Author: Yilmaz S, Misirlioğlu M.
Source: Dentomaxillofacial Radiology
Year: 2013
Comment:
Abstract / Excerpt:
OBJECTIVES:
To evaluate the effects of 3 T magnetic field on microleakage of amalgam restorations containing three different types of silver (Ag).
METHODS:
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.
RESULTS:
Statistical analysis showed significant differences in microleakage between the groups exposed to MRI and controls, whereas differences in microleakage between amalgam types were insignificant.
CONCLUSIONS:
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.
Citation: Yilmaz S, Misirlioğlu M. The effect of 3 T MRI on microleakage of amalgam restorations. Dentomaxillofacial Radiology. 2013; 42(8):20130072.