字幕列表 影片播放 列印英文字幕 It's AumSum Time Why do our teeth turn yellow? Because our teeth need some color in their lives. No. Our teeth basically consist of three parts. The outermost part is enamel. Enamel is white in color. Beneath the enamel, there is dentine. It is yellow in color. Then comes the part called pulp, which has blood vessels and nerves. Is this the same pulp found in our fruit juices? No. Please concentrate. When we drink or eat acidic fruits and beverages like lemon, orange juice, soft drinks, etc., They erode or wear away the enamel exposing the yellow dentine and thus, making teeth appear yellow. However, did you know that some people's teeth are naturally yellowish? This is because in such people, the layer of enamel is thin causing the yellow color of the dentine to appear more clearly. Thus, making their teeth appear naturally yellow.
B2 中高級 美國腔 為什麼我們的牙齒會變黃?| 為什麼我們的牙齒會變黃? (Why do our teeth turn yellow? | #aumsum) 20 4 AumSum 發佈於 2021 年 01 月 14 日 更多分享 分享 收藏 回報 影片單字