Permanent blue discoloration of gums or teeth discoloration may also occur. Dental chewing gums claim to improve dental health. Periodontal disease is the inflammation of the gums. A toothbrush is an oral hygiene instrument used to clean the teeth, gums, and tongue. It is a major component of many plant gums, including gum arabic. Most chewing gums are considered polymers. They are colored pink and white, with pink representing the gums and teeth being white. Gingivitis is a non-destructive disease that causes inflammation of the gums. It can be found in various products which include chewing gums and lozenges. CMC is used in chewing gums, margarines and peanut butter as an emulsifier. Forms of chewing gums were also chewed in Ancient Greece. "Granny Gums", who had only three or four teeth. The gingiva ("gums") is the mucosal tissue that overlays the jaws. Gingival enlargement is an increase in the size of the gingiva (gums). This leads to calculus buildup, which compromises the health of the gingiva (gums).