Dental Erosion and Its Growing Importance in Clinical Practice: From Past to Present

Table 3

Ordinal scale used for grading cuppings on occlusal surfaces of first permanent molars and primary molars [23].

Grade	Criteria
0	No cupping/intact cusp tip
1	Rounded cusp tip
2	Cupping ≤ 1 mm
3	Cupping > 1 mm
4	Fused cuppings: at least two cuppings are fused together on the same tooth