Abstract
Talon cusp (TC) and dens invaginatus (DI) are relatively rare developmental anomalies which affect the shape of teeth. TC is an additional cusp that projects predominately from the lingual surface of anterior teeth. DI is a deep surface invagination of the crown or root which is commonly detected on routine radiographic examination. Both of these anomalies are observed more frequently in permanent maxillary lateral incisor. Isolated cases of single TC and DI are extensively reported in dental literature. Occasionally two talon cusps (TCs) in the same tooth as well as double and triple invaginations in one tooth are reported separately. Coexistence of these two anomalies in a single tooth is considered extremely rare, but still there are few reported cases. However, coexistence of two TCs and double DI in a single tooth is not reported till date. We hereby report the first case of coexistence of two TCs and double DI in a single tooth of a 23 year old female and use of platelet-rich fibrin (PRF) in the management of associated radicular cyst. Also, literature on coexistence of these two anomalies in a single tooth is reviewed. Key words:Coexistence, dens invaginatus, radicular cyst, talon cusp.
Highlights
Talon cusp (TC) is a rare developmental anomaly of teeth which was first recognized in 1892 by Mitchell (1)
dens invaginatus (DI) is another rare developmental anomaly of teeth which was first described by a dentist named ‘Socrates’ in 1856 (5)
DI is commonly detected on routine radiographic examination as an infolding of enamel e430
Summary
TC is a rare developmental anomaly of teeth which was first recognized in 1892 by Mitchell (1). It is an additional cusp that projects predominately from the lingual or occasionally from the labial surface of anterior teeth (2,3) It is more common in males than females (2) and reported prevalence ranges from less than 1% to approximately 8% of the population (1,4). It mainly affects the permanent dentition (1,4) and majority of the cases [92%] are seen in the maxillary teeth (3) where it predominantly occurs in lateral incisors [55%] followed by central incisors [32%] and canines [9%] (1,3,4). The reported prevalence varies from 0.04% to 10% of the population (1,2,5) It is seen predominantly in the maxilla and the most commonly affected tooth is the permanent maxillary lateral incisor (5), followed by the central incisor (1), premolar, canine and molar (2). All ceramic crown was given on the lateral incisor
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