Tooth enamel serves as the protective outer layer of the teeth in humans. It is famously recognized as the hardest substance found within the human body. Its primary role is to shield the sensitive inner parts of the tooth, such as the dentin and pulp, from damage and decay.
The structure of tooth enamel is predominantly mineral-based. The main ingredient is a form of calcium phosphate. This mineral exists in a crystalline structure known as hydroxyapatite (chemical formula: \(Ca_{10}(PO_4)_6(OH)_2\)). This specific composition is responsible for enamel's exceptional hardness and its ability to withstand the forces of chewing and resist acid erosion.
Let's look at why the other options are not the main component of tooth enamel:
Based on its composition, tooth enamel in humans is primarily made of calcium phosphate.
A resting person, usually has a pulse rate between ______ and ______ beats per minute
In humans, neck and head are joined by which joint ?
The human skeleton is composed of around ______ bones at birth.
At which period of life, body undergoes changes leading to reproductive maturity?
Milk is no longer called a balanced diet due to the lack of which one of the following?