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Revision Notes

Human Body- Teeth

ICSE · Class 4 · Science

Quick revision notes for Human Body- Teeth — ICSE Class 4 Science. Key concepts, formulas, and definitions for last-minute revision.

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 Complete Overview of Teeth Structure and Care, Human Body: The Teeth – Chapter Overview, Timeline showing when milk teeth appear from birth to age 3. These are the concepts ICSE Class 4 examiners draw on most — study them first, then practise related questions.
How to score full marks in Human Body- Teeth — ICSE Class 4 Science?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and 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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