Two teeth that are united after root formation is complete, joined only by cementum (with separate, distinct crowns), describes which developmental dental anomaly?

Concrescence is the union of two teeth via cementum alone, typically occurring after root formation, often related to trauma, crowding, or inflammation in the area. Fusion involves union of the dentin/pulp of two developing tooth germs (usually resulting in one fewer tooth than expected), and gemination is an attempt at a single tooth germ to divide (resulting in a bifid crown with a normal tooth count).