Rinse with warm salty water, then diluted TCP (but don't go out for about an hour cause you smell like a medical centre) take 2 co-codamol, co-dydramol or paracetamol, have a bottle of wine/vodka or beverage of your choice, top up any of the above as and when needed, repeat constantly until you see the dentist.
I've a wisdom tooth which still hasn't come through and it gives me major grief from time to time, this treatment has been tried and tested by me. Not tested on animals, and no rats or monkeys were harmed in finding the above treatment.