锥形束计算机断层扫描在根管形态评估中的诊断价值——基于微 CT 的比较。
Diagnostic value of cone beam computed tomography for root canal morphology assessment - a micro-CT based comparison.
机构信息
Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal.
Grupo de Investigação em Bioquímica e Biologia Oral, Unidade de Investigação em Ciências Orais e Biomédicas (UICOB), Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal.
出版信息
Clin Oral Investig. 2024 Mar 8;28(3):201. doi: 10.1007/s00784-024-05580-y.
OBJECTIVES
The aim of this study was to assess cone beam computed tomography (CBCT) as a root canal anatomy diagnostic tool by comparison with micro-CT gold-standard.
MATERIALS AND METHODS
216 two-rooted mandibular molars were first scanned in a CBCT device (200 μm voxel size) and posteriorly in a micro-CT scanner (19.61 μm). The volumes were sequentially screened to classify main root canal anatomy according to Vertucci classification, and for the presence of lateral canals and apical deltas, in both mesial and distal roots.
RESULTS
Both methods revealed a higher prevalence of Vertucci Type II and IV in the mesial root, and Vertucci Type I in the distal root. The percentage of agreement for main root canal anatomy classification between CBCT and micro-CT scores was high (85.2%).
CONCLUSION
Sensibility to detect both lateral canals and apical deltas with CBCT was low. These results attest to the fact that minor anatomical changes might be difficult to identify with CBCT imaging, hampering its diagnostic value.
目的
本研究旨在通过与微 CT 金标准比较，评估锥形束 CT（CBCT）作为根管解剖诊断工具的性能。
材料与方法
首先将 216 颗下颌双根磨牙在 CBCT 设备（200μm 体素大小）中进行扫描，然后在微 CT 扫描仪（19.61μm）中进行扫描。依次对容积进行筛选，根据 Vertucci 分类对主根管解剖结构进行分类，并确定近中和远中根的侧支根管和根尖三角的存在。
结果
两种方法均显示近中根的 Vertucci Ⅱ型和Ⅳ型以及远中根的 Vertucci Ⅰ型更为常见。CBCT 和微 CT 评分对主根管解剖结构分类的一致性百分比很高（85.2%）。
结论
CBCT 检测侧支根管和根尖三角的敏感性较低。这些结果表明，较小的解剖结构变化可能难以通过 CBCT 成像识别，从而影响其诊断价值。
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