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3. Enamel hypoplasia = Aplasia
= Internal and external hypoplasia
= Hypocalcification
= Pits
= Grooves
= Missing enamel

4. Discolored enamel = Pigmentation
= Tetracycline staining

5. Developmental defects of enamel หมายความรวมถึง Enamel defects, Dental fluorosis,

Enamel opacities, Hypoplasia และ Discolored enamel และมีคำจำกัดความ (Definition)

ที่ใชดังนี้ (26)

1. Opacity = Qualitative defect in enamel

= Abnormality in translucency of enamel
2. Hypoplasia = Quantitative defect in enamel

= Reduced thickness of enamel
3. Discolored enamel = Abnormal appearance in enamel
4. Developmental defects of enamel = Disturbances in hard tissue matrices and

their mineralization during odontogenesis

ภาพที่ 65 Modified DDE index general purpose epidemiological studies (screening surveys)
ฟนซี่ 11 code 11 (11) ฟนซี่ 21 code B1 (61)
ที่มา: Drummond BK, Kilpatrick N, editors. Planning and care for children and adolescents with enamel defects. Berlin Heidelberg:
Springer-Verlag 2015.

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