This study compared differences in dental maturation and dental age in Scandinavian children born in 1969–1973 and 2005–2010. The study was based on 130 ethnic Scandinavian children, who were divided in two groups corresponding to the time periods and matched on age and sex. Each group consisted of 65 children (30 girls, 35 boys, mean age 9.29 years and 9.30 years, respectively). Dental maturation was analysed by orthopantomographs, in accordance with Demirjian and Haavikko. Dental age was analysed by orthopantomographs in accordance with Demirjian. Boys and girls were analysed separately by linear regression analysis adjusted for age. For the children born in 2005–2010, teeth matured significantly earlier (Demirjian: 0.21 maturities, CI 95% 0.11–0.31, p < 0.000. Haavikko: maxilla: 0.39 maturities, CI 95% 0.21–0.56, p < 0.000. Mandible: 0.42 maturities, CI 95% 0.17–0.67, p = 0.001) and the dental age was significantly higher (Demirjian: 6.04 months, CI 95% 0.23–0.77, p < 0.000) in comparison with the children born in 1969–1973. In conclusion, the teeth of Scandinavian children born 2005–2010 matured significantly earlier than those of children born in 1969–1973. The results may prove valuable in forensic dentistry, pedodontics, and for the timing of pedodontic and orthodontic treatment.