What should I do for a toothache caused by a cavity?

When experiencing toothache due to dental caries, the following measures can help relieve pain and control the condition: 1. **Medication**: For mild pain, pain relievers such as ibuprofen sustained-release capsules or acetaminophen tablets may be taken under a doctor's guidance. For swollen and painful gums, certain medications such as Niuhuang Jiedu tablets or metronidazole tablets may also be effective. 2. **Cold compress**: Applying a cold pack or a cold towel around the affected tooth can help reduce dental pain and swelling. 3. **Mouth rinsing**: Using mouthwashes such as Kangfuxin liquid or Cipaidu Gum Liquid can help alleviate tooth pain and prevent further progression of dental caries. 4. **Dietary adjustment**: Avoid consuming sweets and cold or raw foods to reduce tooth irritation and prevent worsening of the pain. 5. **Seek medical treatment**: If the pain persists or worsens, seek professional dental care promptly. A dentist may recommend treatments such as root canal therapy, pulpotomy for drainage, or dental fillings to control inflammation, relieve pain, and prevent further deterioration.