I did the same stupid thing couple of years ago. Mine was on the front crown, slight dent. Its superficial. If yours is on the front toe plate there might be a chance, but not sure. It'll cost a pretty penny. If it still works okay, use it as motivation to get to a new driver. Do a search on this discussion on the titleist home page and I think the discussions will pop up. You and I are not the only ones who did this.

good luck

The only real way to tell if a dented driver has an affect is to actually feel it. Sometimes it doesn't do anything and other times it does. If you can't tell, you can always ask another player what the driver feels like. Chances are it'll only take a few swings to figure it out.

Might want to have it checked out by a Titleist certified repairman to ensure that it has not been cracked. If it is cracked, it is fodder. He should be able to advise you otherwise. Sorry.