頁籤選單縮合
題名 | 乳牙牛狀齒(Taurodontism)--病例報告=Taurodontism of Deciduous Dentition--Case Report |
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作者 | 趙淑芬; 劉正芬; | 書刊名 | 臺灣兒童牙醫學雜誌 |
卷期 | 11:1 2011.04[民100.04] |
頁次 | 頁35-39 |
分類號 | 417.692 |
關鍵詞 | 牛狀齒; 乳牙; 根管治療; Taurodontism; Deciduous dentition; Root canal therapy; |
語文 | 中文(Chinese) |
中文摘要 | Witkop定義牛狀齒(taurodontism)比正常牙齒有較大的牙髓腔,齒頸部收縮不明顯,從牙根分叉處到牙骨質-牙釉質交界cementoenamel junction(CEJ)距離大於咬合面到齒頸部距離。牛狀齒在恆齒與乳齒發生率都很低,一般來說恆齒比乳齒常見。牛狀齒特殊複雜的根管型態,大大地影響根管的成功率,所以根管治療就變成一種挑戰。本病例是一位6歲的小男生,由其他診所轉來,家長主訴多次治療都無法改善右下第二大臼齒頰側黏膜發炎現象。X光片上呈現上下兩側臼齒都為牛狀齒。經過治療後的3個月回診,在臨床和X光片上都有良好的預後。牛狀齒有更多的根管數及深長的牙髓腔,特殊複雜的根管型態,增加治療的困難度。牙醫師應該認識牛狀齒,在治療計畫和方式上要謹慎考量。 |
英文摘要 | Witkop defined taurodontism thus: ”Taurodont teeth have pulp chambers in which the bifurcation or trifurcation is displaced apically, so that the chamber has a greater apico-occlusal height than in cynodont teeth and lacks a constriction at the level of the cementoenamel junction. The distance from the bifurcation or trifurcation of the roots to the cementoenamel junction is greater than the occlusal-cervical distance.” Taurodontism has a very low incidence in deciduous dentition and permanent tooth. It stands a challenge when it requires pulp therapy. This case report presents a case of taurodontism in deciduous molars of a 6 year old male child which refer from local clinical complaint about abscess over his lower buccal mucosal of #85 tooth. Pariapical radiograph presented of taurodontism of deciduous molars on both side.A three month recall showed a favourable prognosis both clinical and radiographically. Normaly, Each taurodont tooth may have extraordinary root canals in terms of shape and number. Careful exploration of the grooves between all orifices, especially with magnification, has been recommended to reveal additional orifices and canals. It is difficulty of locating, instrumentation and obturating of the pulp canals, as the canal were very short Therefore dentists should be aware of taurodontism in children. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。