What is the root cause?

The symptoms of posterior alveolar swelling are considered to be an inflammatory reaction. The most common is pulp necrosis caused by tooth decay factors, which can cause periapical abscess and is easy to repeat. In addition, it does not rule out the factors of long wisdom teeth, and there are reasons for impaction. It is difficult to clean because of local hygiene, and it is easy to breed bacteria. When the body resistance is low, it is easy to induce repeated episodes of pericoronitis, causing swelling and pain. For the elderly most common is due to chronic periodontitis, acute suppurative attacks, but also cause local swelling symptoms. Specific reasons, you can go to the hospital's oral examination, differential diagnosis, targeted treatment.