Wisdom Teeth, Which Tooth is it?
A wisdom tooth is the third and last molars on both sides of the upper and lower jaws. They are also the last teeth to erupt from the gums; they normally emerge when an individual is in their late teenage years or just beginning their twenties.
The enamel which is the external layer of the tooth is the hardest tissue in the human body, but it is breakable. If for any reason the enamel is fractured, the damage can easily spread to the softer dentin layer below and the dental pulp chamber holding the tooth nerves in the core of the tooth.