Buildup and formation of Tartar

Tartar is a calcified substance deposited on the tooth. It is formed when calcium phosphate in the saliva deposits on the plaque (which has not been thoroughly removed) to calcify and harden, turning it into tartar. The surface of the tooth becomes rough and if not removed by a dentist, the colouring substances in the food may be deposited onto the tooth surface - resulting in unsightly stains. In more serious cases, when tartar accumulates on the margin of the gum, it may lead to tooth decay or periodontitis.