If there is presence of caries in your mouth & to prevent further spread of decay visit your dentist. The dentist will remove the decay & restore the tooth with suitable dental fillings material in order to prevent further spread of decay & strengthen the affected tooth.
Composite is tooth colored permanent resin filling material. Tooth filled with composite filling materials looks like natural tooth & composite fillings are more durable.
Silver Fillings can be easily replaced with more natural looking composite fillings.
Earlier the trend was to have amalgam fillings (silver) or gold filling restorations. These fillings contain mercury which is poisonous to the body as well as the environment. Also the amalgam fillings are generally not as advantageous as composite fillings because they demand more of a tooth removal and are susceptible to corrosion.