For the past 150 years, dentists have been placing metal fillings to replace decayed or fractured tooth structure. In the past few years, dentistry has progressed to where we can now restore your teeth with resin bonded materials that are significantly more advanced than the silver amalgam fillings of old. Silver amalgam, when initially placed, have openings with the tooth big enough for bacteria and saliva to penetrate. When they corrode, larger openings occur while water pe