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中华口腔医学研究杂志(电子版) ›› 2014, Vol. 8 ›› Issue (03) : 249 -251. doi: 10.3877/cma.j.issn.1674-1366.2014.03.014

病例报告

下颌第二前磨牙牛牙症伴C 型根管的显微治疗一例
张文1,(), 张婧1   
  1. 1.510055 广州,中山大学光华口腔医学院·附属口腔医院,广东省口腔医学重点实验室
  • 收稿日期:2014-03-30 出版日期:2014-06-01
  • 通信作者: 张文
  • 基金资助:
    中山大学实验教学研究基金(YJ201311)

Microscopic root canal treatment of mandibular second premolar with taurodontism and Cshaped root canal

Wen Zhang1,(), Jing Zhang1   

  1. 1.Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
  • Received:2014-03-30 Published:2014-06-01
  • Corresponding author: Wen Zhang
引用本文:

张文, 张婧. 下颌第二前磨牙牛牙症伴C 型根管的显微治疗一例[J/OL]. 中华口腔医学研究杂志(电子版), 2014, 8(03): 249-251.

Wen Zhang, Jing Zhang. Microscopic root canal treatment of mandibular second premolar with taurodontism and Cshaped root canal[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2014, 8(03): 249-251.

牛牙症、C 型根管在下颌第二前磨牙的发生率均极低。 本文报道1 例罕见下颌第二前磨牙牛牙症伴C 型根管病例,展示锥形束CT 影像学分析和显微根管技术在该病例诊治中的联合应用,为该特殊类型根管的临床治疗提供新思路。

The incidence rate of taurodontism or C-shaped root canal in mandibular second premolar is extremely low. In this article, we reported a case of mandibular second premolar with taurodontism and C-shaped root canal. The combined use of cone beam computed tomography analysis and microscopic root canal technique provides a novel insight for clinicians in treating teeth with trarodontism or C-shaped root canal in daily practice.

图1 右下第二前磨牙根管治疗X 线片 注:图1A 为初始X 线片显示右下第二前磨牙根分叉位置低,近中及远中均有根管影像,提示根管解剖形态复杂;图1B 为开髓后建立直线通路,但无法确定C 型根管具体解剖形态,ZOE 暂封根管口后,行CT 检查;图1C 为使用8# C 锉完成根管探查,到达工作长度;图1D 为根管预备至ProTaper F2,使用牙胶试尖,颊侧根管(B 根管)牙胶距离工作长度仍欠1 ~2 mm;图1E 为重新预备B 根管,以AH Plus 根管糊剂+大锥度牙胶+SybronEndo 热牙胶机,垂直加压连续波法进行根充
图2 右下第二前磨牙CBCT 分析 注:图2A 为CT 片显示右下第二前磨牙根分叉位置低,近中及远中均有根管影像,提示根管解剖形态复杂;图2B 为开髓后,冠部牙本质壁厚度约2 mm;图2C 为根管中上段横截面形态为C 形;图2D 为根管中下段分为3 个根管;图2E 为根管下段根管的周长较中下段有所减小;图2F 为根管根尖部的根管影像不明显;c:周长
图3 右下第二前磨牙根管治疗过程照片 注:图3A 为放置橡皮障后的口外片;图3B 为开髓后显微镜视野图( ×3.8);图3C 为根管充填后显微镜视野图( ×3.8)
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