牙膏知识分享早晚使用不同的牙膏，欧美国家80％的人会使用早晚不同的牙膏人的

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牙膏知识分享<br>
早晚使用不同的牙膏，欧美国家80％的人会使用早晚不同的牙膏人的口腔白天和晚上的环境是不一样的白天进食比较多所以口腔内残留的食物也很多，所以白天呢应该用清洁口腔去除异味增强口腔抵抗能的而晚上我们处于睡眠状态，唾液分泌不足，从而导致口腔干燥容易滋生细菌，所以晚上</td></tr></tbody></table>

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<span class="y">2016-5-4 22:13 上传</span>
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