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首页> 外文期刊>Journal of clinical periodontology >Defect morphology, bone thickness, exposure settings and examiner experience affect the diagnostic accuracy of standardized digital periapical radiographic images but not of cone beam computed tomography in the detection of peri‐implant osseous defects: An in vitro study
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Defect morphology, bone thickness, exposure settings and examiner experience affect the diagnostic accuracy of standardized digital periapical radiographic images but not of cone beam computed tomography in the detection of peri‐implant osseous defects: An in vitro study

机译：缺陷形态，骨骼厚度，曝光设置和考官经验影响标准化数字恐慌放射线图像的诊断准确性，但不具有锥形光束计算机断层扫描在检测围植入骨缺陷中的诊断精度：体外研究

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Abstract Aims To investigate the effect of defect morphology, bone thickness and examiner experience on the accuracy to detect the presence, the type and the depth of peri‐implant defects with digital periapical radiographs (PAs) and cone beam computed tomography (CBCT) in an in vitro model. Methods Thirty six implants were placed in fresh porcine rib bone with different types of standardized defects while sites with no defect served as control. Fourteen masked examiners evaluated 324 PAs and 108 CBCT images. The presence and type of defect, the location of the bottom of the defect and the location of first bone‐to‐implant contact were recorded. The sensitivity, specificity, accuracy, positive and negative predictive values were calculated for each type of defect using actual measurements as the gold standard. Results The diagnostic accuracy for PAs was affected by defect morphology, exposure time, thickness of bone walls and the level of experience of the examiner. The overall diagnostic accuracy of CBCT was high (96%) for all types of defects. Conclusion Cone beam computed tomography showed better diagnostic accuracy in the detection of peri‐implant defects, this can be attributed to the fact that CBCT seems to be less affected by variables that contribute to the poorer performance of PAs.
机译：摘要旨在探讨缺陷形态，骨厚度和审查员经验对检测存在的准确性的影响，术语射线照片（PAS）和锥梁计算断层扫描（CBCT）的存在，围植入缺陷的准确性体外模型。方法将三十六种植入物置于新鲜猪肋骨中，不同类型的标准化缺陷，而没有缺陷的位点用作控制。十四次蒙面检查员评估了324个PAS和108 CBCT图像。记录了缺陷的存在和类型，记录缺陷的底部的位置和第一骨对植物接触的位置。使用实际测量作为金标准的每种类型的缺陷计算灵敏度，特异性，准确度，正化值，正面预测值。结果PAS的诊断准确性受到缺陷形态，曝光时间，骨墙厚度以及考官的经验水平影响。对于所有类型的缺陷，CBCT的整体诊断准确性高（＆ 96％）。结论锥梁梁计算机断层扫描在检测到PERI植入物缺陷中显示出更好的诊断准确性，这可能归因于CBCT似乎受到对PAS较差性能的变量影响的事实。

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