The perfect way to validate findings in the diagnosis of caries. Caries in its early stages and hidden caries can thus be reliably detected. This enables minimally invasive treatments, the patient is subjected to less stress, and more tooth substance is retained. Quick and reliable knowledge - Children and adolescents in particular have fissure caries in nearly 80% of all cases. Iceberg syndrome: 90% of caries is invisible (under an intact enamel surface and in the proximal region). The DIAGNOdent pen augments the dentist’s eye and x-rays: 90% of all cases are identified Applications: Fissure carries, proximal caries, periodontitis.