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- Title
Magnetic resonance imaging in zirconia-based dental implantology.
- Authors
Duttenhoefer, Fabian; Mertens, Marianne E.; Vizkelety, Josef; Gremse, Felix; Stadelmann, Vincent A.; Sauerbier, Sebastian
- Abstract
Objectives X-ray-based planning and post-implantation assessment of titanium implants is the commonly accepted standard to date. However, new implant materials such as zirconia (ZrO2) have become available, and magnetic resonance imaging may be a valuable alternative with these implants. The present in vitro study investigated artifacts produced by titanium and zirconia implants in magnetic resonance imaging ( MRI) and assessed the accuracy of pre-implant planning and post-implantation assessment comparing MRI to standard X-ray-based imaging modalities: Orthopantomogram ( OPT), cone beam ( CBCT), and computed tomography ( CT). Materials and methods Twelve porcine mandibles were prepared and scanned ( MRI, OPT, CBCT, μ CT), and bone height above the nerve canal was measured. Specimens were implanted with either two titanium or zirconia implants and rescanned to investigate the influence of implant materials on post-implantation assessment. MRI and μ CT artifacts were quantified with implants embedded in gelatin phantoms and porcine specimens. Results Compared with CBCT set as standard, μ CT, OPT, and MRI showed similar accuracy in pre-op bone height measurements. Post-implantation, while titanium implants induced a strong B0-field distortion resulting in extensive signal voids, zirconia implants were clearly depictable with only minor distortions. Conclusions Excellent contrast, limited artifacts, radiation-free and accurate implant assessment may indicate that MRI is a valuable imaging alternative for zirconia-based implant dentistry.
- Subjects
MAGNETIC resonance imaging; DENTAL implants; ZIRCONIUM oxide; CONE beam computed tomography; X-ray imaging; MEDICAL artifacts; PANORAMIC radiography; TITANIUM
- Publication
Clinical Oral Implants Research, 2015, Vol 26, Issue 10, p1195
- ISSN
0905-7161
- Publication type
Article
- DOI
10.1111/clr.12430