1. Department of Oral Diagnosis; Division of Oral Radiology; Piracicaba Dental School; University of Campinas; Piracicaba; São Paulo; Brazil
2. Department of Oral Diagnosis; Division of Oral and Maxillofacial Surgery; Piracicaba Dental School; University of Campinas; Piracicaba; São Paulo; Brazil
3. Department of Oral Radiology; Division of Oral Radiology; School of Dentistry; Federal University of Bahia; Salvador; Bahia; Brazil