Dentinogenesis imperfecta type 3 (DGI-3) is a rare, severe form of dentinogenesis imperfecta (DGI) characterized by opalescent primary and permanent teeth, marked attrition, large pulp chambers, multiple pulp exposure and shell teeth radiographically (i.e. teeth which appear hollow due to dentin hypotrophy). The disease is Monarch Disease Ontology term MONDO_0007442 (dentinogenesis imperfecta type 3). Also known as: DGI-III, Dentinogenesis Imperfecta Type III, brandywine type dentinogenesis imperfecta, dentinogenesis imperfecta Shields type 3, dentinogenesis imperfecta type III, dentinogenesis imperfecta, Shields type 3, dentinogenesis imperfecta, Shields type III.