1 Department of Pathology and Dental Clinic, Health Sciences Center, Federal University of Piauí, Campus Universitário Ministro Petrônio Portella, Teresina, PI, 64049-550, Brazil.
2 Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University Hospital, Saarland University, Kirrberger Str. 100, Building 73, 66421, Homburg, Saar, Germany. jvfrazao92@hotmail.com.
3 Santo Amaro University, Rua Isabel Schmidt 349, São Paulo, SP, 04743-030, Brazil.
4 Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.