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Author Spotlight: Establishing an Accurate Microhardness Testing Protocol for Craniofacial Tissues
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在高分辨率CBCT上检测根通道可见性的检测门:微型CT验证研究

Kheya Patel1, Feng-Ming Wang1, Mehrnaz Tahmasbi1

  • 1Department of Endodontics, Texas A&M College of Dentistry, Dallas, Texas.

Journal of endodontics
|November 24, 2025
PubMed
概括

高分辨率的形束计算断层扫描 (CBCT) 可以可靠地检测300微米左右的根通道. 小于200微米的道往往被忽视,影响牙科评估.

科学领域:

  • 牙科 牙科是指牙科的专业.
  • 放射学 放射学是一门学科.
  • 牙周内科医院 牙周内科医院 牙周内科医院

背景情况:

  • 形束计算断层扫描 (CBCT) 对于评估根管解剖学至关重要.
  • 在CBCT中确定可靠的通道检测的精确尺寸值仍然是一个挑战.

研究的目的:

  • 通过使用高分辨率CBCT来确定根管径和可靠检测的概率之间的关系.
  • 在CBCT上建立通道可见性的实际尺寸值,使用微型CT作为参考标准.

主要方法:

  • 通过微型CT和CBCT对61颗人类牙进行了成像.
  • 来自微型CT的通道直径与CBCT截面相关.
  • 三名观察员在CBCT上评估了通道可见性,并使用后勤回归和ROC分析建模了检测概率.

主要成果:

  • 获得了非常好的观察者间协议 (κ=0.78-0.91).
  • 自信检测概率在~265μm时达到70%,在~299μm时达到80%,在~350μm时达到90%.
  • 接收器操作特征分析显示了高分辨准确度 (AUC=0.89).

结论:

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  • 在80μm-voxel CBCT上保持一致的根管可见性在大约300μm时实现.
  • 200-300μm之间的通道通常是可见的,而<200μm的通道通常是错过的.
  • 这些门有助于临床医生预测放射学上无法检测的,但具有专利性的道.