WILL IT WORK ON CROWNS? HOW LONG DOES IT LAST?
JAY F. asked on Dec 3, 2012
Sorry for the delay! Teeth whitening is not effective for dental work/crowns.
According to the Zoom FAQ, "Whitening treatments help to reduce existing stains, but through consumption of coffee, soft drinks or just through natural aging, your teeth may eventually become discolored again. Maintenance whitening can help combat recurring discoloration."
Brette V. from Groupon replied on Dec 4, 2012