口腔医学研究

口腔医学研究 ›› 2016, Vol. 32 ›› Issue (8): 812-815.DOI: 10.13701/j.cnki.kqyxyj.2016.08.009

• 基础研究论著 • 上一篇    下一篇

4种常用口腔金属材料MRI伪影对比研究

斯琴高娃1,迪丽努尔·阿吉2*,王星2,廖博2,齐鲁3,帕孜丽娅·吐达洪3,比沙拉·叶尔努尔3   

  1. 1. 新疆医科大学研究生学院第一临床医学院 新疆 乌鲁木齐 830054;
    2. 新疆医科大学第一附属医院口腔修复科 新疆 乌鲁木齐 830054;
    3. 新疆医科大学第二附属医院口腔科 新疆 乌鲁木齐 830000
  • 收稿日期:2016-03-07 出版日期:2016-08-26 发布日期:2016-08-26
  • 通讯作者: 迪丽努尔·阿吉,E-mail:1773250421@qq.com, 830054
  • 作者简介:斯琴高娃(1990~ ),女,新疆人,硕士在读,主要从事口腔修复的临床治疗工作。
  • 基金资助:
    国家自然科学基金青年基金项目(编号:2015211C111)

MRI Artifacts of Four Commonly Used Dental Metal Materials: A Comparative Study

Si Qin-gaowa1, Dilinuer·AJi2*, Wang Xing2,Liao Bo2, Qi Lu3,Paziliya·Tu Da-hong3,Bishala·Ye Er-nuer3   

  1. 1. The First Clinical Medical College, Xinjiang Medical University. Urumqi 830054, China;
    2. Department of Prosthodontics, The First Affiliated Hospital of Xinjiang Medical University. Urumqi 830054, China;
    3.Department of Stomatology, The Second Affiliated Hospital of Xinjiang Medical University. Urumqi 830000, China
  • Received:2016-03-07 Online:2016-08-26 Published:2016-08-26

摘要： 目的:比较4种不同口腔金属材料在MRI检查中伪影大小。方法:在标准备牙模型上制作钴铬合金、纯钛、银钯、金钯金属全冠实验组以及二氧化锆全瓷冠对照组,并用25 cm×13 cm×10 cm(长×宽×高)塑料容器蒸馏水包埋后放置于1.5T自旋回波序列T2加权像比较伪影大小。结果:不同金属在同一自旋回波序列中产生伪影大小不同,钴铬合金、纯钛、银钯金属冠的伪影分别为(450±665)、(343±322)、(141±186) mm2,3组间两两比较均存在差异(P＜0.05),金钯金属冠与对照组二氧化锆相比伪影大小未见明显差异。结论:4种金属MRI检查中伪影的大小钴铬合金＞纯钛＞银钯合金＞金钯合金。

关键词: 口腔材料, 金属, 伪影, MRI

Abstract: Objective: To compare the MRI artifacts of four different dental metal materials, providing clinical evidence for prosthodontic doctors. Methods: Full crowns of Co-Cr alloy, pure titanium, silver palladium, and gold palladium were made according to a standard model.Full crown of zirconium dioxide was taken as control. All crowns were embedded in a 13cm × 25cm×10 cm (length x width x height) plastic container filled with distilled water.Artifacts were compared on the T2-weighted images in 1.5 T spin echo sequences. Results: Different materials showed different artifacts in the same spin echo sequence.Artifacts of Co-Cr alloy, pure titanium, silver palladium crownswere (450±665), (343±322), (141±141) respectively. There were significant differences between them (P<0.05). There was no significant difference between gold palladium group and zirconium dioxide group. Conclusion: MRI artifacts of the four materials in descending order were as follows: Co-Cr＞pure titanium＞silver palladium＞gold palladium.

Key words: Oral materials, Metal, Artifacts, MRI

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