Plastic, hardening material, which is filled with the defect formed in the tooth, the cavity in order to restore the anatomical and functional integrity of the tooth.
Seals are cement, metal, plastic, etc. The choice is made depending on the evidence. For example, cement or plastic are used to seal the front teeth, since this material is more similar to the color of tooth enamel.
Metal - resistant to mechanical factors when chewing food, but cosmetically not suitable for anterior teeth (in color). A very strong and durable amalgam filling, unfortunately, paints the whole tooth in a dark color. Composite seals are the most promising at present.