Wisdom teeth (3rd Molar) that needs to be extracted are those which are trapped under jaw-bone or misaligned or very importantly, the teeth that keeps on cutting soft tissue for long time. Sometimes it could contribute to serious problem like cancer & other problems like cyst formation, gum problem.
So it is necessary to take expert opinion.
Removal of wisdom tooth is minor surgical procedure and we take utmost care that you don’t have pain during & after procedure.