The wisdom teeth are the final four teeth to erupt from the gums – usually sometime between age 17 and 25. Ideally, the teeth emerge without complication. But according to the Association of Oral and Maxillofacial Surgeons of India (AOMSI), as many as 9 in 10 Indians have at least one wisdom tooth that is impacted. Even if the teeth all erupt normally, they may cause overcrowding or grow in at an angle that can be problematic in the future. For that reason, many people elect to have their wisdom teeth removed to prevent infection, crowding, and other complications.