Презентация к уроку "Зубы"

A beautiful smile and straight teeth – dream of millions.

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Tooth – organ that serves mainly for primary mechanical processing of food. It is also involved in the formation of speech sounds.

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VOCABULARY

• Enamel- эмаль
• Pulp- пульпа
• Dentin- дентин
• Nerves- нервы
• Blood vessels- кровеносные сосуды
• Tooth decay- разрушение зуба
• Acid bacteria- кислотная бактерия
• Permanent teeth- постоянные зубы
• Milk teeth- молочные зубы

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Make the word-expressions

• tooth, blood, acid, milk, permanent,
• … bacteria
• … decay
• … vessels
• … teeth

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The structure of the tooth in the cut:

Enamel

Pulp

nerves

dentin

Blood vessels

The tooth pulp consists of loose connective tissue with lost of blood and lymphatic vessels, nerves.

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The external structure of the tooth:

Crown - коронка

Neck - шейка

Root - корень

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We have three main types of teeth

• CANINES - КЛЫКИ

• MOLARS - КОРЕННЫЕ ЗУБЫ

• INCISORS - РЕЗЦЫ

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Functions of teeth:

Incisors – bite (кусать,надкусывать)

Canines – tear (рвать)

Molars – grind (перемалывать), chew ( жевать )

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Read and match

• Bite Жевать
• Tear Перемалывать
• Grind Кусать
• Chew Рвать
• Canines Резцы
• Molars Клыки
• Incisors Коренные зубы

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From mouth to stomach!

• Fill in: tear, chew, bite, grind.
• The food you eat goes on a long journey which starts as soon as you put it in to your mouth and begin to… . First, you … into the food with your sharp incisors. Then, you use the canines … it into small pieces. Then, the molars… the food so it is ready to be swallowed. From there, the food passes down your throat and into your stomach.

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Did you know …?

• Humans have milk teeth (about 20) and permanent teeth (about 32).
• Pigs have 44 teeth.

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The effect of smoking on the teeth

• It appears bad breath, yellowing occurs and the destruction of enamel, the destruction of gum (десна) around the teeth -parodontoz.

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Caries destruction of tooth enamel.

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Stages of development of caries (стадии развития кариеса)

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Advices

• If you want to have beautiful teeth, you should:
• If you want to have beautiful teeth, you should:

• use a toothpaste with fluoride ( фтор )

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• Systematically visit the dentist

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• After the meal should be carefully rinse your mouth.
• Before going to sleep and in the morning to brush your teeth.
• Toothbrushes regularly wash with soap and water.
• The toothbrush is changed every 3 months .
• More often eat vegetables and fruits.

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Check your answers

• Quiz
• 1. Our teeth are made of…
• a. acid
• b. fluoride
• c. enamel
• 2. Human beings have… permanent teeth.
• a. 20
• b. 32
• c. 44
• 3. We need… for good teeth.
• a. bacteria
• b. calcium
• c. decay

• 4. We have three types of teeth – incisors, canines and...
• a. crowns
• b. molars
• c. roots
• 5. It is the… that contains the nerve of each tooth.
• a. pulp
• b. layer
• c. bone

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Thank you for your attention!

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