1. Department of Dentistry, Ingá University Center, Maringá, Brazil.
2. Department of Diagnosis and Surgery, São José dos Campos School of Dentistry, São Paulo State University, São José dos Campos, Brazil.
3. Postgraduate Program in Dentistry, Cruzeiro do Sul University, São Paulo, Brazil.
4. Department of Oral Medicine, State University of Londrina, Londrina, Brazil.