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. Author manuscript; available in PMC: 2019 Jul 20.
Published in final edited form as: Methods Mol Biol. 2019;1922:511–523. doi: 10.1007/978-1-4939-9012-2_39

Table 3.

Diagnostic and classification codes for recording of type and extent of developmental defects of the enamel

Type
Code Explanation
0 Normal (no DDE)
1 Demarcated opacity
2 Diffused opacity
3 Hypoplasia
4 Demarcated opacity + diffused opacity
5 Demarcated opacity + hypoplasia
6 Diffused opacity + hypoplasia
7 Demarcated opacity + diffused opacity + hypoplasia
8 Other defect
9 Unable to score
Extent
0 Normal (no DDE)
1 < 1/3 of facial/buccal tooth surface
2 At least 1/3 but less than 2/3 of facial/buccal tooth surface
3 At least 2/3 of facial/buccal tooth surface
9 Unable to score