Mon Prof Augmenté
Tooth Decay Stages
Age 12 · Health
Decay can start in a tiny pit on a tooth’s outer surface. If it is not treated, it moves deeper into the tooth and can reach the sensitive center, causing severe pain.
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In the picture
- Small pit in enamel: the first, often invisible start of decay
- Cavity reaching dentine: decay has passed the enamel into the softer yellow layer
- Inflamed pulp: decay has reached the nerve-rich center and can cause severe toothache
Examples
- A sugary soda sipped all afternoon can feed the bacteria that make tooth decay.
- A dentist can fill a small cavity before it reaches the nerve.
Key takeaways
- Decay starts small and can be painless at first.
- Once decay reaches the pulp, the tooth can hurt badly and needs treatment.
Quiz: Tooth Decay Stages (Age 12)
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What is true about tooth decay when it first starts?
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After decay passes through the enamel, where does it go next?
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What can happen if decay reaches the pulp?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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