Human teeth 2

prepared by sherzad qadir
university of suliamani
college of science
biology department
4th stage(2012-2013)

1. University of sulaimania
School of science
Dp:biology
Practical comparative anatomy
Prepared by; HUMAN TEETH
Sherzad.qadir abdullah

2. Teeth are Made of:
The hard material of the tooth is composed of calcium,
phosphorus, and other mineral salts.
The material in the majority of the tooth is called dentine.
The hard, shiny layer that you brush is called the enamel.

3. Human
Teeth
 You have teeth so that you can bite, crush or break your food.
 Teeth help to break down food so that your digestive system
can get the nutrients out of the food.
 You need energy to stay alive.
 Humans are omnivores. They eat plants and meat
In adult humans there are 32 permanent teeth.

4. Structure of a tooth
External parts of a tooth

5. Internal Parts of a Tooth

6. Human Anatomy

7. ENAMEL DENTINE
PULP CAVITY

8. TYPES OF TEETH AND FUNCTION
INCISORS
wide, flat, sharp cutting edge
and snipping food
CANINE
Shaped like daggers and
used for cutting
gripping,ripping food.
sometimes called eyeteeth.
MOLARS AND
PREMOLARS
Flat surface used for
grinding molar teeth large
but pre-molar is smaller

9. TOOTH DECAY
NERVES
Blood Vessels

10. Tooth Eruption Chart
Tooth Primary Permanent
Upper Teeth
Central Incisor 8-12 months 7-8 years
Lateral Incisor 9-13 months 8-9 years
Canine 16-22 months 11-12 years
1st Premolar - 10-11 years
2nd Premolar - 10-12 years
1st Molar 13-19 months 6-7 years
2nd Molar 25-33 months 12-13 years
Wisdom Tooth - 17-21 years
Lower Teeth
Central Incisor 6-10 months 6-7 years
Lateral Incisor 10-16 months 7-8 years
Canine 17-23 months 9-10 years
1st Premolar - 10-12 years
2nd Premolar - 11-12 years
1st Molar 14-18 months 6-7 years
2nd Molar 23-31 months 11-13 years
Wisdom Tooth - 17-21 years

11. Type of teeth

12. The teeth . . .
humans have
8 incisors I
4 canines C
8 premolars P
12 molars M

abbreviations
molar
pre molar

13. foods are good for our teeth

14. Foods that cause tooth decay

15. cavities caused
Bacteria causes a build
up of plaque.
Plaque acid attacks the tooth
The tooth eventually rots away

16. Brush your teeth twice a day
Try not to eat too many sweets
Visit the dentist twice a year

18. 1.JoelWAger III,1 Ravi K Nalla,1,2,3 Guive Balooch,1,4 Grace
Kim,1,2 Megan Pugach,4 Stefan Habelitz,4
GraysonWMarshall,4 John H Kinney,5,6 and Robert O
Ritchie1,2 (2006).the Increasing Fragility of Human Teeth
With Age,Published by American Society for Bone and
Mineral Research,Volume 21(12):1879-1880.
2.Dr. Yusuf Emes Bull Int Assoc Paleodont. 2011;5(1):37-47.
Istanbul University Faculty of Dentistry, Department of
Oral and Maxillofacial Surgery Istanbul, Turkey
3.www.ischool.zm/media/dentition_in_humans
4.www.auburn.edu/academic/classes/zy/../Tooth
DevelopmentTxt
5.www.users.forthnet.gr/ath/abyss/dep1151.htm :
21/03/2009
References

19. THANK YOU FOR LISTENS