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目的探讨茶源性氟对菌斑和唾液的影响。方法采用氟离子复合电极测定茶浸液中氟溶出量和饮茶者及非饮茶者菌斑和唾液中的氟浓度。结果档次低的茶叶氟含量高。菌斑氟含量：饮茶者高于不饮茶者；饮茶３周末时高于２周末时；饮高氟茶者显著高于饮低氟茶者（Ｐ＜０．０５）。唾液氟含量：不饮茶者较稳定；饮茶者略高于不饮茶者；饮高氟茶者略高于饮低氟茶者。饮茶者唾液氟２周末时升高，３周末时又下降。结论菌斑能够储留氟，唾液可能受外界氟的瞬时影响较大，无储留氟的能力。
Objective To investigate the effect of tea-derived fluoride on plaque and saliva. Methods Fluorine ion composite electrode was used to determine the fluoride content in tea extract and fluoride concentration in plaque and saliva of tea drinkers and non-drinkers. The results of low grade tea with high fluoride content. Plaque fluoride content: tea drinkers were higher than those who did not drink tea; drinking tea at 3 weekend was higher than at 2 weekends; drinking fluoride tea was significantly higher than those who drink low-fluoride tea (P <0.05). Saliva fluoride content: no more reliable tea; tea was slightly higher than those who do not drink tea; drinking tea fluoride slightly higher than those who drink low-fluoride tea. Tea drinking saliva fluorine 2 increased at the weekend, 3 weekend and then decreased. Conclusion Plaque can store fluoride, saliva may be more affected by the instantaneous external fluorine, without the ability to retain fluoride.