1. Lagerweij MD, van Loveren C. Declining caries trends: are we satisfied? Curr Oral Health Rep. 2015;2:212–7.
2. Petersen PE, Bourgeois D, Ogawa H, Estupinan-Day S, Ndiaye C. The global burden of oral diseases and risks to oral health. Bull World Health Organ. 2005;83:661–9.
3. da Silveira Moreira R. Epidemiology of dental caries in the world. In: Virdi PM, editor. Oral health care - pediatric, research, epidemiology and clinical practices. Rijeka: InTech; 2012. p. 149–68.
4. Koposova N, Eriksen HM, Widstrom E, Handegard BH, Pastbin M, Koposov R. Caries prevalence and determinants among 12-year-olds in north-West Russia and northern Norway. Stomatologija. 2013;15:3–11.
5. Kojima A, Ekuni D, Mizutani S, Furuta M, Irie K, Azuma T, et al. Relationships between self-rated oral health, subjective symptoms, oral health behavior and clinical conditions in Japanese university students: a cross-sectional survey at Okayama University. BMC Oral Health. 2013;13:62.