Third molars are called wisdom teeth because they generally erupt between 17 and 21 years of age, when we reach adulthood. Wisdom teeth that are properly positioned can be a valuable asset to the mouth. Unfortunately, this is often not the case, and problems develop that require their removal. For example, when the jaw is not large enough to accomodate these teeth, they become impacted-unable to move into their proper place. They may grow sideways, emerge only part way from the gum, or remain trapped beneath the gum and bone.
Impaction occurs most often in the third molars of the lower jaw.
After examining your mouth and taking X-rays, your dentist will discuss whether your wisdom teeth should be removed. Extraction of the third molars can protect the overall health of the mouth. This leaves an opening for bacteria to enter around the tooth and cause an infection. Pain, swelling, jaw stiffness, and general illness can result. Impacted wisdom teeth may continue growing without enough room, damaging adjacent teeth.