A tooth is made up of 3 layers, the outermost white, hard covering is the enamel. The middle layer is slightly yellowish and contains some nerve endings. The innermost layer is the pulp which contains the soft tissues, blood vessels and nerves.
When the cavity is in the enamel or dentin, then the decay is removed and tooth is filled with a tooth coloured material like composite resin or glass ionomer which releases fluoride and protects the tooth from further decay and helps in remineralization. The fillings resemble natural tooth and cannot be made out. This helps the child to chew well and also improves the self confidence.Authored By : Dr. S. Hemamalathi and Dr. K. S Senthil Kumar