Dental pellicle formation on the human tooth surface is a physiological process which occurs every day. It is an organic biofilm and protects the enamel of the tooth from deminerlizaton. Food accumulation over the pellicle results in the formation of plaque. This on further calcification by the salivary phosphates leads to the formation of calculus. Hygienic oral practices eliminate the plaque accumulation, preventing calculus formation. Elevated microbial activity and lack of oral hygiene tend to increase the risk for dental caries.