Accuracy of cone-beam computed tomography, dental magnetic resonance imaging, and intraoral radiography for detecting peri-implant bone defects at single zirconia implants-An in vitro study. 2018

Tim Hilgenfeld, and Alexander Juerchott, and Ulrich Karl Deisenhofer, and Johannes Krisam, and Peter Rammelsberg, and Sabine Heiland, and Martin Bendszus, and Franz Sebastian Schwindling
Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.

OBJECTIVE To evaluate the diagnostic value of cone-beam computed tomography (CBCT), intraoral radiography (IR), and dental magnetic resonance imaging (dMRI) for detecting and classifying peri-implant bone defects at zirconia implants. METHODS Forty-eight zirconia implants were inserted in bovine ribs, 24 of which had standardized defects (1-wall, 2-wall, 3-wall, 4-wall) in two sizes (1 and 3 mm). CBCT, IR, and dMRI were performed and analyzed twice by four readers unaware of the nature of the defects. Cohen's and Fleiss' kappa (κ), sensitivity, and specificity were calculated for the presence/absence of bone defects, defect size, and defect type. Cochran's Q-test with post hoc McNemar was used to test for statistical differences. RESULTS A high intra- and inter-reader reliability (κ range: 0.832-1) and sensitivity/specificity (IR: 0.97/0.96; CBCT: 0.99/1; dMRI: 1/0.99) for bone defect detection were observed for all three imaging methods. For defect type classification, intra- (κ range: 0.505-0.778) and inter-reader (κ: 0.411) reliability of IR were lower compared to CBCT (κ range intrareader: 0.667-0.889; κ inter-reader: 0.629) and dMRI (κ range intrareader: 0.61-0.832; κ inter-reader: 0.712). The sensitivity for correct defect type classification was not significantly different for CBCT (0.81) and dMRI (0.83; p = 1), but was significantly lower for IR (0.68; vs. CBCT p = 0.003; vs. dMRI p = 0.004). The sensitivity advantage of CBCT and dMRI for defect classification was smaller for 1-mm defects (CBCT/dMRI/IR: 0.68/0.72/0.63, no significant difference) than for 3-mm defects (CBCT/dMRI/IR: 0.95/0.94/0.74; CBCT vs. IR p = 0.0001; dMRI vs. IR p = 0.003). CONCLUSIONS Within the limitations of an in vitro study, IR can be recommended as the initial imaging method for evaluating peri-implant bone defects at zirconia implants. CBCT provides higher diagnostic accuracy of defect classification at the expense of higher cost and radiation dose. Dental MRI may be a promising imaging method for evaluating peri-implant bone defects at zirconia implants in the future.

