Modern white fillings are hard-wearing and look good. It is possible to replace your old silver amalgam fillings with composite or ceramic fillings. Usually, if you need a silver filling replaced, your dentist will offer you a white one, but sometimes people decide to have their amalgam filling replaced with white ones to make their teeth look better. The white fillings also do not contain mercury (contained in the silver fillings), a concern for some people as mercury has been linked to health scares. The choice of material is based upon the size, so please discuss it with your dentist.