Mix 1/2 teaspoon salt into 8 ounces of water, swish around your mouth for 30 seconds to one minute, and then spit it out. Webhome remedies can offer some mild toothache relief. But if you have tooth pain that doesn’t go away, you’ll need to see a dentist for treatment. If you have mild pain, there are a few. Webyou’ve got a toothache. See your dentist asap. Until you can get to the dentist,. Webonions are antibacterial and antiseptic, making them an excellent remedy for toothache. One of the many toothache home remedies that might give pain relief by destroying.