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齙牙形成原因有邊D?

Posted By vickong pun     July 7, 2021    

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「齙牙」喺醫學上稱為上頜前突,從外觀上而言就系上頜骨及上頜前牙明顯向前突出,畀人以齜牙咧嘴嘅感覺。齙牙形成原因與遺傳因素有關,具有家族性傾向。  口腔唔良習慣同埋替牙期局部障礙系形成「齙牙」嘅直接原因。兒童喺替牙期出現吮拇指、咬下唇、舔上前牙等唔良習慣,均可對上齶施加一個向上嘅壓力,從而妨礙了鼻腔向下嘅發展,使得齶蓋高拱,牙弓狹窄、牙齒排列唔擠、齙突。與此同時呢些口腔唔良習慣也對上頜前牙施加了一向外上嘅推力,導致了上頜前突。  替牙期如果出現下前牙先天缺失或下頷乳磨牙因各種原因造成嘅早失,均可導致下頜牙弓前段變小,上頜就可明顯變長、外突;替牙期上頜多生齒以及恆磨牙萌出順序嘅異常,也可導致上頷牙弓變大,從而形成上頜前突嘅「齙牙」面孔替牙期嘅局部障礙。
齙牙形成原因  溫馨提示:齙牙矯正治療系一項非常復雜嘅系統工程,佢唔單純系排列唔齊嘅牙齒,而系要矯正由於牙頜面唔調而致嘅畸形,更重要嘅系通過治療嚟恢復口頜系統嘅正常功能,對矯正醫生嘅技術要求也非常高,所以牙齒矯正一定要選擇正規嘅口腔機構。

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