0 |
No or slight change in enamel translucency after prolonged air-drying (5 s) |
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1 |
First visual change in enamel (seen only after prolonged air-drying or restricted to within the confines of a pit or fissure) |
Surface of enamel is whitish/yellowish opaque with loss of luster; feels rough when the tip of the probe is moved gently across the surface; lesion is in a plaque stagnation area |
Surface of enamel is whitish, brownish, or black; enamel may be shiny and feels hard and smooth when the tip of the probe is moved gently across the surface |
2 |
Distinct visual changes in enamel |
3 |
Localized enamel breakdown in opaque or discolored enamel (without visual signs of dentinal involvement) |
4 |
Underlying dark shadow from dentine |
Probably active |
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5 |
Distinct cavity with visible dentin |
Cavity feels soft or leathery on gently probing the dentine |
Cavity may be shiny and feels hard on gently probing the dentine |
6 |
Extensive distinct cavity with visible dentine (involving more than half the surface) |