10% carbamide peroxide in a custom-fitted tray for 2-6 weeks will yield the above results

Yellow teeth respond very nicely to 10% carbamide peroxide

Single dark tooth from trauma, but which has not had a root canal, will also respond in 4-6 weeks

Nicotine stains may take as long as 1-3 months of nightly treatment to resolve

Nicotine stains from this 20 years of pipe smoking took two months of nightly bleaching with 10% CP to remove.

Tetracycline stains handled by NGVB give the above results.