![]() Due to distortion and protrusion of the enamel organ during tooth development (Oehlers 1957), absence of signaling molecules for morphogenesis and therefore, genetic factors are involved (Grahnen et al. The rapid and aggressive proliferation of a part of the internal enamel epithelium (Ruston 1937), Atkinson (1943) suggested that the problem was the result of external forces exerting an effect on the tooth germ. Kronfeld (1934) suggested that the invagination results from a focal failure of growth of the internal enamel epithelium, external forces exerted on tooth germ. Over the past decades, several theories have been proposed to explain the etiology of dental coronal invaginations. The etiology of dens invaginatus (DI) malformation is controversial and remains unclear. 'Dens in dente' is a developmental malformation incident due to the in folding of enamel and dentin or accentuation of the lingual pit of an incisor before calcification sets in. ![]() ![]() This article is a case report of Talons cusp with DI involving maxillary lateral incisors in a 16-year-old patient. However, still in literature, there are a few reports cases available. Concurrently, the coexistence of these two anomalies in a single tooth is considered extremely rare. These anomalies most commonly may be observed in the maxillary lateral tooth. Talon cusp 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. Dens invaginatus (DI or dens in dente) and Talons cusp or dens evaginatus are relatively rare developmental anomalies which affect the shape of teeth. ![]()
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