Toothache half face swelling, consider odontogenic gap infection, may be wisdom teeth pericoronitis, apical periodontitis and other inflammation caused by gap infection, must be actively treated. 1. Wisdom tooth pericoronitis: Wisdom tooth pericoronitis is mainly due to the position of the wisdom tooth is not correct, after eating, resulting in the accumulation of food debris, etc. in the blind pocket caused by bacterial growth, when the acute attack of pericoronitis appear face swelling. Treatment choices are local rinsing and medication, and if the symptoms are severe, intravenous fluids can be chosen to avoid the spread of inflammation. 2. Periapical periodontitis: Periapical periodontitis is mainly caused by tooth decay that is not treated in time, resulting in the decay reaching the nerve or even the root tip of the tooth, causing facial swelling during acute attacks of periapical periodontitis. Timely root canal treatment can reduce the symptoms. Toothache caused by facial swelling, it is best to go to the hospital stomatology examination in a timely manner, choose the most reasonable treatment plan, so as not to delay the condition.