Distribution of fluoride in human deciduous cementum.

概要

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There is no information about the fluoride distribution in human deciduous cementum, although that of human permanent teeth was recently reported in detail. This study was undertaken to determine the fluoride distribution in human deciduous cementum, comparing the profiles of fluoride concentration in right and left teeth. 10 pairs of sound deciduous canines extracted from subjects aged 6-9 were examined. The teeth were sectioned and cementum specimens were removed from the buccal or lingual surface of sections. The fluoride concentration in each specimen was determined in samples removed sequentially from the root surface to the cementum-dentine junction, using an abrasive microsampling technique. The fluoride and phosphorus contents of each sample were determined and fluoride concentrations were calculated from the F : P ratios obtained. The concentrations of fluoride were highest at or near the cement surface and decreased towards the interior. On the other hand, the distribution patterns of fluoride in contralateral teeth from the same subject were roughly similar, although the concentrations and patterns of fluoride were different in each subject. It was concluded that each individual has a characteristic fluoride distribution in the deciduous cementum.
有限責任中間法人日本口腔衛生学会の論文