Imaging evaluating of the implant/bone interface - an in vitro radiographic study.

Imaging evaluating of the implant/bone interface - an in vitro radiographic study.

Dentomaxillofac Radiol. 2017 Feb 17;:20160296

Authors: Vidor MM, Liedke GS, Vizzotto MB, da Silveira H, da Silveira PF, Araujo CW, da Silveira H

Abstract
OBJECTIVES: To analyze the diagnostic accuracy of conventional and digital radiographic images and the impact of digital filters in evaluating the bone/implant interface.
METHODS: Titanium implants were inserted into 74 fresh bovine ribs blocks, 37 fitting tight to the bone walls (simulating the existence of osseointegration), and 37 with a gap of 0.125 mm (simulating a failure in the osseointegration process). Periapical radiographs were taken with conventional film and two phosphor-plate systems (Vista Scan and Express). Digital radiographs were investigated with and without enhancement filters. Three blinded examiners assessed the images for the presence of juxtaposition in the bone/implant interface using a five-point Likert scale. Sensitivity, specificity, and the area under the ROC curve (AUC) and its 95% confidence interval (CI) were calculated for each variable. Intra- and inter-examiner agreements were analyzed using Kendall´s concordance test.
RESULTS: Intra- and inter-examiner agreements were higher than 0.80 for both digital and conventional images. Conventional radiographs (AUC = 0.963 / CI = 0.891 to 0.993) and digital images with high enhancement filters such as Caries2 (AUC = 0.964 / CI = 0.892 to 0.993), Endo (AUC = 0.952 / CI = 0.875 to 0.988), and Sharpen3 (AUC = 0.894 / CI = 0.801 to 0.954) showed the greatest accuracy for evaluating the bone/implant interface. Original images from both digital systems, and the further enhancement filters tested showed low sensitivity for the diagnosis task tested.
CONCLUSION: Conventional radiographs or digital radiographs with high-enhancement filters should be used for evaluating the bone/implant interface.

PMID: 28211288 [PubMed - as supplied by publisher]

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