Table 2.

ICDAS II Scores each tooth as follows.

Code	Criterion
0	Sound tooth surface; no evidence of caries after 5 s of air drying
1	First visual change in enamel; opacity of discoloration is visible after prolong air drying. Cannot be seen when wet.
2	Distinct visual change in enamel visible when wet. Lesion must be visible when dry.
3	Localize enamel breakdown (without clinical visual signs of dentinal involvement). Seen when wet and after prolong drying.
4	Underlying dark shadow from dentine.
5	Distinct cavity with visible dentine.
6	Extensive (more than half the surface). Distinct cavity with visible dentine.

ICDAS, International Caries Detection and Assessment System score.