@article{cd28b670ec1511dfb6d2000ea68e967b,
title = "Accuracy of radiographic diagnosis of peri-implant radiolucencies--an in vitro experiment",
abstract = "The absence of a peri-implant radiolucency on radiographs is used as a criterion for implant success. The purpose of the present study was to evaluate the accuracy of diagnosing peri-implant radiolucencies using an experimental model. Astra Tech fixtures were inserted into 20 bony specimens. Later, the fixtures were removed and the prepared cavities were enlarged in 2 steps. The specimens were radiographed under strictly standardized circumstances in the 3 stages ({"}press-fit{"} = simulated osseointegration, and {"}0.1 mm space{"} and {"}0.175 mm space{"} = simulated connective tissue layer). All specimens were radiographed with 2 vertical angulations (0 degree and 15 degrees). Ten observers read the radiographs and evaluated bone-implant relationship on a 5-point scale. The interobserver agreement was low. Specificity was remarkably low, and sensitivity was moderate. A significant difference in diagnostic accuracy was found for 0.175 mm peri-implant-space compared to 0.1 mm space. The diagnostic accuracy was found to be highest for 0.175 mm peri-implant space specimens. It is concluded, that radiography seems to be an unreliable method for diagnosing peri-implant spaces, although accuracy improved at increasing space widths. Strict orthogonal projection angles did not improve diagnostic accuracy.",
author = "Sewerin, {I P} and K Gotfredsen and K Stoltze",
note = "Keywords: Alveolar Bone Loss; Dental Implantation, Endosseous; Dental Implants; Humans; Observer Variation; Osseointegration; ROC Curve; Radiography, Dental; Reproducibility of Results; Sensitivity and Specificity",
year = "1997",
language = "English",
volume = "8",
pages = "299--304",
journal = "Clinical Oral Implants Research",
issn = "0905-7161",
publisher = "Wiley-Blackwell",
number = "4",
}