Caries research is an extremely broad topic, from pathogenesis to prognostic factors for undergoing certain treatments. The biological process of caries is reasonably well known and thus, caries should be preventable. However, caries is still prevalent, particularly in disadvantaged groups and children. Current management is focused on early diagnosis and preventive treatment.The caries detection tools aim the early detection of caries and prevent the progression of caries from demineralization to cavitation. None of the mentioned techniques alone are sufficient for diagnosis of dental caries. In the future, with the development of the diagnostic tools, small changes in the tooth structure will be detected and the dental structures will be protected by implementing preventive treatments.