配合牙膏早晚刷牙能有助預防蛀牙,是眾人皆知的事情。420Please respect copyright.PENANAV8KSaZjeGv
420Please respect copyright.PENANAdEKeRBc9ZJ
420Please respect copyright.PENANAeaqXJQvJyj
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?420Please respect copyright.PENANAu08WMr4Zpc
420Please respect copyright.PENANAqnIR0fELuu
420Please respect copyright.PENANAeC7RZUrql6
(圖2)牙齒的最外層就係琺瑯質(Enamel),主要由礦物質hydroxyapatite組成。420Please respect copyright.PENANAYJXrR7tXvL
420Please respect copyright.PENANAbvx1lHMXAB
420Please respect copyright.PENANAgRS19uNwFx
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。420Please respect copyright.PENANA1hDqdKc5tV
420Please respect copyright.PENANAP0cNqKqqAN
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。420Please respect copyright.PENANARQfYglhgs3
420Please respect copyright.PENANA23ORclyygB
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。420Please respect copyright.PENANAC8aMTZrbpy
420Please respect copyright.PENANAWpytd7p5pQ
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。420Please respect copyright.PENANA7dWmylziFy
420Please respect copyright.PENANA3yPpyhBZax
(圖3)只不過,氟化物牙膏並不是萬能的,原因可從圖中得知。420Please respect copyright.PENANAsj8LFIqxTP
420Please respect copyright.PENANAhOrY71CR9I
420Please respect copyright.PENANATxnYdeEfpv
420Please respect copyright.PENANAQPijBFRct0
420Please respect copyright.PENANAhxlOovnmx5
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。420Please respect copyright.PENANAqr3WIxvGqq
420Please respect copyright.PENANAmWEywKkMIN
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/toc420Please respect copyright.PENANATgWrbTRCEb
420Please respect copyright.PENANA3FM0MUE97h
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。420Please respect copyright.PENANAmtjReYVAB8
420Please respect copyright.PENANAIxwniGU1Zy
Link:420Please respect copyright.PENANAXo8yTFQQ7f
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio420Please respect copyright.PENANAYAZvmB93Nq
420Please respect copyright.PENANADX3342ehDC
420Please respect copyright.PENANAzoQI4RIwn9
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。420Please respect copyright.PENANADbzGxBgsAZ