Page 91 - Ebook

ตารางที่ 19 Modified DDE index for use in screening survey and general purpose

epidemiological studies (19)

screening survey (19) general purpose epidemiological studies (19)

Code Code

Normal 0 Normal 0

Demarcated opacity 1 Demarcated opacities

Diffuse opacity 2 white / cream 1

Hypoplasia 3 yellow / brown 2

Other defect 4 Diffuse opacities

Combination Diffuse – lines 3

Demarcated and diffuse 5 Diffuse – patchy 4

Demarcated and hypoplasia 6 Diffuse – confluent 5

Diffuse and hypoplasia 7 Confluent / patchy + staining 6

All three defects 8 + loss of enamel

Hypoplasia

Pits 7

Missing enamel 8

ตารางที่ 20 การลงรหัส Extent of defect Any other defects 9

Extent Code Combination

Normal 0 Demarcated and diffuse A

<1/3 1 Demarcated and hypoplasia B

1/3 - 2/3 2 Diffuse and hypoplasia C

at least 2/3 3 All three defects D

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