation and Biosciences Oregon Health & Science University, OHSU Portland Oregon USA