1. Department of Dentistry, State University of Maringá, Maringá, Brazil
2. Dental Radiology and Stomatology, Department of Dentistry, State University of Maringá, Maringá, Brazil
3. Craniofacial Pain Applied to Dentistry, Dentistry Faculty, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
4. Biostatistics, Department of Statistics, State University of Maringá, Maringá, Brazil
5. Department of Oral Diagnosis, Area of Oral Radiology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil