Wheatgrass and Your Teeth

I just read an article saying that making wheatgrass juice and gargling it will relieve a toothache. I've never tried it, mostly because I never get toothaches, but if I did,I would surely give it a go. I'm not sure how this is supposed to work, but if anybody out there can vouch for it, let me know. Here is the article: http://keralaonline.com/life-style/sore-tooth-remedy_41827.html