Wisdom teeth can be "impacted"Impacted is the term used when your wisdom teeth have no room to grow into your mouth naturally. The tooth may also be crooked, or in some cases, positioned horizontally, which all results in the need for removal.
Not addressing partially impacted wisdom teeth can cause crowding of other teeth, which could cause pain, and possibly damage adjacent teeth. You might also incur infection. Larger problems could arise from ignoring fully impacted teeth, such as cyst, which could adversely affect adjacent teeth, the jaw, and nerves, and eventually, could result in the formation of a tumor.
All of this is extremely avoidable if the situation is attended to in a timely manner. Issues can usually be determined by age 16 or 17.