What is the most probable diagnosis for a deep enamel-lined pit found on the lingual surface of a maxillary lateral incisor?

Explanation

A deep invagination of enamel on the lingual surface of a maxillary lateral incisor is characteristic of dens in dente. Enamel hypoplasia refers to defective enamel formation, talon’s cusp is an extra cusp on the tooth, and enamel pearls are enamel deposits typically found on root surfaces.