\u5148\u5929\u7f3a\u7259\u5982\u4f55\u6b63\u7578\u6cbb\u7642\uff1f
    • Last updated July 10, 2021
    • 0 comments, 97 views, 0 likes

More from vickong pun

  • \u6025\u6c42\uff1a\u5982\u679c\u60f3\u53bb\u6df1\u5733\u7a2e\u7259\uff0c\u53bb\u908a\u5ea6\u597d\uff1f
    1 comment, 0 likes
  • \u7259\u9f52\u6f02\u767d\u5605\u6b65\u9a5f\u6709\u908aD\uff1f\uff08\u4e0b\uff09
    0 comments, 0 likes
  • \u96b1\u5f62\u7259\u5957\u77ef\u6b63\u539f\u7406\u7cfb\u4e5c\u554a\uff1f\u96b1\u5f62\u7259\u5957\u4ecb\u7d39\uff0c\u6084\u6084\u8b8a\u7f8e\u5514\u4fc2\u5922\uff01
    0 comments, 0 likes

More in Politics

  • Norton antivirus account login
    31 comments, 144,912 views
  • Liquidity Locking Made Easy
    10 comments, 83,138 views
  • Ang jili178 login ay nagdudulot sa iyo ng mga laro ng slot at karanasan sa laro ng soccer
    2 comments, 46,593 views

Related Blogs

  • \u8981\u600e\u6a23\u9810\u9632\u6954\u72c0\u7f3a\u640d\uff1f
    0 comments, 0 likes
  • The Benefits of Stainless Steel Dog Bowls for Your Pet
    0 comments, 0 likes
  • The Best Way To Score Astonishing Grades With Machine Learning Assignment Help?
    0 comments, 0 likes
    $15.00

Archives

Social Share

先天缺牙如何正畸治療?

Posted By vickong pun     July 10, 2021    

Body

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。

Comments

0 comments