1. Supernumerary teeth in the permanent dentition;Grahnen;Odontol Rev,1961
2. Congenital dental anomalies occurring in 3,557 children;Clayton;J Dent Child,1956
3. I. Frequency and distribution of supernumerary teeth among 21,609 patients;Bodin;Dentomaxillofac Radiol,1978
4. The prevalence of supernumerary teeth in primary and mixed dentitions;Luten;J Dent Child,1967
5. II. Supernumerary molars;Bodin;Dentomaxillofac Radiol,1978