不幸的是，它们往往没有科学依据作支撑。如果牙膏不含氟我是不会推荐的。
Unfortunately they tend to have little science behind them. If a toothpaste is fluoride free I would not recommend it.
不含氟的全效牙膏也许有助于预防牙龈疾病，但不能预防蛀牙。
A holistic toothpaste without fluoride may help with gum disease prevention but not tooth decay.
不含氟的全效牙膏也许有助于预防牙龈疾病，但不能预防蛀牙。
A holistic toothpaste without fluoride may help with gum disease prevention but not tooth decay.
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