What are some useful remedies, homemade or otherwise, for toothache pain?

Options. Try otc pain medications like tylenol, (acetaminophen) motrin/aleeve/ibuprofen. Oragel also very effective for tooth ache. Best to do is to see a dentist to find out the cause of the tooth ache instead of just covering it up with pain medications. Salt warm water can also sooth the gum.
Remedy. A remedy is something that cures or relieves a disease or bodily disorder; a healing medicine, application, or treatment. Other than OTC pain meds, there are no DIY treatments to replace proper dental care. Please call a dentist for an appointment. In addition, the pain meds do not solve your problem, they just prolong your agony.
See your dentist. I'm sorry, but most home remedies are not very effective for a tooth ache. You need to see your dentist for a diagnosis and appropriate treatment. Go soon, as it will only get worse, be more complicated, and get more expensive. Don't forget that your oral health is important to your overall health.
Dentist. DIY (do it yourself) "remedies" for tooth aches are just patches for proper treatment. You need to have the source treated, not the symptoms. You could also have infection in the tooth or gum tissue or both. See a dentist asap.