0 - No caries | 3 - Caries on same tooth surface but not associated with ART restoration or ART sealant extension. |
1 - Caries associated with ART restoration | 4 - Caries on tooth surface not associated with ART restoration or ART sealant |
2 - Caries associated with ART sealant and with loss of sealant extension to ART restoration | 9 - Impossible to diagnose. |