1. Postgraduate student, Department of Dentistry, State University of Maringá, Maringá, Brazil.
2. Private practice, Ubiratã, Brazil.
3. Private practice, Maringá, Brazil.
4. Adjunct Professor, Department of Dentistry, State University of Maringá, Maringá, Brazil.
5. Associate Professor, Departament of Dentistry, State University of Maringá, Maringá, Brazil.