Which developmental condition is characterized by supernumerary (extra) teeth and delayed eruption?

Cleidocranial dysplasia (CCD) is an autosomal dominant skeletal dysplasia caused by mutations in the RUNX2 gene. Classic features include: (1) hypoplastic or absent clavicles (allowing patients to approximate their shoulders at the midline); (2) multiple supernumerary teeth; (3) delayed eruption or failure of eruption of permanent teeth; (4) wide cranial sutures and fontanelles; and (5) short stature. Treatment requires surgical extraction of retained primary teeth and supernumerary teeth, followed by orthodontic/prosthetic rehabilitation. Ectodermal dysplasia is characterized by hypodontia (fewer teeth), not supernumerary teeth.