fa The effect of 3 T MRI on microleakage of amalgam restorations رادیولوژی دهان، فک و صورت Oral and Maxillofacial Radiology پژوهشي Research <p> <strong>Objectives:</strong> To evaluate the effects of 3 T magnetic field on microleakage of amalgam restorations containing three different types of silver (Ag). </p><p> <strong>Methods:</strong> 60 extracted teeth were restored with three different types of amalgam filling materials. Restored teeth were sectioned mesiodistally and divided into experimental and control groups. Experimental groups were exposed to a magnetic field of 3 T for 20 min. All samples were plunged into 2% basic fuchsin solution and examined under a digital microscope by three different observers with regard to microleakage. </p><p> <strong>Results:</strong> Statistical analysis showed significant differences in microleakage between the groups exposed to MRI and controls, whereas differences in microleakage between amalgam types were insignificant. </p><p> <strong>Conclusions</strong>: The primary risk of MRI systems arises from the effects of its strong magnetic field on objects containing ferromagnetic materials. An MRI of 1.5 T is known to be safe for amalgam restorations. However, our research indicates that MRI is not completely devoid of any effects on amalgam restorations. </p><hr><p></p><p> <strong>Source: </strong>DentoMaxilloFacial Radiology </p><p> <a href="http://dmfr.birjournals.org/content/42/8/20130072.abstract" target="_blank"><font color="#0000ff">Full Text</font></a></p> amalgam, MRI, microleakage, MRI safety ,dental filling 0 0 http://idai.ir/browse.php?a_code=A-10-32-1419&slc_lang=fa&sid=1 S Yilmaz selmiyard@gmail.com 10031947532846006520 10031947532846006520 Yes Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kirikkale University, Kirikkale, Turkey M Misirlioğlu 10031947532846006521 10031947532846006521 No Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kirikkale University, Kirikkale, Turkey