The wisdom teeth (third molars) can be absent until around 16 to 17 years of age or more.
Their eruption is often difficult because of their inclination and/or lack of space. The gum surrounding them can become infected and cause a pericoronitis.
This is an emergency situation and it is necessary to consult a dentist or oral surgeon who will evaluate the clinical and radiological elements, and decide whether the tooth can be conserved or must be extracted. If they need to be extracted, this is usually done at two separate appointments, 2 to 3 months apart.