Wisdom teeth are the third molars, which are prone to obstruction or the possibility of blind pockets, and are prone to the retention of food debris, leading to pericoronitis, which manifests as swelling and pain in the posterior area of the molar and even causes swelling of the jaw and face. It is common in people aged 18 to 35. 1, If the swelling and pain are obvious, the first step is to control the infection, usually by localized rinsing with 3% hydrogen peroxide solution and saline in conjunction with oral or IV anti-inflammatory medication at the dentistry department.