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a 11 (11): first 1= white/cream demarcate opacities, last 1 = extent of defect <1/3;

b B1 (61): B/6= demarcate and hypoplasia, 1= extent of defect <1/3;

c 41 (21): 4/2 = diffuse opacity (patchy), 1= extent of defect <1/3;

d A2 (52) = demarcate and diffuse, 2 = extent of defect 1/3-2/3

·ÕèÁÒ: Commission on oral health research and epidemiology. A review of the

developmental defects of enamal index (DDE index). International dental journal

1992;42:411-26.

¡ÒõÃǨ ÁÕËÅÑ¡¡Òôѧ¹Õ é [27]

14 13 12 11 21 22 23 24

46 36

1. ¿˜¹·Õè¨ÐµÃǨ áËŒ§ ËÃ×Í à»‚Â¡¡çä´Œ
2. ¿˜¹Ë¹ŒÒ µÃǨ´ŒÒ¹ labial & occlusal

3. ¿˜¹ËÅѧ µÃǨ´ŒÒ¹ buccal, lingual & occlusal
4. ¿˜¹á·Œº¹ 㪌¿˜¹ incisors, canines, first premolar

5. ¿˜¹á·ŒÅ‹Ò§ 㪌¿˜¹ first molar
6. ¿˜¹¹íéÒ¹Áº¹ 㪌¿˜¹ incisors, canines

7. ¿˜¹¹íéÒ¹ÁÅ‹Ò§ 㪌¿˜¹ first molar
8. ¶ŒÒ໚¹ Single defect áÅÐÁÕ diameter ¹ŒÍÂ¡Ç‹Ò 1 mm. ¨ÐäÁ‹Å§ºÑ¹·Ö¡

9. ¶ŒÒ¤ÇÒÁ¼Ô´»¡µÔ¤Ãͺ¤ÅØÁ¶Ö§ 2/3 ¢Í§´ŒÒ¹ ¨ÐäÁ‹Å§ºÑ¹·Ö¡à¾ÃÒÐäÁ‹¹Ò¹¡ç¨Ðà¡Ô´¡ÒÃᵡËÅØ´

ÍÍ¡ä»

10. ÁÕ code ·Õè㪌ºÍ¡¢Íºà¢µ¢Í§¤ÇÒÁ¼Ô´»¡µÔ ´Ñ§áÊ´§ã¹µÒÃÒ§·Õè 3

53 52 51 61 62 63

84 74

75