The following information may help to address your question:
There are three types of dentinogenesis imperfecta.
Type I: occurs in people who have osteogenesis imperfecta, a genetic condition in which bones are brittle, causing them to break easily.
Type II and type III: usually occur in people without another inherited disorder. Some families with type II also have progressive hearing loss. Type III was first identified in a population in Brandywine, Maryland. Some researchers believe that dentinogenesis imperfecta type II and type III, along with a similar condition called dentin dysplasia type II, are actually just different forms of a single disorder.