The ICDAS system promotes the concept of a personalized caries treatment plan, which is designed by combining and analyzing all the factors involved in diagnosis, prognosis, prevention and treatment of dental caries. ICDAS is a caries detection and assessment system for scoring dental caries according to their severity. ICDAS is an algorithm of clinical scores organized through a logical way used in clinical practice, dental education and research, especially in caries epidemiology.

The latest version of this system (ICDAS II) provides 7 scores for coronal primary caries, from 0 to 6, depending on lesions’ severity. There are scores for three types of temporary or permanent tooth surfaces: pit and fissure caries, free smooth surfaces and smooth surfaces. The ICDAS II system also provides some of the clinical criteria for root caries and for Caries-Associated with Restorations and Sealants (CARS). The ICDAS II scoring system has many approaches according to its purpose and usage. It has some interesting items when used in epidemiology or in clinical studies and also has a significant role when used in preventive and therapeutic clinical management of caries. Therefore, the management of different stages of dental caries may be different according to the code assigned to dental surfaces, type of the surface and the caries evolution rate.