配合牙膏早晚刷牙能有助預防蛀牙,是眾人皆知的事情。487Please respect copyright.PENANAoV9gTuYDtm487Please respect copyright.PENANAXNvYvTnzfy
487Please respect copyright.PENANAZPkWGRtrsM
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?487Please respect copyright.PENANA1sWRGFYuqi
487Please respect copyright.PENANAVTYzTH8Utr
487Please respect copyright.PENANAJwotzuaHQn
(圖2)牙齒的最外層就係琺瑯質(Enamel),主要由礦物質hydroxyapatite組成。487Please respect copyright.PENANAF8XvqClfOg487Please respect copyright.PENANANfLRNnNQKC
487Please respect copyright.PENANADIzEwLCgPX
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。487Please respect copyright.PENANAKg3Xtf3g3i
487Please respect copyright.PENANAG9Ie58h72U
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。487Please respect copyright.PENANAVVDSkvQiU6
487Please respect copyright.PENANArwomuXcpSH
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。487Please respect copyright.PENANAU1j8c1zaT1
487Please respect copyright.PENANACIJeQj22Zw
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。487Please respect copyright.PENANAO9qGJUazDl
487Please respect copyright.PENANAxI5VclXfD4
(圖3)只不過,氟化物牙膏並不是萬能的,原因可從圖中得知。487Please respect copyright.PENANAeClFOcR8qz487Please respect copyright.PENANA79yrPZBGPh
487Please respect copyright.PENANAU8iBnuMJLo
487Please respect copyright.PENANArqgQuKtOGN
487Please respect copyright.PENANAWQG2PG7sHj
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。487Please respect copyright.PENANAUnig8u4vCG
487Please respect copyright.PENANAcGRoi7fAT7
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/toc487Please respect copyright.PENANA9xbe6tAYtk
487Please respect copyright.PENANATpxkq6uwBf
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。487Please respect copyright.PENANAVTc726VuuZ
487Please respect copyright.PENANACLCxPNSkyR
Link:487Please respect copyright.PENANAxGaNyOS4KJ
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio487Please respect copyright.PENANAhoG58iu7U0
487Please respect copyright.PENANAvqrd0UBFQj
487Please respect copyright.PENANAMAfDMod3li
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。487Please respect copyright.PENANAyRbSv7r22e