When eating a mouth full of toothache jaw pain is considered to be the emergence of oral ulcers, periodontitis and other diseases. 1. Mouth ulcers, patients with mouth ulcers, the oral mucosa may be stimulated during meals, which may lead to mucosal damage, ulcer symptoms worsened, so there may be a mouth full of toothache and jaw pain symptoms. 2. Periodontitis, patients with periodontitis gum area congestion and edema, may lead to teeth chewing function is affected, so this symptom may occur. If there are obvious pain symptoms, it is recommended to actively seek medical examination to determine whether the disease. Also need to pay attention to personal oral hygiene, light diet.