Hi
I have a very big event at the end of June and really want to make my teeth look whiter. I have a crown on the front and am worried about going too white because it would look odd.
I also have sensitive teeth.
I keep seeing these whitening kits advertised (the ones with the LED light) but I am hesitant to trust reviews on their website 
Has anyone any ideas of ways I can whiten my smile in a month that won't cause me pain?
Thanks