Effect of oral alloy post and core on magnetic resonance imaging
10.7518/hxkq.2014.06.014
- VernacularTitle:口腔金属桩核材料对磁共振成像的影响
- Author:
Fang YIN
1
;
Xin LI
;
Qingyun MA
;
Lu WANG
;
Ye SONG
Author Information
1. 辽宁医学院附属第二医院修复科
- Keywords:
magnetic resonance imaging;
alloy post and core;
artifact
- From:
West China Journal of Stomatology
2014;(6):588-591
- CountryChina
- Language:Chinese
-
Abstract:
Objective ??This?study?aims?to?observe?and?compare?the?influences?of?the?casting?alloy?post?and?cores?on?mag-netic?resonance?imaging?(MRI). Methods ??Six?casting?alloy?post?and?cores?were?fabricated?for?the?experimental?groups,?and?zirconia?post?and?core?served?as?the?control.?The?seven?types?of?post?and?cores?were?of?the?same?size?and?shape.?Each?post?and?core?was?orally?fastened?to?a?volunteer?and?then?imaged?with?sequences?of?T1-weighted?spin?echo?imaging?(SE-T1WI),?T2-weighted?turbo?spin-echo?imaging?(TSE-T2WI),?and?diffusion?weighted?imaging?(DWI).?Results ??Cobalt?chromium?alloy?post?and?core?generated?severe?artifacts,?whereas?gold?palladium?alloy?post?and?core?generated?no?obvious?artifacts,?and?no?difference?was?observed?between?the?zirconia?and?the?gold?palladium?alloy?post?and?cores?(P>0.05).?The?pure?titanium?alloy?post?and?core?produced?mild?artifacts.?The?post?and?cores?of?the?titanium,?nickel-cadmium,?and?gold?platinum?alloys?generated?moderate?artifacts?with?no?significant?differences?(P>0.05).?Conclusion ??Different?metal?post?and?cores?have?different?in-fluences?on?MRI.?With?the?exception?of?that?generated?by?cobalt?chromium?alloy,?the?artifact?generated?by?the?single-alloy?post?and?core?does?not?influence?the?image?of?the?normal?head?and?neck.
