What is Tooth Enamel?

Have you ever wondered about tooth enamel? What exactly is it? How important is it? How can you protect it? Here are the answers to all your questions on enamel.

The enamel on your teeth is the hardest and most highly mineralised substance in your body. It covers the outer layer of each tooth and is the most visible part of the tooth. Enamel is made up mostly of minerals, primarily hydroxyapatite. The colour can vary from light yellow to a greyish white; since it is semi-translucent, enamel is only partially responsible for the colour of your teeth.

As enamel plays a major role in protecting your teeth from cavities, you should do everything in your power to prevent it from eroding. Enamel forms a strong barrier that protects the inner layers of your teeth from the effects of acids and plaque; it also protects the sensitive inner layers of your teeth from foods and beverages that are very hot or very cold.

When enamel is destroyed, your body does not produce more to replace it. Unlike other parts of your body – such as bones, for instance – enamel does not contain any living cells, so it cannot regenerate.

You can protect your enamel by avoiding foods that are known to cause a lot of damage. Sugary foods and drinks, together with acidic fruits and beverages, are among the most damaging to your tooth enamel. When those substances stick to your teeth and interact with germs in your mouth, lactic acid is produced and can damage your enamel. Avoid these foods when you can. If you do consume them, remember to rinse your mouth with water first, then brush thoroughly.

Very hard foods, like hard candy or ice cubes, can also damage your enamel by causing it to crack or chip. As such, these foods should also be avoided. If you do indulge in hard candy, suck on it rather than biting down on it.

Of course, you can also protect your enamel by practising good oral hygiene habits and visiting your dental professional for regular professional cleanings.

Enamel is an important substance that deserves to be taken care of and protected as part of good oral hygiene. You can learn more about tooth anatomy in the Colgate Oral Care resources.


This article is intended to promote understanding of and knowledge about general oral health topics. It is not intended to be a substitute for professional advice, diagnosis or treatment. Always seek the advice of your dentist or other qualified healthcare provider with any questions you may have regarding a medical condition or treatment.

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What Are The Different Parts Of A Tooth?

Each tooth has several distinct parts; here is an overview of each part:

  • Enamel – this is the outer and hardest part of the tooth that has the most mineralized tissue in the body. It can be damaged by decay if teeth are not cared for properly.

  • Dentin – this is the layer of the tooth under the enamel. If decay makes it through the enamel, it next attacks the dentin — where millions of tiny tubes lead directly to the dental pulp.

  • Pulp – this is the soft tissue found in the center of all teeth, where the nerve tissue and blood vessels are located. If tooth decay reaches the pulp, you usually feel pain and may require a root canal procedure.