ArticleInternational journal of implant dentistry2026
Accuracy of CBCT and dental-MRI for detecting peri-implant bone defects at single titanium implants: an in-vitro pilot study.
Article in International journal of implant dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeTo evaluate the reliability and accuracy of optimized dental-MRI (dMRI) for detecting and classifying peri-implant bone defects around single titanium implants.
methods48 titanium implants were inserted into bovine ribs. 24 implants had surrounding standardized defects (1-wall, 2-wall, 3-wall, 4-wall) in two sizes (1 mm and 3 mm), while the other 24 implants showed no peri-implant bone defects. CBCT and dMRI were performed and analyzed twice by two readers. 3 Tesla MRI was conducted using an innovative intraoral coil and a novel, T1-weighted sequence for metal artifact reduction (CS-SEMAC). Cohen's Kappa (κ), sensitivity, and specificity were assessed for bone defect detection, size, and type. Modality differences were evaluated using the exact McNemar test and Firth penalized-likelihood logistic regression.
resultsFor bone defect detection, almost perfect intra-/inter-rater reliability (κ-value range: 0.958-1) was found for both imaging modalities, with high sensitivity/specificity (CBCT 100%/100%, 95% CI 0.962-1.000/0.962-1.000; MRI 98%/100%, 95% CI 0.927-0.998/0.962-1.000), confirmed by Firth regression (p = 0.22). For defect type classification, both CBCT (κ-value range: 0.884-0.913) and MRI (κ-value range: 0.794-0.942) demonstrated almost perfect intra-/inter-rater reliability. Overall sensitivity/ specificity were 86%/99% (95% CI 0.780-0.926 and 0.985-0.995) for CBCT and 84%/99% (95% CI 0.755-0.910 and 0.985-0.995) for dMRI, with no significant difference between modalities (Firth-adjusted OR 0.85, 95% CI 0.38-1.88, p = 0.68).
conclusionsUnder optimized ex vivo conditions, dMRI offers a promising reliability and accuracy for identifying and classifying peri-implant bone defects around single titanium implants. High-resolution dMRI facilitates radiation-free, three-dimensional peri-implant tissue visualization.
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