Degen Katharina, Habor Daniel, Radermacher Klaus, Heger Stefan, Kern Jaana-Sophia, Wolfart Stefan, Marotti Juliana
Department of Prosthodontics and Biomaterials, Medical Faculty, RWTH Aachen University, Aachen, Germany.
Chair of Medical Engineering at the Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany.
Clin Oral Implants Res. 2017 May;28(5):520-528. doi: 10.1111/clr.12829. Epub 2016 Mar 27.
The aim of the study was to analyze the accuracy of measuring the cortical bone thickness using a combination of low- and high-frequency ultrasound (US) compared with cone-beam computed tomography (CBCT) and using stereomicroscopy as reference method.
Ten jawbone models were prepared using bovine ribs and porcine gingiva. A dental implant was placed in each model. All models were investigated by US, CBCT, and stereomicroscopy. The cortical bone thickness was measured directly above and 4 mm beside the implant with each method in different slices.
The median deviation of US measurements compared to the reference method was 0.23 mm. The CBCT method was slightly more accurate (median percent deviation of 9.2%) than the US method (10.3%). However, US measurements directly above the implant were more accurate than CBCT measurements with a median percent deviation of 10.5% for US vs. 11.8% for CBCT.
Ultrasound showed a high potential to supplement CBCT for measurements of the cortical bone thickness.
本研究旨在分析与锥形束计算机断层扫描（CBCT）相比，使用低频和高频超声（US）组合测量皮质骨厚度的准确性，并以体视显微镜作为参考方法。
使用牛肋骨和猪牙龈制备10个颌骨模型。在每个模型中植入一枚牙种植体。所有模型均通过超声、CBCT和体视显微镜进行研究。在不同层面上，用每种方法在种植体正上方及旁边4毫米处直接测量皮质骨厚度。
与参考方法相比，超声测量的中位偏差为0.23毫米。CBCT方法（中位百分比偏差为9.2%）比超声方法（10.3%）略准确。然而，在种植体正上方的超声测量比CBCT测量更准确，超声的中位百分比偏差为10.5%，而CBCT为11.8%。
超声在补充CBCT测量皮质骨厚度方面具有很大潜力。
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