There are certain situations in which your dentist must perform a tooth extraction to maintain your dental health. This typically only happens when the tooth is damaged beyond repair, or if it is having a negative impact on the health of the rest of your teeth.
An impacted tooth essentially means that it is blocked, stuck, or unable to fully erupt and function properly. Third molars (wisdom teeth) most commonly fall victim to impaction, but the upper canine is the second most common tooth to become impacted.
Causes of Impacted Teeth
- Extra Teeth – If extra teeth are present, the natural eruption of the canine teeth may be inhibited. The eruption progress of the canine may be directly blocked by an extra tooth or the subsequent overcrowding might leave no room on the dental arch for the canine.
- Overcrowding – In some cases, poor alignment of the front teeth can lead to overcrowding. The existing teeth compete for space which means that the canines do not have sufficient room to become functional.
- Unusual Growths – On rare occasions, unusual growths on the soft tissue of the gums can restrict the progress of canine teeth, which leads to later impaction.
Third molars, commonly referred to as wisdom teeth, are usually the last four of 32 teeth to erupt (surface) in the mouth, generally making their appearance between the ages of 17 to 25. They are located at the back of the mouth (top and bottom), near the entrance to the throat.
In most cases, inadequate space in the mouth does not allow the wisdom teeth to erupt properly and become fully functional. When this happens, the tooth can become impacted (stuck) in an undesirable or potentially harmful position.
Reasons to Remove Wisdom Teeth
Wisdom teeth extractions are most often performed because of an active problem such as pain, swelling, decay or infection, or as a preventative measure to avoid serious problems in the future. If impaction of one or more wisdom teeth is present, and left untreated, a number of potentially harmful outcomes can occur, including:
- Damage to nearby teeth: Second molars (the teeth directly in front of the wisdom teeth) can be adversely affected by impacted wisdom teeth, resulting in tooth decay (cavities), periodontal disease (gum disease) and possible bone loss.
- Disease: Although uncommon, cysts and tumors can occur in the areas surrounding impacted wisdom teeth.
- Infection: Bacteria and food can become trapped under the gum tissue, resulting in an infection. The infection can cause considerable pain and danger.
- Tooth Crowding: It has been theorized that impacted wisdom teeth may cause other teeth to become misaligned (crowded or twisted).