Eating toothache may have the following causes: 1. deep caries, when the teeth appear deep caries, there may cause food embedding in the process of eating, then there will be tooth pain, there may also be pressure on the gums, causing gum pain. 2. eating toothache may be a symptom of leaky nerve, when there is pulpitis, there will also be persistent pain. 3. eating toothache may be The tooth is prone to pain when biting due to periapical inflammation, usually a burst of pain, which usually requires root canal treatment. 4. Eating toothache may also be due to swelling of the gums, which is prone to pressure on the gums to produce ulcers when eating, which can also be painful. In addition, if you have a toothache from eating, you may also have an abscess in your gums, so you may experience pain when there is slight pressure.