1. Oral Radiology Principles and Interpretation;White,2004
2. The prevalence of oral and dental anomalies in children with developmental disturbances;Jukie;Acta Stomatol Croat,2002
3. The etiology of orthodontic problems;Proffit,2000
4. Prevalence of dental anomalies in orthodontic patients;Thongudomporn;Aust Dent J,1998
5. Studies of permanent tooth anomalies in 7886 Canadian individuals;Shah;J Can Dent Assoc,1978