not a problem. the ones that are too big to be fixed will not run through your die properly and you will know and be able to throw them out. the ones with little dents will either fix themselves in the dies or they will be fireformed when you shoot them the first time. i have had brass with small dents and dings and when i eject them after firing those are "Steamed out" by being expanded against the chamber wall.
unless you're talking about big creases or cracks or splits you're good to go. if you're worried still, post a pic of a few of them for us.
-Matt