Are composite (white) fillings safer/ last longer than amalgam (silver) fillings? I have many silver filling that have no problem since it was done 5 years ago but I heard they are not healthy so I am thinking to replace them but I heard white fillings are so week, don't last long(not more than 5 years) and require experienced doctor do do it so accurate. My cavities were deep for those silver filling and the filling are from top and side of the teeth. I don't feel it worth it to replace them unless i know a really experienced dentist in san diego. I also need some advice from those who have got their filling replaced.