根据下三部的角度和冲击深度评估下三部的解剖关系:基于CBCT的研究
Zahra Vasegh1, Pedram Bakhshaei2, Morteza Jahanbani3
1Oral and Maxillofacial Radiology Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Oral and maxillofacial surgery
|August 24, 2023
概括
这项研究发现,虽然第三角与邻近的牙和闭口平面有很强的相关性,但它与下膜通道或语言板附近的关系在统计学上并不显著. 水平冲击 (位置A) 最接近语言板.
科学领域:
- 牙科 牙科是指牙科的专业.
- 口腔和牙面部外科手术
- 放射学 放射学是一门学科.
背景情况:
- 第3 (M3) 损伤很常见,可能导致并发症.
- 评估M3根与关键解剖结构,如下膜通道 (IAC) 和舌膜板 (LP) 的距离对于手术规划至关重要.
- 圆束计算断层扫描 (CBCT) 为准确的测量提供了详细的3D成像.
研究的目的:
- 用CBCT量化评估M3倾斜度/冲击深度和根距离与IAC和LP之间的关系.
- 为了确定M3角是否与它在毫米尺度上与IAC和LP的距离相关.
主要方法:
- 一项横截面研究分析了219名患者的340个CBCT扫描.
- 测量包括M3角度 (与M2 / occlusal平面相比),以及距离IAC和LP的 mesial / distal 根距离.
- 冬季和佩尔和格雷戈里分类被用于角度和垂直位置,分别.
- 统计分析包括斯皮尔曼相关性,ANOVA,威尔希分析和多变量方差分析.
主要成果:
- 半角倾斜是最常见的 (52.1%),其次是垂直倾斜 (25.9%).
- 发现M3与M2相对的角度和闭合平面 (r=0.983) 之间存在强烈的正相关性.
- 观察到介质根与IAC/LP的近距离与角化之间存在弱负相关性.
- 在冬季分类中,距离根与IAC的距离距离与角度 (P=0.003) 有显著的关系.
- 多变量分析显示,倾斜度/冲击深度和M3根距离与IAC或LP (P=0.211) 之间没有显著的关系.
结论:
- M3角与相邻的牙 (M2) 和闭口平面有很强的相关性.
- 距离根与IAC的距离距离是与M3角相关的唯一显著变量.
- 佩尔和格雷戈里位置A的水平倾斜的M3最接近LP,最远离IAC.
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