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Background: Anomalies in primary dentition are often found to be associated with anomalies in permanent dentition. Aims: This study was performed to evaluate the prevalence of supernumerary teeth, hypodontia, double teeth, and talon cusp in the primary dentition, and their effect on succedaneous permanent teeth. Materials and Methods: In this prospective cross-sectional study, we clinically investigated 2757 Bengali speaking nursery children (1474 girls and 1283 boys), of age four to six years, at their respective schools, and the presence of supernumerary teeth, hypodontia, double teeth, and talon cusp in the primary dentition were recorded. Children with anomalous primary teeth were further subjected to periapical and panoramic radiographic examination, to determine the status of the underlying permanent teeth. Results: The total prevalence of all anomalies in this study was 1.8%. A total of 38 children (21 girls and 17 boys) had anomalies. The prevalence of anomalies was as follows: Supernumerary teeth (0.4%), hypodontia (0.5%), double teeth (0.4%), and talon cusp (0.07%), in both sexes combined. Radiographic examination showed 50% of the patients (19 children) had anomalies in the permanent dentition. Conclusions: Anomalies in primary dentition exhibited a correlation with anomalies in permanent dentition. [ABSTRACT FROM AUTHOR]

Failure of eruption of multiple permanent teeth is uncommon. This may be attributed to some local and systemic factors. In general, systemic factors are responsible for eruption failure of multiple teeth whereas the local causes tend to affect one or few teeth. In this article, we describe a rare case of multiple impacted permanent teeth of normal series and supernumeraries in a 14-year-old girl not associated with any syndrome. [ABSTRACT FROM AUTHOR]

Regional odontodysplasia (RO) is an uncommon nonhereditary developmental anomaly of dental hard tissues derived from ectoderm and mesoderm. The condition is more common in females, may affect primary and permanent dentitions with the maxilla, involves twice as frequently as mandible. The exact etiology of RO is unknown. Diagnosis is usually made by clinical and radiographic findings, sometimes supplemented with histopathologic examination. Clinically, teeth are hypoplastic with surface pits and grooves, and have brownish or yellowish discoloration. On the radiograph, there is reduced radiodensity of enamel and dentin with a lack of contrast between them. In this article, we described a case of a 3½-year-old girl with RO. The left maxillary quadrant was affected. The patient also showed eruption failure. Treatment of RO is, to a great extent, individualized. As the condition was asymptomatic, the present case was managed conservatively. [ABSTRACT FROM AUTHOR]