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智齒有哪些危害?(上)

Posted By vickong pun     December 8, 2020    

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一、智齒冠周炎

   智齒是牙列中最後萌出的牙,因萌出位置不足,牙冠部分外露於牙齦之外,部分被牙齦覆蓋。牙齦與牙體之間形成一個狹窄較深的盲袋,容易積存食物碎屑和細菌,一般刷牙漱口難以清洗乾淨。

   當全身抵抗力下降、細菌毒力增強時,便可引起牙冠周圍組織炎症。影響咀嚼功能,造成吞咽困難,食慾減退,嚴重者可引起頭痛、周身不適等。

二、鄰牙破壞:

   由於現在人咀嚼的食物越來越精細,所以頜骨發育越來越小,而最後一顆萌出的牙齒阻生齒往往沒有足夠的萌出空間,造成了阻生齒的異位萌出、阻生的情況,而這種阻生最常見的就是傾斜向前萌出或者水平向前萌出。

   這兩種情況本身會有一個向前的力,在阻生齒萌出的同時會頂住前方的鄰牙。隨着它的不斷生長,會使前方第二磨牙遠中不斷齲壞,甚至會出現第二磨牙的牙髓炎導致第二磨牙脫落。


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