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題名 | Management of Inverted Supernumerary Teeth Using CT Scans as a Diagnostic Aid: Review of Literature and Report of a Case=以電腦斷層輔助診斷倒置多生牙及其處置方式--文獻回顧及病例報告 |
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作者姓名(中文) | 陳瓊芬; 施文宇; | 書刊名 | 臺灣兒童牙醫學雜誌 |
卷期 | 8:1 2008.04[民97.04] |
頁次 | 頁25-39 |
分類號 | 416.9 |
關鍵詞 | 多生牙; 電腦斷層; 三度空間影像; Supernumerary tooth; Computed tomographic images; Three-dimensional image reconstruction; |
語文 | 英文(English) |
中文摘要 | 本病例報告目的在討論電腦斷層及三度空間影像於多生牙診斷及治療的效力。八歲又二個月男性病患,於上顎咬合片中發現二顆倒置多生牙,因位置特殊,無法以傳統放射線檢查來確認多生牙與週邊組織相對位置,故以電腦斷層及三度空間影像重組定位,並於全身麻醉下移除多生牙。傳統放射線檢查可用於確認上顎區是否有多生牙。電腦斷層及三度空間影像則進一步顯示多生牙與鄰近組織間正確相對位置。此一病患左側多生牙位於腭側且延緩左側正中門齒萌發,右側多生牙近鼻腔且造成右側正中門齒位移。電腦斷層及三度空間影像在多生牙診斷及治療計畫是一個正確及有效的方法。在眾多的影像中以冠狀切及矢狀切最為實用,從中可得知多生牙與周邊組織正確的相對位置。擁有這些訊息後不但可以減少手術時間更可降低併發症的發生。 |
英文摘要 | The purposes of this article are to explore the validity of computed tomographic (CT) images for defining the three-dimensional (3-D) position of impacted supernumerary teeth and to report the case of an 8-year, 2-month-old patient with two inverted maxillary anterior supernumerary teeth. The spatial location of the supernumerary teeth in this child was difficult to appreciate using traditional occlusal and panoramic radiographs, so a CT scan with 3-D image reconstruction was used to demonstrate the relationship between supernumerary teeth and permanent teeth. Two supernumerary teeth were removed while the patient was under general anesthesia. The CT findings were clinically confirmed at the time of surgery. While the traditional radiographs identified the supernumerary teeth in the anterior portion of the maxilla, the CT and reconstructed 3-D images revealed details of the spatial relationship of the supernumerary teeth. The left supernumerary tooth was located palatally and delayed eruption of tooth 21. The right supernumerary tooth was located near the nasal floor and caused displacement of tooth 11. The CT scan with 3-D image reconstruction was found to be an accurate and effective method in the examination and treatment planning of supernumerary teeth. The most useful images were coronal and sagittal images. Clinicians can obtain correct orientation of un-erupted teeth in three dimensions. Safe and efficient access can be planned pre-operatively, which can facilitate surgical procedures and minimize complications. |
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