Tooth decay is the destruction of tooth material, which includes:
- Enamel—the hard outer surface of the tooth
- Dentin—the second softer layer beneath the enamel
- Pulp—the inside of the tooth containing the nerve and blood supply
- Root—the area of the tooth anchoring it in the bone
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Everyone has bacteria in their mouths. The bacteria eat sugars that are left on the tooth, which then creates acid. The acid and the bacteria form plaque on the teeth. This plaque clings to your teeth. It holds the acid to the tooth. The acid wears away the tooth. Over time, the acid can lead to tooth decay.
Last reviewedAugust 2014by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.