齒源性角化囊腫伴隨位移至下顎骨邊緣之阻生齒－病例報告

齒源性角化囊腫是常見的顎骨囊腫，有局部侵襲性和高復發率的特點。因為好發於下顎後臼齒區域，所以常伴隨阻生齒。隨著腫瘤的變大，這些阻生齒可能被推擠到顎骨的各個地方，造成治療的困難。我們的病例報告即是一個侵犯左側下顎骨後臼齒區域的齒源性角化囊腫，伴隨位移至下顎骨邊緣的第三大臼齒，且牙根型態複雜。以囊腫摘除與周圍骨切除，並同時拔除移位的阻生齒後，經過半年的追蹤，骨缺損有明顯改善。本文並就齒源性角化囊腫和位移的阻生齒提出處置方式與討論。

關鍵字

齒源性角化囊腫；異位第三大臼齒

並列摘要

Odontogenic keratocysts are common cysts of jaws that are locally aggressive and have a high recurrence rate. They are often associated with impacted teeth because they commonly occur in the posterior molar region of the lower jaws. As the tumor grows larger, these impacted teeth may be pushed into various areas of the jaw, making treatment difficult. Our case report is an odontogenic keratocyst involving the posterior molar region of the left mandible with a third molar displaced to the border of the mandible with a complex root pattern. The cyst was enucleated and peripheral osteotomy was performed with simultaneous extraction of the ectopic third molar. The follow-up after 6 months showed no sign of recurrence with good radiologic ossification. The management of the odontogenic keratocyst and the ectopic impaction was also discussed.

並列關鍵字

Odontogenic keratocyst ； Ectopic third molar

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