What is the chemical name of the substance that forms the tooth enamel in the human body?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. Calcium hydroxyapatite.
The chemical substance that forms the tooth enamel in the human body is Calcium Phosphate, primarily in the crystalline form of Hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂). Hydroxyapatite gives enamel its hardness, making it the hardest tissue in the human body. It protects teeth from mechanical damage and bacterial action during chewing and eating. Enamel also contains small amounts of other minerals such as magnesium, sodium, and fluoride, which enhance its strength. However, unlike bone, enamel does not regenerate once damaged, highlighting the importance of good oral hygiene for its preservation.