1. Department of Oral Dignosis and Dental Radiology, Piracicaba Dental School, State University of Campinas, 13414-018 Piracicaba, SP, Brazil
2. Department of Oral Radiology, School of Dentistry, University of São Paulo, 05508-9000 São Paulo, SP, Brazil
3. Department of Morphology, Stomatology and Physiology, Ribeirão Preto School of Dentistry, University of São Paulo, 14040-900 Ribeirão Preto, SP, Brazil