Third molar Impaction

In dental terminology an "impacted" tooth refers to a tooth that has failed to emerge fully into its expected position. This failure to erupt properly might occur because there is not enough room in the person's jaw to accommodate the tooth, or because the angulation of the tooth is improper.

The precise reasons why an individual's wisdom teeth might need to be extracted should be explained to them by a dental surgeon, after an examination which almost certainly will need to include dental x-rays.