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What is the Hardest Substance in Our Body?

Published in Human Biology 2 mins read

The hardest substance in our body is enamel, the outermost layer of our teeth.

Enamel is composed primarily of hydroxyapatite, a mineral that is incredibly strong and resistant to wear and tear. It's so hard that it can even scratch glass!

Enamel plays a vital role in protecting our teeth from damage caused by chewing, biting, and acidic foods and drinks.

Although enamel is very strong, it is not indestructible. It can be damaged by:

  • Acidic foods and drinks: Sugary drinks, citrus fruits, and other acidic foods can erode enamel over time.

  • Tooth decay: Bacteria in our mouths can produce acids that attack enamel, leading to cavities.

  • Excessive brushing: Brushing too hard or using a hard-bristled toothbrush can wear down enamel.

  • Teeth grinding: Grinding your teeth (bruxism) can also damage enamel.

    It's important to take care of our enamel by:

  • Brushing twice a day with fluoride toothpaste: Fluoride helps strengthen enamel and make it more resistant to decay.

  • Flossing daily: Flossing removes plaque and food particles that can contribute to tooth decay.

  • Eating a balanced diet: Limit sugary and acidic foods and drinks.

  • Visiting your dentist regularly: Regular checkups and cleanings can help prevent enamel damage.

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