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Revision Notes

Human Body- Teeth — Revision Notes

ICSE · Class 4 · Science

Human Body- Teeth revision notes for ICSE Class 4 Science: 4 topics in quick points. Part of the ICSE Class 4 Science syllabus.

43 questions30 flashcards4 concepts

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Key Topics to Revise

1

When Do We Get Teeth?

  • Every baby is born with teeth hidden in the gums.
  • Milk teeth start appearing around 6 months of age. This is called teething.
  • By the age of 3 years, a child has 20 milk teeth.
2

Parts of a Tooth

  • A tooth has two main parts: Crown and Root.
  • Crown is the visible part above the gums.
  • Root is inside the gum and fixed in the jawbone.
3

Types of Teeth and Their Functions

  • There are four types of permanent teeth: Incisors, Canines, Premolars, and Molars.
  • Incisors (8 total): Front teeth with sharp edges for cutting food.
  • Canines (4 total): Pointed teeth beside incisors for tearing food.
4

Tooth Decay and Care of Teeth

  • Tooth decay happens when bacteria in the mouth eat sugar and produce acid.
  • This acid attacks the enamel and causes cavities (holes in teeth).
  • Dental plaque is a sticky film of bacteria that causes decay.

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Full Notes

Key Concepts

Babies start getting their first teethA tooth has four main partsWe have four types of teethTooth decay happens when bacteria

Frequently Asked Questions

What are the important topics in Human Body- Teeth for ICSE Class 4 Science?
Key topics in Human Body- Teeth include When Do We Get Teeth?, Parts of a Tooth, Types of Teeth and Their Functions, Tooth Decay and Care of Teeth. Study these first, then practise questions on each for Class 4 exams.
How should I revise Human Body- Teeth for Class 4 exams?
Learn the core ideas first, then work through the 43 practice questions on Human Body- Teeth. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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