Re:Maybe you can answer this question for me

Thanks for the response.
About two years ago I need to get some silver fillings replaced that had worn out. They were replaced with composites. Are all composites safer than silver? I have two silver left to replace and I am wondering if I should also refill the composites just to be sure. Should I call my old dentist to see what the composites were made of? How do you know whats in the replacement composite that the dr. is putting in? Thanks