1. Fusion of maxillary incisors across the midline: clinical report;Bazan;Pediatr Dent,1983
2. Dental anomalies in children: a clinical and radiographic survey;Buenviaje;J Dent Child,1984
3. A supernumerary tooth fused to a maxillary permanent central incisor;Good;Pediatr Dent,1980
4. Congenital dental anomalies occurring in 3,557 children;Clayton;J Dent Child,1956
5. The prevalence of supernumerary teeth in primary and mixed dentitions;Luten;J Dent Child,1967