Dentinogenesis imperfecta

Signs of the condition are variable and there is significant overlap between different types of dentin dysplasia (DD, see this term) and dentinogenesis imperfecta. Three different types of DGI were originally described in the Shield's classification: DGI type 1, type 2 and type 3. The condition formerly known as DGI-1 is now considered to be a syndromic form of DGI associated with osteogenesis imperfecta types 1b,c, 2, 3, 4b, 9, and 10. In dentinogenesis imperfecta type 2 (DGI-2, see this term), osteogenesis imperfecta is not a feature and the condition is usually characterized by abnormal amber or opalescent dentin, worn teeth, bulbous crowns with cervical constriction, short roots, obliterated pulp chambers and root canals (visible on X-rays). Dentinogenesis imperfecta type 3 (DGI-3, see this term) is characterized by opalescent primary and permanent teeth, marked attrition, and large pulp chambers.