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.