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BAL BHARATI PUBLIC SCHOOL NAVI MUMBAI
TOPICS COVERED IN THIS CHAPTER
IMPORTANCE OF TEETH
TWO SETS OF TEETH -2
Permanent Teeth
STRUCTURE & FUNCTION OF A TOOTH
Enamel : The hard outer layer of the crown
Dentine : Not as hard as enamel, forms the bulk of t h e t o o t h a n d c a n b e sensitive if the protection of the enamel is lost
Pulp : Soft tissue containing t h e b l o o d v e s s e l s a n d nerves . The nerves a re c o n n e c t e d t o t h e g u m through a hole in the root
MICROBES
KINDS OF MICROBES
BACTERIA• Bacteria are single -celled microorganisms
Shapes :
Diseases caused byharmful bacteria :
FUNGI
VIRUSES
PROTOZOA
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