Teeth Health: Why does it take so long hurt

Why does it take so long hurt?

Nerve fibres, the way that pain is sent through the body, aren't present in tooth enamel. While the acid is attacking the enamel, you can't feel a thing. 

Once the acid has begun to create a cavity and attacks the dentin under the enamel, the nerve fibres begin to send out a message that something is wrong. But by then, you have tooth decay. 

That's why it's important to have regular, preventive dental check-ups. Don't wait until it hurts!