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A wisdom tooth extraction to correct an actual problem or to prevent problems that may occur in the future. When wisdom teeth are erupting, a number of problems can occur:

Your jaw may not be large enough for them, and they may become impacted and unable to erupt correctly through your gums. If your wisdom teeth cannot erupt properly, they can impinge on the adjacent teeth and make it more difficult to clean these teeth. This can sometimes result in interdental decay. One or more of your wisdom teeth may erupt at an awkward angle, with the top of tooth facing forward, backward, or to either side. This will again make cleaning more difficult and if bacteria/food gets trapped in the gums it can lead to pericoronitis, a localised infection in the tissues surrounding the wisdom teeth.

Before removing a wisdom tooth, your dentist will give you a local anaesthetic to numb the area where the tooth will be removed. Sedation can sometimes be used, especially if the patient is nervous or it is anticipated to be a difficult extraction.