Enamel thoroughly covers healthy teeth. Enamel is the hardest tissue of human body.
Nevertheless, teeth often develop erosion quite easily. Below the enamel we find the dentin.
Dentin consists in millions of tiny tubules and tubes.
The dental “core” is the pulp that contains the nerve trunk.
Whenever the enamel develops erosion, the dentin tubules get exposed and trigger the response to external stimula such as cold, hot diet, airflow, sweet or sour foods. This response is pain.
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Fuente: Youtube / Checkdent