Unverified90% confidenceDecision RuleTime unknown
含氟量是防龋核心指标:成人日常应选含氟1000-1500ppm(以氟化钠或单氟磷酸钠标注)的酶类牙膏,很多主打'纯天然酶'的产品不含氟,长期单用会牺牲防龋保护
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Unverified选择含木糖醇成分的口腔清洁湿巾,木糖醇浓度需≥5%才能有效抑制变形链球菌,单纯标注'含木糖醇'但排位靠后的抑菌效果有限67% similarUnverified活菌数应看'保质期末端活菌数'而非'出厂添加量',只标'添加XX亿'不标'到期活菌数'的产品,实际到嘴时活菌可能大幅衰减,成人日常保健建议选择到期活菌≥100亿CFU的产品67% similarUnverified所谓'益生菌牙膏'多数含的是益生元(如乳酸杆菌发酵产物、木糖醇)或灭活菌溶胞物,而非活菌——活益生菌无法在含氟或高渗透牙膏膏体中长期存活。选购时看成分表若标'冻干活性乳酸杆菌'需冷藏,常温膏体基本是益生元或菌代谢物65% similarUnverified抑菌率标注需看检测标准:GB/T 20944.3标准下抑菌率≥99%才算强效抗菌,≥70%为有抑菌作用;同时要求经50次水洗后抑菌率仍≥80%(耐久性指标),否则洗几次即失效65% similarUnverified选购口气清新为主要目的的含片,木糖醇含量应≥50%,木糖醇不被口腔细菌代谢产酸,同时能抑制变形链球菌,比蔗糖型含片更护齿65% similar
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