Wisdom teeth (or third molars), are the final teeth to develop. Most of us
have four wisdom teeth, one in each corner of the mouth. They usually emerge during our
late teens or early twenties.
Occasionally, wisdom teeth become entrapped or impacted in
the jawbone and cause crowding , displacement, decay, infection or gum disease. Impacted
wisdom teeth can grow in many different directions -- horizontally, vertically, or at an
angle.