This paper describes oral findings in an adult population with osteogenesis imperfecta (OI) in Norway (n=94). All participants underwent a structured interview and an oral examination. Panoramic radiographs were analyzed. The findings were compared with data from other Nordic epidemiological studies. Seventeen individuals (19%) had clinical signs of dentinogenesis imperfecta (DI). Persons with OI had twice as many missing teeth as the general population, and the number of endodontically treated teeth was higher than in the general population. All persons in the study had an acceptable state of tooth tissue loss. Almost all (97%) of the participants in the study group visited a dentist or a dental hygienist regularly. The results of the study indicated a low prevalence of clinical DI compared with previous reported studies. Oral health was not as good in the population with OI when compared with the general population, although daily oral health habits were good and dental visits were regular.