But its a tough thing to get rid of..Tetracycline staining goes thru out the entire tooth enamel and the grey color is the most stubborn to reduce. sometimes you can whiten for a long time with trays then do veneers to cover the 4-6 teeth in front that are the worst. Thats really your only options...Dr Thomas
Unfortunately, zoom whitening will not remove tetracycline stains, as the stains are deep in the tooth enamel. These are intrinsic stains. Zoom whitening can't penetrate deep enough into the teeth to remove the staining.