Wounds to the mouth bleed a lot! It's scary, but they usually heal up very fast too. I would get a washcloth with an ice cube inside it and hold him in your lap and apply whatever pressure you can. My son tore his frenulum that little flap that attaches your top lip way up there, and also bopped his top teeth on the jungle gym and his gum was bleeding above his teeth, but they both stopped very quickly, so if he's not stopping, then I'd take him in to ER, but I think if you are able to apply a little cold pressure it should stop pretty quickly unless he's got a clotting issue or something. Best of luck!
at 9:02 AM on Jul. 20, 2010