配合牙膏早晚刷牙能有助預防蛀牙,是眾人皆知的事情。314Please respect copyright.PENANAMnpyqb0Rih
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但你又知唔知為何牙膏普遍會含有氟化物(Fluroide)? 其用意究竟何在呢?314Please respect copyright.PENANAzFJ1By3R06
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(圖2)牙齒的最外層就係琺瑯質(Enamel),主要由礦物質hydroxyapatite組成。314Please respect copyright.PENANAS1LJrGQWK5
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口腔內的細菌,會從我們進食的食物中攝取糖份,並消化為乳酸,間接導致口水的pH值下降。314Please respect copyright.PENANAVukbKEPmqm
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當口水pH值低至5.5以下的時候,琺瑯質裡頭的礦物質便會開始被分解,而口腔細菌就會乘虛而入,造成蛀牙。314Please respect copyright.PENANA0prrSSJZrO
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而牙膏的氟化物能有助抑壓這個酸性分解作用,同時當pH回復正常的時候,氟化物亦能幫忙建構所失去的礦物質。314Please respect copyright.PENANAfKXKTnHa5u
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氟化物還有各種不同的機制預防蛀牙,這裡只列出其中的一項。314Please respect copyright.PENANAKxzma3ZuF7
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(圖3)只不過,氟化物牙膏並不是萬能的,原因可從圖中得知。314Please respect copyright.PENANAywjvq4YDAe
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314Please respect copyright.PENANALUTwNYYfzU
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。314Please respect copyright.PENANAxP1ycB3iFW
314Please respect copyright.PENANAzD4hv1G7We
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc314Please respect copyright.PENANAi19mRHvUX6
314Please respect copyright.PENANAPtSl5kcSqv
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。314Please respect copyright.PENANANlp6ec1dp5
314Please respect copyright.PENANAfDxOECwuCx
Link:314Please respect copyright.PENANAuvgo7g7UHa
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio314Please respect copyright.PENANA56kmgWmm4f
314Please respect copyright.PENANARXIkFhQMU0
314Please respect copyright.PENANAOsoF0y5VoI
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。314Please respect copyright.PENANAeJmqYaljrT
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科普專欄–薯不揀單
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #69
深入淺出–牙膏內為何會添加氟化物?
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