Table 2.
Grade | Criteria |
---|---|
0 | No visible changes, developmental structures remain, macromorphology intact. |
1 | Smoothened enamel, developmental structures have totally or partially vanished. Enamel surface is shiny, matt, irregular, “melted,” rounded or flat, and macromorphology generally intact. |
2 | Enamel surface as described in grade 1. Macromorphology clearly changed, facetting or concavity formation within the enamel, no dentinal exposure. |
3 | Enamel surface as described in grades 1 and 2. Macromorphology greatly changed (close to dentinal exposure of large surfaces) or dentin surface exposed by ≤1/3. |
4 | Enamel surface as described in grades 1, 2 and 3. Dentin surface exposed by >1/3 or pulp visible through the dentin. |
Note: approximal erosion, presence of “shoulder” and “cuppings” should be recorded.