25 years ago the choice was gold alloy or amalgam, with 99% being done in amalgam(a mixture of silver, mercury and smaller amounts of other metals).
Today, in Dr. Bacon's office in Flagstaff, AZ we usually use a tooth colored plastic to fill your tooth.
IT has many advantages over amalgam:
1. esthetic- we match to your tooth color
2. no mercury- health issue
3. bonds to your tooth- decreases chance for tooth fracture and need for a crown later.
Of composites, there are many (over 50) different brands and types. Dr. Bacon has done extensive research and uses a few different types depending on the size of the filling and the need for cosmetic results (He uses a different kind for a back tooth than for a front tooth.) He does not choose his filling material based on cost but decides based on physical properties and cosmetic appearance.
Some composites shrink more than others while setting up. This is very important because if the filling shrinks too much while setting it can leave a gap or even lead to tooth fracture.
It is recommended that your tooth color filling be placed with a rubber dam in place which assures a dry field for your filling. Moisture contamination will interfere with the bond of the filling and cause it to leak.
Dr. Bacon will evaluate your situation and pick the material that is best for you.
If you don't live near Flagstaff, be sure your dentist uses a rubber dam and has thoroughly researched his or her materials.
