每次电影里男主早晨给女主端吃的到床上， 就觉得怎么这么不讲卫生。。。

口腔里不论刷牙与否都残留细菌，保护牙齿是饭后刷牙
mouton 发表于 3/19/2019 8:48:33 AM [url=http://forums.huaren.us/showtopic.aspx?topicid=2399517&postid=80020406#80020406][/url]

所以饭前把它们吞肚子里？

看来牙医们说的很一致，都是饭后
hhwubian 发表于 3/19/2019 10:22:53 AM [url=http://forums.huaren.us/showtopic.aspx?topicid=2399517&postid=80020913#80020913][/url]

饭后 Waterpik 就好啊 再说中午也要刷牙啊 。

饭后立马刷对牙不好， 吃了acidic food 要等30分钟刷。
it's a good idea to brush your teeth before eating an acidic food and to drink a glass of water when you are finished to wash away the acids.

if you've consumed anything acidic, you should avoid brushing your teeth for at least 30 minutes. Foods containing citric acid , like oranges, grapefruits and lemons, weaken tooth enamel. Brushing too soon after eating them can damage the enamel in its weakened state.

COLGATE 自己的网站上写的。
[url=https://www.colgate.com/en-us/oral-health/basics/brushing-and-flossing/is-brushing-teeth-after-eating-good-for-you-0313]https://www.colgate.com/en-us/oral-health/basics/brushing-and-flossing/is-brushing-teeth-after-eating-good-for-you-0313[/url]

家人有牙医。 他也这么说的。 You may be surprised to learn that brushing immediately after a meal may actually harm your teeth. Acids created by food can wear away your protective enamel leaving your teeth at their weakest state right after you eat.