1. Salt - You don't get any more "common" than salt. A good salt water mouthwash helps get rid of tooth infection and can help to cure a toothache. A thorough rinsing of the mouth with salt water is important at all times and should be a regular part of your oral health routine.
2. Hot Pepper Powder - Adding a pinch of hot pepper powder to the salt is also a good idea -- if you can stand the heat. Pepper powder can have a nice numbing effect when you rub it on your gums.
3. Garlic - Placing a clove of garlic with a pinch of salt on the affected tooth helps relieve the pain. Garlic has antibacterial properties that kill the germs in the mouth.
4. Onions - Exactly the same use and effect as garlic.
5. Lime Juice - Lime Juice is a rich source of vitamin C and can help prevents tooth decay and also provides toothache pain relief.