配合牙膏早晚刷牙能有助預防蛀牙,是眾人皆知的事情。310Please respect copyright.PENANAcRKXnOhviF
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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?310Please respect copyright.PENANAeaGswU2xq2
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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。310Please respect copyright.PENANA9ew5zOtA5w
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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。310Please respect copyright.PENANAiioqp2hABX
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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。310Please respect copyright.PENANAH6f31fqY23
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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。310Please respect copyright.PENANAxXH5kbQAo6
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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。310Please respect copyright.PENANAjVq1ByAsh3
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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。310Please respect copyright.PENANAodxH1Y2VVS
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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。310Please respect copyright.PENANAXIv3XEA52x
310Please respect copyright.PENANA3T8t8xPsID
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/toc310Please respect copyright.PENANAey8aM6ZHvj
310Please respect copyright.PENANAmqyJH1NiTY
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。310Please respect copyright.PENANAuZkLNlCJSF
310Please respect copyright.PENANA8cd6RpgeDc
Link:310Please respect copyright.PENANADCsotIkNEp
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio310Please respect copyright.PENANAwbrVowEFpY
310Please respect copyright.PENANAQR6URjigNu
310Please respect copyright.PENANAhgknOFRyCd
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。310Please respect copyright.PENANAwRGtCIcxH6
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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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