Which human body part is the hardest?
- Tooth enamel:Tooth enamel is the hard, outer surface layer of your teeth that serves to protect against tooth decay. In fact, tooth enamel is considered the hardest mineral substance in your body, even stronger than bone. Despite its strength, everyday acids that develop from certain foods and drinks, particularly those that are sweet or contain starch, can put your enamel at risk. Plaque bacteria produce acids that can weaken and destroy tooth enamel. Acids can attack and soften the tooth surface. And once your enamel is gone, it can be gone for good.
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