First, track down that tooth! You can actually take it to the dentist and have it reimplanted, provided that you handle your knocked-out tooth somewhat delicately.Once you’ve found the tooth, be careful cleaning it off—it’s best to just gently rinse it with milk or a saline solution so that you don’t accidentally damage it further. Try not to touch the roots.On your way to your emergency dentist appointment, keep the tooth in its original socket, if that’s possible. And if not, a little container of milk is a great tooth receptacle—the milk’s sugars can feed the cells, keeping them alive until they can get reimplanted.If all goes well with the reimplantation, your tooth can be healed in two months.