The effect of 3 T MRI on microleakage of amalgam restorations
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چکیده: (1914 مشاهده) |
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.
Source: DentoMaxilloFacial Radiology Full Text |
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واژههای کلیدی: amalgam، MRI، microleakage، MRI safety، dental filling |
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نوع مطالعه: پژوهشي |
موضوع مقاله:
رادیولوژی دهان، فک و صورت دریافت: 1392/5/3 | انتشار: 1390/10/25
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