ObjectivesTo evaluate the influence of multiplanar reconstruction thickness on the detection of peri‐implant bone defects with a standalone zirconia implant and compare it to when another implant is in the vicinity using cone‐beam computed tomography (CBCT).Materials and MethodsFive dry human mandibles were used to create twenty implant sites in the second premolar and first molar regions. The OP300 Maxio was used to acquire CBCT images (90 kVp, 6.3 mA, 5 × 5 cm FOV, and 0.125 mm3 voxel size) before and after creating 3 mm peri‐implant bone defects in the buccal aspect of the premolar region. Half of the scans featured a single zirconia implant in the premolar region, while the others had two implants in the premolar and molar regions. Three reconstruction thicknesses (0.125 mm, 1 mm, and 2 mm) were considered for the multiplanar reconstruction analyses. Five oral and maxillofacial radiologists assessed the detection of peri‐implant bone defects using a 5‐point scale. Diagnostic parameters were calculated and compared using Two‐way ANOVA (α = .05).ResultsThe studied factors showed no significant influence on the diagnosis of peri‐implant bone defects (p > .05). Diagnostic performance was notably higher with a single implant, especially with a 2‐mm reconstruction thickness (AUC = 0.88, sensitivity = 0.68, specificity = 0.94). Although the differences were not statistically significant, the results were more modest when two implants were present (AUC = 0.80, sensitivity = 0.58, specificity = 0.82).ConclusionsThe presence of an adjacent zirconia implant and variations in reconstruction thickness did not influence the detection of 3 mm buccal peri‐implant bone defects on CBCT images.

中文翻译：

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氧化锆植入物的数量和 CBCT 图像重建的厚度是否影响种植体周围骨缺损的检测？体外诊断准确性研究


目的评估多平面重建厚度对独立氧化锆种植体周围骨缺损检测的影响，并将其与使用锥形束计算机断层扫描 （CBCT） 在附近另一个种植体时进行比较。材料和方法使用 5 个干燥的人类下颌骨在第二前磨牙和第一磨牙区域创建 20 个种植体部位。OP300 Maxio 用于在前磨牙区域的颊侧创建 3 mm 种植体周围骨缺损之前和之后获取 CBCT 图像 （90 kVp、6.3 mA、5 × 5 cm FOV 和 0.125 mm3 体素大小）。一半的扫描在前磨牙区域有一个氧化锆植入物，而其他扫描在前磨牙和磨牙区域有两个种植体。在多平面重建分析中考虑了三种重建厚度 （0.125 mm、1 mm 和 2 mm）。5 名口腔颌面放射科医生使用 5 分制评估了种植体周围骨缺损的检测。使用双向方差分析 （α = .05） 计算和比较诊断参数。结果研究因素显示对种植体周围骨缺损的诊断无显著影响 （p > .05）。单个种植体的诊断性能明显更高，尤其是 2 mm 重建厚度时 （AUC = 0.88，敏感性 = 0.68，特异性 = 0.94）。虽然差异没有统计学意义，但当存在两个植入物时，结果更适中 （AUC = 0.80，敏感性 = 0.58，特异性 = 0.82）。结论相邻氧化锆植入物的存在和重建厚度的变化不会影响 CBCT 图像上 3 mm 颊侧种植体周围骨缺损的检测。