Question 173

The hard enamel layer of teeth is:

Solution

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

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SSC CHSL 1 November 2015 Morning Shift

The hard enamel layer of teeth is:

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