It is called enamel or adamantine.
It is likened to the eggshell as it protects the soft part of the tooth inside.
It is the hardest substance in our body.
It can be worn away by poor oral hygiene. Coffee, tea, wine, cigarettes since they make teeth yellower. Also, food acids and bacteria cause tooth decay and cavities. After eating, acids are created in our mouth.
It can also break or crack and does not grow back on its own.
Teeth with enamel damage are sensitive to cold and heat.
Dry mouth is another factor that negatively affects enamel since saliva takes care of the acids in the mouth.
[Source: http://www.iatronet.gr]
