If you have a confident read on an overpair its probably better to wait till the turn to whack it cos you won't lose the pot when scare cards come.

If you're not sure and might have to come if a 10 comes, or a flush comes, then you should prolly 3 bet the flop and get your money in when you know your hands good. OR at least thats how i see things. How about check raising this turn?