Do you know how many teeth adults have? 32. What about baby teeth? If you said 20, boom, you won again. And for our final round, what is the name of the condition when you have too many teeth? That is called hyperdontia. We would've also accepted supernumerary teeth. While we aren't handing out any trivia points, we can point out all of the ins and outs of hyperdontia — and that wealth of dental health knowledge is a prize in itself.