Table 4.
Prevalence of Dental Fluorosis (DF) and distribution of Dean's Fluorosis Index Scores among 370 sampled children in a coal-burning endemic fluorosis area, Zhijin, Guizhou, China, 2004.
| Skeletal Fluorosis Status | Dean's Fluorosis Index Scores | Prevalence§ of DF | ||||||
|---|---|---|---|---|---|---|---|---|
| Normal | Questionable | Very mild | Mild | Moderate | Severe | |||
| n | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | (%) | |
| Yes | 122 | 0 | 1 (0.3) | 3 (0.8) | 9 (2.4) | 71 (19.2) | 38 (10.3) | 99.2 |
| No | 248 | 10 (2.7) | 1 (0.3) | 4 (1.1) | 32 (8.7) | 130 (35.1) | 71 (19.2) | 95.6 |
| Total | 370 | 10 (2.7) | 2 (0.5) | 7 (1.9) | 41 (11.1) | 201 (54.3) | 109 (29.5) | 96.8 |
§Data do not include questionable DF cases.