Teeth

Teeth

Teeth are hard, calcified structures found in the jaws of many vertebrates. They are primarily used for biting and chewing food, but they also play a role in speech and aesthetics.

Anatomy of Teeth

Teeth are composed of several layers:

• Enamel: The hard, outer layer that protects the tooth.
• Dentin: The layer beneath the enamel, which is less hard and contains microscopic tubules.
• Pulp: The innermost part of the tooth, containing nerves and blood vessels.

Types of Teeth

There are four main types of teeth in humans:

• Incisors: The front teeth used for cutting food.
• Canines: The pointed teeth next to the incisors, used for tearing food.
• Premolars: The flat-topped teeth behind the canines, used for crushing and grinding food.
• Molars: The large, flat teeth at the back of the mouth, designed for grinding food.

Dental Health

Maintaining dental health is crucial for overall well-being. Key practices include:

• Regular brushing and flossing
• Routine dental check-ups
• A balanced diet low in sugar

Common Dental Issues

Some common dental issues include:

• Cavities: Decay caused by bacteria.
• Gum disease: Inflammation and infection of the gums.
• Tooth sensitivity: Discomfort in response to hot, cold, or sweet stimuli.

Fun Facts

• Humans typically have 20 primary teeth and 32 permanent teeth.
• The hardest substance in the human body is tooth enamel.

See Also

• Dental hygiene
• Orthodontics
• Tooth decay

References

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