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The Appearance of Tooth in Children Ingesting Water a High Fluoride Content for a Limited Period during Early Tooth Development
T. Ish
Aichi-Gakuin University, School, of Dentistry, I-100 Kusumoto-cho, Chikusa-ku, Nagoya 464. Japan
G. Suckling
Dental Research Unit, Medical Research Council of New Zealand, P.O. Box 27007, Wellington, New Zealand
Sixteen Japanese children, inadvertently exposed to drinking water containing 7.8 ppm fluoride (F) from birth, were tiged 11 to 42 months when a low-F water supply was substituted. The appearance of the enamel of their permanent teeth was assessed 11 years later (children aged 12-15 years) and recorded using Dean's and the FDI indices. All grades of Dean's classification were seen. The enamel lesions were more severe in the older than in the younger children, in the incisal compared with the gingival halves of the teeth, and in the early- compared with the late-forming teeth. Small, localized, chalky-white areas of enamel were found at or close to the incisal margins of the anterior teeth of six children. The characteristics and the distribution, of the lesions in this study add to our knowledge of the mechanism by which fluoride produces dental fluorosis.
Journal of Dental Research, Vol. 65, No. 7,
974-977 (1986)
DOI: 10.1177/00220345860650071501
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