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Scores for radiographical classification of lesion severity
| Score | Criteria |
|---|---|
| 0 | no radiolucency |
| 1 | radiolucency in outer ½ of the enamel |
| 2 | radiolucency in inner ½ of the enamel ± EDJ |
| 3 | radiolucency limited to the outer 1/3 of dentine |
| 4 | radiolucency reaching the middle 1/3 of dentine |
| 5 | radiolucency reaching the inner 1/3 of dentine, clinically cavitated |
| 6 | radiolucency into the pulp, clinically cavitated |
