1 Post-Graduation Program, Dental School, Federal University of Pelotas, Pelotas, Brazil. Electronic address: [email protected].
2 Post-Graduation Program, Dental School, Federal University of Pelotas, Pelotas, Brazil.
3 Post-Graduation Program, Dental School, Federal University of Pelotas, Pelotas, Brazil; Graduation Program, Dental School, Federal University of Pelotas, Pelotas, Brazil.