MSN: How Many Teeth Are Human Adults Supposed To Have And What Is It Called When They Have Too Many? How Many Teeth Are Human Adults Supposed To Have And What Is It Called When They Have Too Many? Normal adult humans have 32 teeth.

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Rarely, someone has a condition called hyperdontia where they have more than 32. This happens with around 1-2% of the population. Sometimes, those with hyperdontia ... Detroit News: Just4Kids: Why do people have baby teeth and adult teeth?

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