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拔牙會導致牙縫嗎?

Posted By vickong pun     July 8, 2021    

Body

  拔牙會導致牙縫嗎?

  拔牙會導致牙縫嗎?正畸拔牙的目的是為了獲得間隙,而間隙在矯治的過程中是要被利用的。

但事實上每位患者所需要的間隙是不同的,而拔牙往往又必須對稱拔牙,一般不能僅在一側拔牙,更不可能只拔半個牙齒,所以有可能出現矯治需要的間隙與拔牙所提供的間隙不完全相等的情況。
通常遇到的情況是拔牙間隙可能大於所需間隙,但正畸醫師最終總能把拔牙間隙完全關閉而不留牙縫,這是什麼道理呢?原來在矯治過程中,一些錯位牙齒移動到正常位置,而前突的牙齒被內收回來,這都是矯治力作用的結果。
在這一過程中,後牙往往因承受反作用力而向前移動,有時這種移動也是矯治計畫的一部分。

這樣,拔牙間隙在前後牙的相對移動過程中逐漸縮小,以至完全關閉而不留牙縫。
有些患者擔心拔牙矯治後可能遺留很大的間隙,而必須以鑲牙的方法消除顧慮是不必要的。

     ★ 护牙知多滴      

《拔牙后第六天還是很疼怎麼回事?》

  

《新牙長出來了,為什麼乳牙還不掉?》

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