Our teeth are one of the strongest parts

of our body.

They are made from proteins

such as collagen,

and minerals such as calcium.

In addition to helping us chew through

even the toughest foods,

they also help us speak clearly.

Most adults have 32 teeth

called permanent or secondary teeth;

8 incisors,

4 canines, also called cuspids,

8 premolars, also called bicuspids,

12 molars,

including 4 wisdom teeth

whereas children have 20 teeth.

All eight of our incisor teeth

are located in the front part of our mouth.

We have four of them in our upper jaw

and four in our lower jaw.

They have sharp edges

that help us bite into food.

Whenever we sink our teeth into something,

such as an apple,

we use our incisor teeth.

The very first teeth we grow are incisors,

appearing when we are around 6 months old.

Canines are four teeth

which sit next to the incisors.

We have two canines on the top of our mouth

and two on the bottom.

Canines have a sharp, pointy surface

for tearing food.

Canines are also called cuspids.

Premolars are eight in number

and sit next to your canines.

There are four premolars on top

and four on the bottom.

Premolars are bigger than canines and incisors.

They have a flat surface with ridges

for crushing and grinding food

into smaller pieces

to make it easier to swallow.

Baby molar teeth are replaced

by adult premolars.

Infants and young children do not have premolars

because these teeth do not start to come in

until around age 10.

Molars are 12 in number

and are our biggest and strongest teeth.

We have six on the top

and six on the bottom.

The large surface area of your molars

helps them grind up food.

When you eat,

your tongue pushes food

to the back of your mouth.

Then,

your molars break up the food

into pieces small enough

for you to swallow.

The molars include four wisdom teeth,

which are the last set of teeth to come in.

Wisdom teeth are also called third molars.

They usually come in

between the ages of 17 and 25.

Not everyone has enough room in their mouth

for this last group of teeth.

Sometimes, the wisdom teeth are impacted,

meaning they are stuck under the gums.

This means

they do not have enough space to grow.

If you do not have room for your wisdom teeth,

you'll likely have to have them removed.

Can you recall,

which type of teeth

are the first ones we grow?