雙軸式快速上顎擴張之骨性移動效益

目的：臨床上使用快速上顎擴張療法，在於解決上顎牙弓寬度不足的問題，在進行此種療法的過程中，可同時發現上顎牙齒及骨體亦受此療法的影響，產生前後方向的移動。雙軸式快速上顎擴張器設計的目的，在於進行上顎擴張治療時，能同時促使牙齒及上顎骨往前移動，幫助解決患者上顎後縮的問題。本研究的目的，在於分析使用雙軸式快速上顎擴張器進行上顎擴張治療時之骨性移動效益。方法：此前瞻性的臨床研究，包括二十位上顎發育不全之單側唇裂患者，其中男性有十四位，女性有六位，平均年齡為十二歲，接受快速上顎擴張治療。使用的裝置為雙軸式快速上顎擴張器。骨骼方面的改變，由治療前(T1)，上顎擴張後(T2)，所取得之側方測顱X光片，分別測量而加以評估。結果：上顎擴張期間(T1-T2)，A點平均前移1.70 mm，上顎往前往下移動，下顎則往下往後旋轉。結論：雙軸式快速上顎擴張器的臨床治療結果，上顎骨體明顯的往前移動，可減輕上顎發育不全的程度。因此，在治療上顎發育不全之單側唇裂患者方面，此療法符合治療上的需求。

關鍵字

快速上顎擴張；雙軸式快速上顎擴張器；單側唇裂

並列摘要

Objective: This study was designed to measure the dentofacial changes after using double-hinged rapid maxillary expander, which was designed to force the forward movement of teeth and maxilla. Methods: Twenty consecutive subjects with unilateral cleft lip and palate (male: 14, female: 6) were included in this prospective study. Their average age was 12 year-old. All of the subjects were under gone rapid maxillary expansion using double-hinged rapid maxillary expander in a seven-day treatment duration. Pretreatment (T1), post maxilla expansion (T2) lateral cephalograms were taken in order to measure the skeletal changes of all the subjects. Results: In terms of dental changes, the results indicated that, during the expansion phase (T1-T2), the front teeth were pushed forward. In terms of skeletal changes, a 1.70 mm forward movement of A point was observed at T1-T2 phase. The maxilla moved forward and downward. The mandible rotated backward. Conclusion: The application of double-hinged rapid maxillary expander was an effective treatment course for the patients with unilateral cleft lip and palate. This course not only effectively created an anterior movement of maxilla but also pushed the front teeth forward.

並列關鍵字

rapid maxillary expansion ； double-hinged rapid maxillary expander ； unilateral cleft lip and palate patient

國際替代計量

雙軸式快速上顎擴張之骨性移動效益

全文下載

主題瀏覽