When a tooth is damaged by decay a filling restores it back to its normal shape and function.
The dentist needs to remove the decayed material when the tooth is decayed, and clean the area and then fill the cavity with a filling material.
To prevent further decay, a filling restores the tooth's shape and function sealing any spaces or cracks where bacteria can enter.
Porcelain, gold, silver, and plastic are filling materials. The dentist will decide which material is the best, depending on the extent of the repair, the cost and the need for cosmetic result.back