Question

Next to your canine teeth are the premolars. You have eight premolars in all, four on top
and four on the bottom. The first premolars appear around age 10, with the second premolars
arriving about a year later. They have a completely different shape than both the incisors and
canines. That is because premolars are bigger, stronger, and have ridges - all of which makes
them perfect for crushing and grinding food.
Finally, there are your molars. You have eight of these, four on the top and four on the
bottom. Molars are the toughest of the teeth. They are wider and stronger than premolars, and
they have more ridges. Molars work closely with your tongue to help you swallow food. The tongue
sweeps chewed food to the back of your mouth, where the molars grind it until it is mashed up
and
ready to be swallowed.
By age twenty, four more molars grow in the back of the mouth, one in each corner. These
are called the wisdom teeth. They appear between 12 and 28 months, People do not need wisdom
teeth now, but many years ago these teeth were necessary to help people chew tough plants, which
were an important part of the human diet. Now, many people get their wisdom teeth pulled by a
dentist, a doctor who takes care of teeth, to keep them from crowding their other teeth.
The next time you eat, pay attention to which teeth do which jobs. Having a cookie? Incisors
do a good job of biting into that tasty treat. What about a carrot? Those molars get the job done,
not the teeth in front. How about a slice of pizza or a piece of bread? Your canines will help you
tear at the food, and your premolars and molars will help you grind up that pepperoni pizza or
peanut butter and jelly sandwich. The next time you eat, pay attention to which teeth do which
jobs. Having a cookie? Incisors do a good job of biting into that tasty treat. What about a carrot?
Those molars get the job done, not the teeth in front. How about a slice of pizza or a piece of bread?
Your canines will help you tear at the food, and your premolars and molars will help you grind up
that pepperoni pizza or peanut butter and jelly sandwich.​

Answer 1

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Answer 2

Answer:

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