Table 1 Dental erosion index criteria [26]

Code 1

Enamel only – loss of enamel surface gives characteristic of a smooth, glossy appearance with shallow chipped enamel.

Code 2

Enamel and dentin – loss of enamel, exposing dentin

Code 3

Enamel, dentin and pulp – extensive loss of enamel and dentin with pulpal exposure.

Code 9

Assessment cannot be made – when the tooth is either missing or has a large restoration depend on a score measure.