There are many different filling materials that can be used to replace lost tooth structure from trauma, wear, and decay.  We most commonly place either tooth colored material (resin or glass ionomer) or amalgam (silver) fillings.  While amalgam has recently gotten a bad rap, the American Dental Association continues to stand behind its use as a dental filling material.  You can read their most recent statement on its use here.  While tooth colored filling material has an aesthetic advantage, there are limits to its use.  When an area cannot be well isolated and dry, then amalgam or glass ionomer becomes the material of choice.  Dr. Sikora and Dr. Babb do their best to meet your aesthetic desires while also placing the material best suited for each specific circumstance.