Graduate student, Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil.
Predoctoral student, Department of Clinical Dentistry, Federal University of Espírito Santo (UFES), Vitória, Espírito Santo, Brazil.
J Prosthet Dent. 2024 Jun;131(6):1136-1143. doi: 10.1016/j.prosdent.2022.03.032. Epub 2022 May 12.
Misfits at the implant-prosthesis interface may increase complications in dental implants and affect peri-implant tissue health. Periapical radiographs are the most used imaging examinations for detecting misfits at the implant-prosthesis interface, although digital systems have largely replaced film-based radiographs. Whether postprocessing tools such as enhancement filters assist diagnosis by highlighting misfits is unclear.
The purpose of this in vitro study was to assess the influence of enhancement filter application in the diagnostic accuracy of misfit detection at the implant-prosthesis interface.
A total of 32 dental implants were placed in dry human mandibles. A polyester strip was inserted at the implant-prosthesis interface to simulate a 50-μm misfit; prosthetic crowns installed directly on the implant platforms were used as controls. Standard paralleling periapical images were acquired by using a semidirect system (photostimulable phosphor plate) with the application of Highlight, Invert, and Colorization filters, as well as a direct system (metal oxide complementary semiconductor sensor) with filters Sharpness 3, Invert, and Pseudocolorization. Oral radiologists evaluated the images with and without the application of filters. The areas under the receiver operating characteristics curves (Az values), sensitivity, specificity, accuracy, positive predictive value, and negative predictive values were calculated. The Az values were compared with the receiver operating characteristic (ROC) curves comparison test of the Epidat 3.1 software (α=.05).
Although images without filter application presented descriptively higher diagnostic values than those with filter application, the Az values for images with and without filter application in both semidirect and direct systems showed no significant differences (P>.05).
Enhancement filter application did not significantly influence the diagnostic accuracy of misfit detection at the implant-prosthesis interface.
种植体-修复体界面的不匹配可能会增加种植牙并发症，并影响种植体周围组织的健康。根尖片是检测种植体-修复体界面不匹配最常用的影像学检查方法，尽管数字系统已在很大程度上取代了胶片放射照相。但是，增强滤波器等后处理工具是否有助于通过突出不匹配来辅助诊断尚不清楚。
本体外研究的目的是评估增强滤波器的应用对检测种植体-修复体界面不匹配的诊断准确性的影响。
将 32 个牙种植体放置在干燥的人下颌骨中。在种植体-修复体界面插入聚酯带以模拟 50μm 的不匹配；直接安装在种植体平台上的修复体冠作为对照。使用半直接系统（光激励磷光板）获取标准平行根尖片，并应用 Highlight、Invert 和 Colorization 滤波器，以及直接系统（金属氧化物互补半导体传感器）应用滤波器 Sharpeness 3、Invert 和 Pseudocolorization。口腔放射科医生在应用和不应用滤波器的情况下评估图像。计算接收器操作特性曲线（Az 值）下的面积、敏感性、特异性、准确性、阳性预测值和阴性预测值。使用 Epidat 3.1 软件（α=.05）比较 Az 值和接收器操作特性（ROC）曲线比较检验。
尽管没有滤波器应用的图像在描述性上表现出更高的诊断价值，但在半直接和直接系统中，应用和不应用滤波器的图像的 Az 值没有显着差异（P>.05）。
增强滤波器的应用并未显着影响种植体-修复体界面不匹配的诊断准确性。
