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The teeth are accessory digestive organs. People use their teeth to bite and chew food, the first
step in the digestion of food. The long, sharp canine teeth tear up food (like meat). The wide, flat
molars grind and mash up food. While we chew food, the tongue pushes the food to the teeth and
saliva helps digestion and wets the food.
A number of inorganic compounds are used in maintaining the oral and dental hygiene. Most of
them are over the counter (OTC) products. Dental products include anticaries agents (dentifrices
and fluoride salts), polishing agents, and desensitizing agents.