Int J Stomatol

Inter J Stomatol ›› 2016, Vol. 43 ›› Issue (5): 507-510.doi: 10.7518/gjkq.2016.05.004

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Comparison of artifacts on magnetic resonance imaging caused by different porcelain-fused-to-metal crowns and metal crowns

Qin Kun1, Zhang Dongpo2   

  1. 1. Dept. of Stomatology, Beijing Chuiyangliu Hospital, Beijing 100022, China; 2. Dept. of Radiology, Beijing Chuiyangliu Hospital, Beijing 100022, China
  • Received:2015-12-15 Revised:2016-02-02 Online:2016-09-01 Published:2016-09-01

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Abstract: Objective This study aimed to investigate the artifacts of different porcelain-fused-to-metal crowns and metal crowns on magnetic resonance imaging(MRI). Methods One Co-Cr porcelain crown, one Co-Cr metal crown, one Ni-Cr porcelain crown, and one Ni-Cr metal crown were placed in a cylindrical plastic vessel filled with distilled water. An arcrylic resin crown was used as control and then scanned using roution head sequence, including FRFSET2WI, GRET2*WI, and T1FLAIR, on a 1.5 T scanner. The MRI artifact areas of different porcelain-fused-to-metal crowns and metal crowns were calculated and analyzed with variance test. Results ANOVA of factorial design indicated significant differences among the crowns. Co-Cr metal crown produced the largest artifact, whereas Ni-Cr porcelain crown produced the least. Conclusion Various crowns differently affected MRI images. The artifacts produced by the crowns were closely related to the type of material.

Key words: magnetic resonance imaging, artifact, Ni-Co alloy, Co-Cr alloy

CLC Number: 

  • R 783.1

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