Onion seeds for toothache is false. Toothache can be caused by a variety of reasons such as dental caries, periapical periodontitis, wisdom tooth pericoronitis, etc. Toothache should be treated scientifically after the cause is clarified. 1. Toothache can be caused by dental caries, which requires timely resin fillings, etc. If the tooth is deeply decayed, complete root canal treatment is required. If the tooth is deeply decayed, a complete root canal is needed. If the toothache is caused by apical periodontitis, root canal treatment is also needed. 2. Toothache can also be caused by wisdom teeth coronal inflammation, you can use antibiotics, including metronidazole, cefuroxime, etc., pain medication, such as ibuprofen, etc., at the same time need to carry out peri-tubular rinsing, if there are recurrent episodes of wisdom teeth coronal inflammation needs to be removed in a timely manner after the inflammation is under control. If the phenomenon of toothache, you can not use prescription treatment, you should go to the hospital in a timely manner, the use of the above drugs need to follow the doctor’s instructions.