Eat metronidazole teeth more pain, that taking metronidazole is not symptomatic, need to be based on the cause of the appropriate treatment, common causes of toothache, including dental caries, pulpitis, apical periodontitis, periodontitis, etc., the treatment is mainly root canal treatment, dental filling treatment, periodontal treatment, medication and so on. 1. Dental caries, pulpitis, apical periodontitis: toothache caused by dental caries is mainly due to deeper caries damage, resulting in pulpitis. The main treatment for pulpitis and periapical inflammation is root canal treatment, also known as endodontic treatment, and the last step of root canal treatment is tooth filling treatment. 2. Periodontitis: Toothache caused by periodontitis requires systemic treatment of the periodontium, including supragingival cleaning and subgingival scraping. Metronidazole is mainly used for anaerobic infections, for other types of bacterial infections, the control effect is not good, if necessary, under the guidance of the doctor with the use of broad-spectrum antibiotics, such as cephalosporin. When a toothache occurs, you can’t blindly use drugs on your own, and it is recommended to consult a doctor in time to receive appropriate treatment under the guidance of a professional doctor.