There are four wisdom teeth out of our total thirty-two teeth. The size of wisdom teeth is larger than the rest of the teeth and infection or decay of wisdom teeth is often painful. Your dentist will only ever recommend the extraction of your wisdom teeth if the teeth show no potential in erupting from the gum area, as this could lead to Pericoronitis, a particular bacterial infection associated with wisdom teeth. Severe decay has rendered the tooth invalid, requiring immediate removal.