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牙齒爲什麽發黃或變黑?

Posted By vickong pun     July 14, 2021    

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牙齒爲什麽發黃或變黑?

  

  牙齒爲什麽發黃或變黑?牙齒變黃、變黑有多種原因。


(1) 牙齒外面變黑:長期習慣性地飲用咖啡、濃茶、可樂?等深色 飲食都會使牙齒變黃、變黑。
其他如抽煙、嚼槟榔等不良習愷,也 會因爲日積月累的深色素沈積于牙齒表面,甚至滲透入牙齒駐琅 質內部,造成變色.

(2) 牙齒內部變黒:最常見爲四環素(及其衍生物)類的抗生素 所引起的牙齒變色.這類藥物會在牙齒發育鈣化過程中,影響牙 齒組織而造成永久的變色.從母體內的胎兒到8歲的學童都會受 到此藥物的影響,輕者牙齒部分變黃、變灰?重者牙齒整顆變黑色, 其變色的程度視服用此藥物數的多寡,以及服用此類藥時間的長 短而不同.另外,常被用來治療嚴重青春痘的半合成四環素,在青少年或成年人牙齒生成發育已完成後,也會造成變色.不可不小 心.其他如氧化物等物質的攝食過敬也會造成牙齒變色。

(3)蛀牙會使牙齒變灰、變黒:大家都知道蛀壞掉的牙齒會變 黑。
此外,老舊的補牙材料或不當的根管治療也會使牙齒變色。

(4)年齢老化會造成牙齒變黑:牙齒駐琅質隨年齢増長而變 薄,漸漸失去透明性?相對的內層黃色象牙質増厚,使牙齒越來越 黃。

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