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Weerheijm, Gruythuysen and Van Amerongen19 (1992) criteria for clinical examination
| 0 | Sound (absence of demineralization or color change) |
| 1 | Presence of a straight dark line or demineralization on the occlusal fissure |
| 2 | Presence of a wide dark line, or a straight and dark line, combined with fissure demineralization |
| 3 | Dentine lesion |
| 4 | Restored |
| 5 | Sealed |
