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有大学的,有健康网站,有牙膏厂商,所有的都说应该等。
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
这篇特别指出午餐,如果是甜食那应该马上刷牙,如果是酸食比如水果果汁应该等。
https://centennialsmiles.ca/should-you-brush-your-teeth-after-lunch/