Wisdom teeth otherwise known as third molars are the very last teeth in your mouth to develop. The third molars are located behind the second molar teeth and complete development around the age of skeletal maturity: about 16 years for females, and around 18 for males.
Unfortunately, most people do not have room in their mouth for all 32 teeth.
Wisdom teeth that are fully erupted and used for chewing do not need to be removed. Some of the reasons wisdom teeth are removed are listed here:
It is very difficult to keep these teeth from developing cavities and almost impossible to "fill" those cavities.
Eventually the tissue around the wisdom teeth becomes either infected or there is periodontal bone loss.
Malposed wisdom teeth can directly harm the adjacent teeth by continued pressure.
The best time to remove impacted third molars is before the roots are fully developed. This is usually between the ages of 16 and 20. Shorter roots mean less surgery is required to remove the teeth and minimizes complications. Younger patients also heal much more rapidly than older patients.
Impacted third molars are teeth that are prevented from erupting into the mouth by either lack of space (large teeth/small jaw), malposition of the tooth, or malformation of the third molar.