A tooth abscess isn’t pretty. When it's contained, it's a white lump covered with stretched tissues, and when it's punctured, it gets even uglier -- revealing that it's nothing more than a sac of pus. At the microscopic level it's even more startling: There are bacteria everywhere, and lots of formerly healthy cells lying dead in the wake of infection. Add pain into the mix of blood and pus and ... OK, that's probably enough. If you have a sharp, deep toothache or throbbing mouth pain, could it be an abscess? Take our quiz to find out.