I'm surprised onions are not higher up the list of remedies for tooth ache. I have inflammed tooth nerves which are causing me considerable pain. I've tried most of the top rated remedies but none seem to help. Last night I tried biting on a small piece of white onion and it seemed to work! I would recommend it. I chewed on small pieces and then spat them out. Definitely worth a try if you like raw onion.