Signs of Osteogenesis Imperfecta?

Would you get dentures at a young age if you had to? Cause I am 20 and my enamel is gone I have already tried to restore it(I cannot afford a dentist at the moment). When I can what are my options? Are there more options besides dentures to have normal teeth? My step sister with osteogenisi imperfecta said I should get a bone density test.