When your kid or you have a toothache, try this and let us know how it goes.
Get some corn cobs (without the kernels – don’t waste the kernels though). Cut them into several pieces and boil them in water. When the water level gets low, pour more water into the pot. Basically, you are trying to get pretty strong corn cob tea.
Then cool down and gargle your mouth with the corn cob extract 15 to 20 times. For severe toothache, do this for a few days.
Let us know if this works.