Doctor of Dental Surgery, Department of Clinical Dentistry, Federal University of Espírito Santo (UFES), Vitória, Espírito Santo, Brazil.
Graduate student, Dental Sciences Graduate Program, Federal University of Espírito Santo (UFES), Vitória, Espírito Santo, Brazil.
J Prosthet Dent. 2022 Jan;127(1):107.e1-107.e7. doi: 10.1016/j.prosdent.2021.10.016. Epub 2021 Nov 26.
Misfits at the implant-prosthesis interface may compromise implant-supported prostheses. Periapical radiographs are frequently used to detect misfit and can be obtained by using digital or film-based systems; however, which radiographic acquisition method and visualization software program provides the greatest accuracy is unclear.
The purpose of this ex vivo study was to evaluate the influence of 3 radiographic acquisition methods (complementary metal oxide semiconductor [CMOS] sensor, phosphor plates, and radiographic films) and 2 visualization software programs (proprietary and third-party) on the detection of misfits at the implant-prosthesis interface.
Thirty-two dental implants were placed in dry human mandibles. Misfits were simulated by inserting a 50-μm polyester strip at the implant-prosthesis interface; prosthetic crowns installed directly over the implant platforms were considered as controls. Standard parallel periapical radiographs were obtained by using a CMOS sensor, a phosphor plate, and radiographic films. Five dentists assessed the digital radiographs for the presence or absence of misfits at the implant-prosthesis interface by using the proprietary software program and a third-party software program; film-based radiographs were evaluated on a light box. The area under the receiver operating characteristic curves (Az values) were compared (α=.05); sensitivity, specificity, accuracy, positive predictive value, and negative predictive values were also estimated.
All diagnostic and Az values were higher for the phosphor plate than for the CMOS sensor and the film-based methods (P<.05), regardless of the viewing software program used (proprietary or third-party) (P>.05).
The use of phosphor plates positively influenced the diagnostic accuracy for the detection of misfits at the implant-prosthesis interface, irrespective of the viewing software program used.
种植体-修复体界面的不匹配可能会影响种植体支持的修复体。根尖片常用于检测不匹配，可通过数字或基于胶片的系统获得；然而，哪种射线照相采集方法和可视化软件程序提供最大的准确性尚不清楚。
本体外研究的目的是评估 3 种射线照相采集方法（互补金属氧化物半导体 [CMOS] 传感器、磷光板和射线照相胶片）和 2 种可视化软件程序（专有和第三方）对种植体-修复体界面不匹配检测的影响。
将 32 颗牙种植体植入干燥的人类下颌骨中。通过在种植体-修复体界面插入 50μm 的聚酯条来模拟不匹配；将直接安装在种植体平台上的修复体冠视为对照。使用 CMOS 传感器、磷光板和射线照相胶片获得标准平行根尖片。5 位牙医使用专有软件程序和第三方软件程序评估数字射线照相是否存在种植体-修复体界面不匹配；胶片射线照相在灯箱上进行评估。比较了受试者工作特征曲线下的面积（Az 值）（α=.05）；还估计了灵敏度、特异性、准确性、阳性预测值和阴性预测值。
无论使用哪种观察软件程序（专有或第三方），磷光板的所有诊断和 Az 值均高于 CMOS 传感器和基于胶片的方法（P<.05）。
使用磷光板可提高检测种植体-修复体界面不匹配的诊断准确性，而与使用的观察软件程序无关。
