不同材料烤瓷冠与金属冠磁共振成像伪影的比较

发布时间：2018-01-24 15:47

本文关键词： 磁共振成像伪影镍铬合金钴铬合金　出处：《国际口腔医学杂志》2016年05期 　论文类型：期刊论文

【摘要】：目的分析不同材料烤瓷冠和铸造冠在磁共振成像(MRI)图像上产生伪影的大小。方法在临床随机选取的右侧上颌第二磨牙模型制作钴铬烤瓷冠、钴铬金属冠、镍铬烤瓷冠、镍铬金属冠各一个,并以丙烯酸树脂冠作为对照,采用1.5 T MRI扫描仪对5个牙冠进行扫描,观察不同材料牙冠成像伪影的大小。结果同一序列中不同材料试件所产生伪影面积的差异均有统计学意义,不同材料试件两两比较,其差异也有统计学意义。钴铬金属冠产生的伪影面积最大,镍铬烤瓷冠产生的伪影面积最小。结论 4种牙冠对MRI的影响不同,口腔金属修复体产生的伪影与材料类型密切相关。
[Abstract]:Objective to analyze the different materials of porcelain crown and crown on magnetic resonance imaging (MRI) artifacts on the image size. Cobalt chromium PFM crown in right maxillary second molars were randomly selected from the clinical model, cobalt chromium metal crown, Ni Cr PFM, Ni Cr metal crown of each one, and the acrylic resin crown as control by 1.5, T MRI scanner to scan 5 crowns, observation of different material crown imaging artifacts. The same sequence in different material specimens produced artifacts in the area had significant differences, different material specimen is 22, there were statistically significant differences between them. The cobalt chromium metal crown the artifacts of the largest area of the Ni CR ceramic crown artifacts. Conclusion: the effect of the smallest 4 crowns of MRI different, closely related artifacts and material types of oral metal restorations produced.

【作者单位】：北京市垂杨柳医院口腔科;北京市垂杨柳医院放射科;
【分类号】：R783.1
【正文快照】： 烤瓷冠和金属冠是在口腔修复领域应用十分广泛的一类修复体。佩戴烤瓷冠和金属冠的患者在进行磁共振成像(magnetic resonance imaging,MRI)检查时会产生金属伪影。以往的研究表明金合金修复体产生的伪影极小,不影响临床诊断[1-2];但是金合金修复体因为价格较高,临床使用有一定

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