Permanent teeth are the second set of teeth in mammals that replace the deciduous (baby) teeth and are meant to last a lifetime.
Here's a more detailed explanation:
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Succession: Permanent teeth develop after the primary (baby or milk) teeth. As the permanent teeth erupt, they cause the roots of the primary teeth to resorb, leading to the loosening and eventual shedding of the primary teeth.
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Quantity in Humans: In humans, the permanent dentition typically consists of 32 teeth, including:
- 4 incisors (for cutting)
- 2 canines (for tearing)
- 4 premolars (for grinding)
- 6 molars (for grinding) in each jaw. The molars include the wisdom teeth (third molars), which may not erupt in all individuals.
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Lifespan: These teeth are intended to persist into old age, although tooth loss can occur due to factors like decay, gum disease, or injury.
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Replacement: Unlike some animals, humans do not naturally generate a third set of teeth. Therefore, it's crucial to maintain the health of permanent teeth through proper oral hygiene and regular dental care.
In summary, permanent teeth are the adult set of teeth that replace the baby teeth, designed for lifelong use and totaling 32 in a complete set.
