Actually, evolution has shortened the lower jaw, thereby making wisdom teeth
(or the third
molar) obsolete. Many people today are born without them at all. Those of us that have them, if they are crooked or impacted, it's recommended for removal. They can have a direct relationship to the alignment of your other teeth if they have no room to erupt. Not to mention the possibility of jaw bone problems with a tooth trying to erupt directly into it.