ICDAS Decision Tree Yes More than half tooth involved? Yes Code 6 No Code 5 Yes Code 4 Cavity with exposed dentin? No Yes Undermining shadow? No Caries visible when wet? Yes Dry and reexamine No Is there microcavitation? Code 3 No Dry and reexamine Any opacity or discoloration? Yes No © JK Mitchell, DDS, MEd. Information from ICDAS website. Code 1 Code 0 Lesion confined to base of fissure? Yes Code 1 No Code 2 © JK Mitchell, DDS, MEd. From ICDAS website
