A 4-year-old child presents with one fewer tooth than usual, and an abnormally large tooth exhibiting two crowns and two root canals. What is the dental anomaly called?

Explanation

The condition described, where two teeth are joined resulting in one less tooth and a large tooth with two crowns and root canals, is known as fusion. Dilaceration refers to an abnormal bend in the root, gemination involves a single tooth attempting to divide, and concrescence is the joining of teeth by cementum only.