Wisdom teeth normally erupt between the ages of 17- 25 years. We have totally, four wisdom teeth, two, in both upper and lower jaws. Wisdom teeth get impacted (fail to come in the mouth), because of lack of space.The reason for lack of space could be many, but prime reason is gradually smaller size of our jaws, as a part of evolutionary process. Our diet has undergone change, whereby, we hardly chew our food. Most of the times, we simply swallow. There is not sufficient exercise for the Muscles of Mastication.

Impacted wisdom teeth can cause lot of problems. Sleeping, or horizontal placement, can push the tooth in the front, leading to pressure decay. This results in disturbed contact between its neighbouring teeth. 

It can be easily removed by small surgical procedure in a dental set up under local anesthesia. Patients can expect some discomfort for a period of 4-5 days. However, they can carry out normal activities like attending office, driving, etc.