中国人の永久歯エナメル質表層における歯面部位別フッ素濃度分布

DOI 参考文献26件

書誌事項

タイトル別名
  • Site-specific Fluoride Distribution of Enamel Surfaces in Extracted Permanent Teeth Obtained from Chinese Subjects

この論文をさがす

抄録

Fluoride concentrations of enamel surfaces in 9 upper and 11 lower central incisors,8 upper and 8 lower first molars of subjects in Beijing were examined in order to clarify the site differences in fluoride concentrations in the enamel that may be related to the caries status of associated tooth surfaces. Using the acid etched micro-sampling technique described by Weatherell et al. (1973), fluoride concentrations at 2 different sites, the labial(La) and lingual(Li) for incisors, as well as 4 different sites, the mesiobuccal(MB), distobuccal(DB), mesiolingual(ML) and distolingual(DL) for molars, assumed to be developing at the same period in each tooth, were determined. The tooth surfaces were partly covered with fingernail varnish to expose a window of enamel (about 1 mm2), dissolved with 0.5 M-HC104 and washed with buffer solution. Fluoride concentrations in sample solutions were measured using a fluoride ion electrode. Using a regression curve, comparisons of fluoride concentrations were made at depths of 1,3,5,10,20, and 30μm.<BR>The results were as follows.<BR>1. There were no statistical site differences in the F concentration of the enamel surfaces in each tooth at any depth.<BR>2. We regarded the highest possible site of fluoride concentration of all the twelve sampling sites as 100%. Statistical site differences were seen at the depths of 1,3, and 5 um using the Kruskal-Wallis test (p<0.05). The relatively high fluoride concentrations of the site, such as Li in the lower incisor, DB in the upper molar and DL in the lower molar, were in close proximity to the main salivary gland orifices and also accumulate more dental plaque. The results indicated that site-specific fluoride concentrations of the enamel surface may reflect differences in exposure to saliva and plaque, resulting in differences in the local cariostatic challenge.

収録刊行物

参考文献 (26)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