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先天缺牙如何正畸治療?

Posted By vickong pun     July 10, 2021    

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先天缺牙如何正畸治療?

  

  先天缺牙如何正畸治療?恒牙先天缺牙並不少見,有時先天缺失不止一個牙齒,全部先天缺失稱先天性無牙頜,非常罕見。
先天性缺牙可能與遺傳或胚胎發育異常有關,是人類進化過程中出現咀嚼器官退化的現象之一。

牙齒先天缺失對牙頜的影響視缺失數目和部位而異,常見的後果是牙列出現大小不等的間隙、缺牙隙的鄰牙傾斜、上下牙關系紊亂等。
如缺失牙數較多,則使牙槽骨生長不足,導致面下部變短,影響功能和美觀。

牙齒是否真正屬先天缺失,必須通過x線診斷才能最後確定,有時牙齒沒有正常萌出並非先天缺失牙胚,而是因為間隙不足或牙位不正不能萌出而埋伏在頜骨內造成的。

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