Question

which is the hardest substance in human body ​

Answer 1

Enamel is the hardest substance in the human body and contains the highest percentage of minerals (at 96%), with water and organic material composing the rest. The primary mineral is hydroxyapatite, which is a crystalline calcium phosphate.

Answer 2

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$\green\longmapsto\:$ The hardest substance in human body is enamel (which forms the crown of the tooth )

$\green\longmapsto\:$ It is secreted by ameloblasts of ectodermal origin.

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