關於飯後是否可馬上刷牙，我穀歌的結果

有大學的，有健康網站，有牙膏廠商，所有的都說應該等。

https://www.cuimc.columbia.edu/news/brushing-immediately-after-meals-you-may-want-wait

https://www.healthline.com/health/should-you-brush-your-teeth-before-or-after-breakfast

https://www.colgate.com/en-ca/oral-health/brushing-and-flossing/is-brushing-teeth-after-eating-good-for-you

這篇特別指出午餐，如果是甜食那應該馬上刷牙，如果是酸食比如水果果汁應該等。

https://centennialsmiles.ca/should-you-brush-your-teeth-after-lunch/