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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