Erupted Wisdom Teeth
Erupted wisdom teeth may also need to be removed. The dentist may recommend this if the tooth is non-functional, interfering with the bite, badly decayed, involved with or at risk for periodontal disease, or interfering with restoration of an adjacent tooth. Once again, every case is different and only your dentist can determine if there ia a reason to have a tooth removed.
Source: Academy of General Dentistry