1. Composite Fillings
Composite fillings are also called plastic or white fillings. Getting this kind of filling depends on where the tooth is in your mouth. We bite down hard on our back teeth [molars], so a plastic filling may not be a good choice. Talk to your dentist about other options.
To place this filling, your dentist cleans all decay from the tooth and puts a glue [or bonding material] on the inside of the hole. Composite resin is put into the hole in thin layers. Each layer gets hard with the help of a special light that your dentist holds over the tooth. When the last layer of the filling is hard, your dentist shapes the filling so it looks and feels natural.
2. Glass Ionomer Materials
Glass ionomer materials are only used in teeth where you do not bite down hard. There have not been many studies about how long this kind of filling lasts. Newer forms of the filling may be stronger and last longer. Research is underway to evaluate the effectiveness of these materials.
3. Porcelain Materials
Porcelain materials are the most common type of dental ceramic used by dentists. They are hard and brittle. Porcelain and metal can be combined to make a strong, tooth-coloured crown.
Dental porcelain is made in a dental lab. Unless you have a bad tooth-grinding habit or some other problem, a combination of porcelain and metal can be used anywhere in the mouth.