Abstract:

BACKGROUND: Magnetic resonance imaging is commonly used in clinical imaging detection. The dental metallic materials may produce the imaging artifacts during magnetic resonance imaging detection which may influence the quality of the image and the accuracy of the diagnosis.
OBJECTIVE: To analyze the intensity of the artifacts produced by different dental metallic materials in magnetic resonance imaging as well as the influential factors to the artifacts.
METHODS: A total of nine articles related to the effect of different dental metallic materials on magnetic resonance imaging in the past 10 years were analyzed. The size of the artifacts produced by the commonly used dental metallic materials was analyzed from different aspects, such as the cobalt-chromium alloy, nickel-chromium alloy, titanium alloy, gold-platinum alloy, silver platinum alloys and pure titanium. The factors that affect the intensity of the artifacts were compared.
RESULTS AND CONCLUSION: Cobalt-chromium alloy can produce the biggest artifact in the magnetic resonance imaging, and the artifact is increased with the enhancement of strength of the magnetic field. The artifact strength produced by the hard cobalt-chromium alloy is bigger than that produced by the soft cobalt-chromium alloy; the artifact strength produced by nickel-chromium alloy is bigger, and the smallest artifact strength is produced by gold-platinum alloy, silver platinum alloys and pure titanium. The interference factor of magnetic field intensity has no significant effect on the artifact size.