UI MeSH Term Description Entries
D008279 Magnetic Resonance Imaging Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques. Chemical Shift Imaging,MR Tomography,MRI Scans,MRI, Functional,Magnetic Resonance Image,Magnetic Resonance Imaging, Functional,Magnetization Transfer Contrast Imaging,NMR Imaging,NMR Tomography,Tomography, NMR,Tomography, Proton Spin,fMRI,Functional Magnetic Resonance Imaging,Imaging, Chemical Shift,Proton Spin Tomography,Spin Echo Imaging,Steady-State Free Precession MRI,Tomography, MR,Zeugmatography,Chemical Shift Imagings,Echo Imaging, Spin,Echo Imagings, Spin,Functional MRI,Functional MRIs,Image, Magnetic Resonance,Imaging, Magnetic Resonance,Imaging, NMR,Imaging, Spin Echo,Imagings, Chemical Shift,Imagings, Spin Echo,MRI Scan,MRIs, Functional,Magnetic Resonance Images,Resonance Image, Magnetic,Scan, MRI,Scans, MRI,Shift Imaging, Chemical,Shift Imagings, Chemical,Spin Echo Imagings,Steady State Free Precession MRI
D011861 Radiography, Dental Radiographic techniques used in dentistry. Dental Radiography
D000539 Alveolar Process The thickest and spongiest part of the maxilla and mandible hollowed out into deep cavities for the teeth. Alveolar Ridge,Alveolar Processes,Process, Alveolar,Processes, Alveolar,Ridge, Alveolar
D012680 Sensitivity and Specificity Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed) Specificity,Sensitivity,Specificity and Sensitivity
D015040 Zirconium A rather rare metallic element with atomic number 40, atomic weight 91.224, and symbol Zr.
D015588 Observer Variation The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material). Bias, Observer,Interobserver Variation,Intraobserver Variation,Observer Bias,Inter-Observer Variability,Inter-Observer Variation,Interobserver Variability,Intra-Observer Variability,Intra-Observer Variation,Intraobserver Variability,Inter Observer Variability,Inter Observer Variation,Inter-Observer Variabilities,Inter-Observer Variations,Interobserver Variabilities,Interobserver Variations,Intra Observer Variability,Intra Observer Variation,Intra-Observer Variabilities,Intra-Observer Variations,Intraobserver Variabilities,Intraobserver Variations,Observer Variations,Variabilities, Inter-Observer,Variabilities, Interobserver,Variabilities, Intra-Observer,Variabilities, Intraobserver,Variability, Inter-Observer,Variability, Interobserver,Variability, Intra-Observer,Variability, Intraobserver,Variation, Inter-Observer,Variation, Interobserver,Variation, Intra-Observer,Variation, Intraobserver,Variation, Observer,Variations, Inter-Observer,Variations, Interobserver,Variations, Intra-Observer,Variations, Intraobserver,Variations, Observer
D015921 Dental Implants Biocompatible materials placed into (endosseous) or onto (subperiosteal) the jawbone to support a crown, bridge, or artificial tooth, or to stabilize a diseased tooth. Dental Implants, Mini,Dental Prosthesis, Surgical,Implants, Dental,Dental Implant,Dental Prostheses, Surgical,Implant, Dental,Prostheses, Surgical Dental,Prosthesis, Surgical Dental,Surgical Dental Prostheses,Surgical Dental Prosthesis,Dental Implant, Mini,Mini Dental Implant,Mini Dental Implants
D016301 Alveolar Bone Loss Resorption or wasting of the tooth-supporting bone (ALVEOLAR PROCESS) in the MAXILLA or MANDIBLE. Alveolar Resorption,Bone Loss, Alveolar,Bone Loss, Periodontal,Periodontal Bone Loss,Periodontal Resorption,Alveolar Bone Atrophy,Alveolar Process Atrophy,Alveolar Bone Atrophies,Alveolar Bone Losses,Alveolar Process Atrophies,Alveolar Resorptions,Bone Atrophies, Alveolar,Bone Atrophy, Alveolar,Bone Losses, Periodontal,Periodontal Bone Losses,Periodontal Resorptions,Resorption, Alveolar,Resorption, Periodontal,Resorptions, Alveolar
D017267 Dental Prosthesis Design The plan and delineation of dental prostheses in general or a specific dental prosthesis. It does not include DENTURE DESIGN. The framework usually consists of metal. Dental Prosthesis Designs,Design, Dental Prosthesis,Designs, Dental Prosthesis,Prosthesis Design, Dental,Prosthesis Designs, Dental
D054893 Cone-Beam Computed Tomography Computed tomography modalities which use a cone or pyramid-shaped beam of radiation. CAT Scan, Cone-Beam,Cone-Beam CT,Tomography, Cone-Beam Computed,Tomography, Volume Computed,CT Scan, Cone-Beam,Cone-Beam Computer-Assisted Tomography,Cone-Beam Computerized Tomography,Volume CT,Volume Computed Tomography,Volumetric CT,Volumetric Computed Tomography,CAT Scan, Cone Beam,CAT Scans, Cone-Beam,CT Scan, Cone Beam,CT Scans, Cone-Beam,CT, Cone-Beam,CT, Volume,CT, Volumetric,Computed Tomography, Cone-Beam,Computed Tomography, Volume,Computed Tomography, Volumetric,Computer-Assisted Tomography, Cone-Beam,Computerized Tomography, Cone-Beam,Cone Beam CT,Cone Beam Computed Tomography,Cone Beam Computer Assisted Tomography,Cone Beam Computerized Tomography,Cone-Beam CAT Scan,Cone-Beam CAT Scans,Cone-Beam CT Scan,Cone-Beam CT Scans,Scan, Cone-Beam CAT,Scan, Cone-Beam CT,Scans, Cone-Beam CAT,Scans, Cone-Beam CT,Tomography, Cone Beam Computed,Tomography, Cone-Beam Computer-Assisted,Tomography, Cone-Beam Computerized,Tomography, Volumetric Computed

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