I drink a lot of coffee & tea so I finally bought some whitening strips. I am worried about their effects on my crown, but I'm going to try this new brand out anyhow. I put them on and then head out on errands, giving you a little footage of my mouth while in the car. I remove them and brush them, then it's time for a mouth tour! I use a single sided dental spreader to show off the effects. I compare the teeth it was on to the teeth further back, discussing the staining. What do you think? Do you like the effect? Did they do enough?