从对边牙预测MB2通道形态:基于CBCT的双边对称分析
Ronald Wigler1, Shir Rachmiel2, Zvi Metzger1
1Department of Endodontology, The Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.
概括
圆束计算断层扫描 (CBCT) 可靠地预测了双侧大牙中的第二个 mesio-buccal 通道 (MB2). 在CBCT扫描中这种双边对称性有助于对复杂的根运河解剖进行内牙治疗规划.
科学领域:
- 牙周内科医院 牙周内科医院 牙周内科医院
- 牙科成像 牙科成像 牙科成像
- 人体解剖学 解剖学 解剖学
背景情况:
- 大牙经常呈现复杂的根管解剖学,特别是第二个口腔道 (MB2),导致内牙治疗失败.
- 圆束计算断层扫描 (CBCT) 越来越多地用于牙科诊断,提供牙结构的详细3D可视化.
- 在CBCT扫描中使用双边对称性来预测MB2的存在和配置的潜力仍未得到充分探索.
研究的目的:
- 根据双边对称性,评估CBCT在预测尾牙中第二个口道 (MB2) 的存在和配置方面的有效性.
- 使用CBCT数据,比较同源,相邻和相反侧面大的MB2解剖学的可预测性.
主要方法:
- 分析了99个双边第一个和第二个尾牙的CBCT扫描.
- 对于每个牙来说,MB2通道的患病率被确定.
- 维图奇分类被用来描述道配置,并通过同类,相邻和相反的牙进行比较.
主要成果:
- 在96.5%的第一牙和81.3%的第二牙中发现了MB2通道.
- 在同源的第一个牙 (91.9%) 和同源的第二个牙 (78.8%) 之间观察到强烈的相关性.
- 邻近或相反的牙之间的一致性明显较低,约为60% (p < 0.05).
结论:
- CBCT成像显示在预测双边大牙中MB2通道的存在和配置方面具有很高的可靠性.
- 对于MB2解剖学的CBCT的预测值在比较同类 (两侧) 牙时是最强的.
- 这种双边对称性相关性不能可靠地扩展到相邻或相反的尾牙,限制了其在这些比较中的预测性使用.
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