Sea salt water helps to cleanse the mouth of any potentially harmful substances that might be in or around the affected tooth area. To help lessen the pain of a toothache, mix sea salt and small amount of warm water and swish it around in your mouth for about 30 seconds before spitting it out. Do this once or twice, several times a day for best results.
Onions offer antiseptic and antimicrobial properties that are known to kill the dangerous pain causing substances in the mouth. Placing a piece of raw onion over the painful area in the mouth is known to be very effective in treating toothaches.