Three reasons why wisdom teeth need to go-

­1) impaction - coming in at a funny angle or in an unexpected location. This poor positioning can cause pain and infection and would require extraction

2) Difficult to clean- As a result, can decay and infect nearby teeth and require extraction again;

3) Crowding adjacent teeth- undoing years of straight alignments created by braces.

For these reasons, dentists usually recommend removing wisdom teeth in young adults, before the teeth complicate treatments and extraction.