When you have a cavity or minor area of damage within a tooth, a dental filling is often the means to repair it. While fillings can vary in material (amalgam versus composite), they all have a certain lifespan or finite period of time until they begin to fail. There is no concrete rule on how long you can personally expect your filling to last, but there are some warning signs that may suggest you need a replacement. Once your filling starts to fail, it is important to act promptly and make an appointment with your dentist. (more…)