Dental Caries (Decay of Teeth).
The acids produced in dental plaques begin the decay of tooth. Once these acids start the demineralization of the tooth enamel, proteolysis of the matrix of the tooth enamel takes place through the action of proteolytic enzymes released by bacteria. Microorganisms penetrate further into the decomposing matrix leading to dental decay or dental caries. Once the hard enamel barrier has been broken, the bacteria invade the dentin and pulp of the tooth resulting in its death.

Minimal ingestion of sucrose, daily brushing, flossing and mouthwashes are the only ways to protect teeth from decay because there are no drugs available against dental caries. Dental plaques should be removed by professional cleaning atleast twice a year.