Int J Prosthodont. 2019 Mar/Apr;32(2):198-200. doi: 10.11607/ijp.6127.
To assess the accuracy of three cone beam computed tomography (CBCT) systems in misfit detection at the implant-abutment joint.
A total of 32 implants were placed in dry human mandibles. Porcelain-fused-to-metal crowns, both with and without a 200-μm-thick gap at the implant-abutment joint, were placed and then scanned using three CBCT systems: Picasso Trio (PT), OP300 (OP), and Scanora 3D (SC). Images were assessed, and area under the receiver operating characteristic curve (Az) values were compared (a = .05).
Az values obtained with PT (0.86) were significantly higher than with OP (0.63) and SC (0.64) (P < .05).
Images acquired with PT allowed for more accurate misfit detection at the implant-abutment joint due to higher contrast resolution.
评估三种锥形束计算机断层扫描（CBCT）系统在种植体-基台界面拟合不良检测中的准确性。
将 32 个种植体植入干燥的人下颌骨中。在种植体-基台界面处分别放置了带有和不带有 200μm 厚间隙的烤瓷熔附金属冠，然后使用三种 CBCT 系统（Picasso Trio [PT]、OP300 [OP]和 Scanora 3D [SC]）进行扫描。对图像进行评估，并比较了接收器工作特征曲线下的面积（Az）值（a =.05）。
PT 获得的 Az 值（0.86）明显高于 OP（0.63）和 SC（0.64）（P <.05）。
由于具有更高的对比度分辨率，PT 采集的图像可更准确地检测种植体-基台界面的拟合不良。
