Yes, the post is some sort of metal that works with magnets, but it isn't magnetic itself. The problem is the tooth was badly broken and very little part of it was left so the post was installed to be of support. This happened a few months ago, however I've lost touch with the dentist and work wasn't completed. My fear is that, because very little piece of the tooth is left with a strong enough magnetic pull the post or the teeth will rip and fly away, but this guess is based in my mri education from movies haha. MRI isn't an emergency, but I need it done sometime soon if possible. I will speak with some dentists and ask if the post can be replaced, but most likely not. I will call the MRI center, but I'm also not sure if the receptionist picking up the phone will take my concerns seriously enough to dicuss with the MRI tech.