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埋伏牙如何正畸治療?

Posted By vickong pun     July 8, 2021    

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埋伏牙如何正畸治療?

  

  埋伏牙如何正畸治療?牙齒埋伏阻生主要有兩種原因,
一是因該牙萌出時牙列間隙不足或已完全無間隙,
另一原因是牙胚在發育過程中因某些原因而發生位置和方向的異常。

牙齒埋伏不但使牙列因牙數不足而影響排列和關係的建立,同時埋伏牙也可能壓迫附近的牙根而使一些牙齒發生根吸收。
埋伏牙如有基本正常的萌出方向,且埋伏是因間隙不足引起,可以通過擴展牙弓或拔除相對不重要的牙齒,為其提供足夠的間隙,埋伏牙就可能逐漸萌出。

如果埋伏牙位置和方向異常,即使間隙足夠也難以萌出,或因年齡偏大,牙根已發育完成,而無萌出動力,則應在x線定位診斷後行開窗手術暴露其牙冠,然後以正畸方法將其逐漸牽引入列。
當然,如x線檢查確定埋伏牙本身發育明顯異常,如牙冠畸形或嚴重的彎根牙,就沒有開窗牽引的價值,可考慮拔除。

如埋伏牙距根區較遠,對牙列影響不大,挖除手術可能造成較大的創傷或傷及鄰牙,也可暫不處理,定期觀察有無動態變化。

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