There are three main types of teeth: incisors, canines, and molars. Incisors are flat teeth located at the front of the mouth that cut food. Canines are sharp, pointed teeth on the sides of the mouth after the incisors that hold and tear food. Molars are flat, wide teeth located at the back of the mouth that grind and chew food. Humans have two sets of teeth, milk (baby) teeth and permanent teeth. Milk teeth number 20 total while permanent teeth number 32 total. Bacteria in the mouth feed on sugar from leftover food and produce acid that causes tooth decay if plaque is not removed by brushing.

1. Teeth types

2. INCISORS
Shape: flat teeth
Location: in front of the mouth
Function: cut the food

3. CANINES
shape: sharp and pointed
Location: on the four sides of the mouth
after the incisors(up and down)
Function: hold and tear the food

4. Molars
Shape :flat and wide
Location: at the back of the mouth
Function: grind and chew the food

5. Let’s sing together

6. Incisors cut the food
Cut the food
Cut the food
Incisors cut the food
But
Canines tear and hold
Canines tear and hold
Tear and hold
Tear and hold
Canines tear and hold
But
Molars grind and chew

7. Human teeth
• Human have two sets of teeth
• Milk (baby) teeth
• Permanent teeth

8. Milk teeth

10. Total number of the milk teeth is
20 tooth
• Incisors: 8 ( 4 up + 4 down)
• Canines: 4 (2 up + 2 down)
• Molars: 8 (4 up + 4 down)
• No premolars in the child’s teeth.

11. Permanent teeth

13. Total number of the permanent teeth
is
32 tooth
• Incisors: 8 ( 4 up + 4 down)
• Canines: 4 (2 up + 2 down)
• Molars: 20 (10 up + 10 down including 4
premolars)
• (The premolars are the first 2 molars at each
molars row)

14. Permanent
teeth
Milk teeth

15. Tooth decay

16. Bacteria
(Tiny organisms that can’t
be seen with our eyes,only
by microscope)

17. Sugar
(From the food particles left
on your mouth when you
don’t brush your teeth)

18. The bacteria will eat the sugar to form
yellow spots called : Plaque and get
out a waste called acid

19. Plaque

20. Sugar + Bacteria
Plaque + Acid
Tooth decay

21. Tooth decay

22. Tooth decay

23. Tooth layers

24. How to keep your teeth
healthy?

25. Brush your teeth twice a
day

26. Use flouride toothpaste
to make your teeth
stronger

27. Eat less sugary food

28. Visit the dentist twice 2
a year