For toothache, try ice water to temporarily relieve the pain, but not for dentin hypersensitivity pain, which may be aggravated by pain relief medication such as ibuprofen. However, pain relief is not a complete treatment for toothache. It is recommended to seek timely medical advice to understand the cause of toothache and provide targeted treatment, such as plaque cleaning, filling and root canal treatment according to the degree of caries caused by pain.