混合齒列期上顎門齒及犬齒異位萌發，矯正病例報告

Ectopic Eruption of Maxillary Incisor and Canine in the Mixed Dentition: An Orthodontic Case Report

黃姵文(Pei-Wen Huang) ； 錢世康(Shih-Kang Chien) ； 莊才逸(Tsai-Yi Chuang)

《臺灣兒童牙醫學雜誌》 22卷2期 (2022/09) Pp. 162-167

https://doi.org/10.6319/TJPD.202209_22(2).0009

摘要

當恆齒沒有在統計學上的年紀範圍萌出時，有很多原因：空間不足、創傷歷史、局部病灶或遺傳因素等都有可能，身為兒童牙科醫師若能及早注意到問題，或許可以幫助患者在適當時機介入。一名10歲4個月男童至恩主公醫院牙科部求診，主訴為上顎前牙區疼痛，經X光檢查發現有水平骨阻生贅生齒並造成右上正中恆門齒延遲萌發，另發現發育中的左上恆犬齒位置異常。手術移除右上贅生齒後在正中恆門齒黏著矯正器，再利用活動矯正裝置牽引將右上正中恆門齒復位。持續追蹤至左上恆犬齒於牙根發育至1/2長度時，開始上顎半口固定矯正，進行犬齒閉合牽引下移復位。

關鍵字

多生牙 ； 門齒阻生 ； 犬齒阻生 ； 牙齒延遲萌發 ； 手術露出

並列摘要

A number of factors influence the eruption timing of permanent teeth, including insufficient arch length, localized diseases, and systemic conditions and so forth. Consideration should also be given to further promoting eruption through surgical exposure of the incisor and canine, with or without subsequent orthodontic traction. Treatment planning should be complemented by careful clinical assessment and the use of appropriate investigations. This report presents a case of the 10-year-old boy suffered from maxillary right central incisor and left canine impaction. He had received the orthodontic treatment followed by surgical exposure of the two impacted teeth. A pleasant result was achieved after space closure with improvement in oral function and appearance.

並列關鍵字

Supernumerary Teeth ； Incisor Impaction ； Canine Impaction ； DTE (delayed tooth eruption) ； Surgical Exposure