Salivary glands, as the name suggests, are glands that secrete saliva or spit. These glands can be found on the floor of the mouth, under the tongue, and the walls of the mouth. Saliva is useful in digesting. It moistens the mouth to make chewing and swallowing easier and contains enzymes that break down food as well.
Parts of a Tooth
Just like the mouth, the parts and types of teeth also show that tooth and mouth anatomy are strategic and functional for digestion and communication. As humans, we develop two sets of teeth. The first set of 20 deciduous teeth start developing before birth and start falling out around the age of 6. These teeth are also called baby, milk, primary, or temporary teeth. After this, a set of 32 permanent teeth grow in as secondary or adult teeth.
Types of Teeth
At the very front are the four incisors at the top and four at the bottom. Incisors are sharp teeth that often look very angular or square-like. Their purpose is to cut food through biting.
On either side of the incisors are sharp teeth called canines. They’re usually pointed and act as teeth that help pierce food better than the incisors with the upper ones being called cuspids or eyeteeth.
A bit further to the back are the premolars or the bicuspids that grind and mash food. There are four pairs of premolars situated on either side and of either jaw.
Behind the premolars are 12 molars that come in threes. These are called the first, second, and third molars and what they do is chew food to even finer and smaller pieces. The third molars, sometimes called wisdom teeth, could be removed because they could crowd out other teeth and cause problems like pain or infection.