A couple of questions

Why do whitening strips not cover all teeth?

No, it is not recommended. The strips provided for your upper and lower teeth are designed to fit the front teeth only. Using Crest 3D White Whitestrips on the back teeth may result in the strips coming loose and eventually falling off during the wear period.

How many teeth do Crest White Strips cover?

They cover only six teeth, but 10 show when you smile.

Why do my teeth look more yellow after whitening strips?

“When you're whitening teeth, what you're doing is increasing the porosity of the enamel temporarily (so the whitening agent can reach the discolored molecules in the teeth), so you're actually more likely to stain your teeth again right after whitening,” explained Dr.

What happens if you leave teeth whitening strips on for more than 30 minutes?

Wait at least 30 minutes before applying the strips to avoid gum irritation. Always follow the manufacturer's directions when using whitening products. Leaving them on for too long can cause tooth sensitivity, gum irritation, and tooth damage. Your dentist can recommend the best whitening strips for your situation.

Do you put whitening strips on bottom teeth?

To use teeth whitening strips, first brush your teeth so they're clean when you apply the strips. Wait 30 minutes after brushing so your gums aren't too sensitive. Then, remove the whitening strips from their packaging—there should be one strip for your top teeth and one for your bottom teeth.

Should I brush after whitening strips?

We recommend that with any form of whitening that teeth are brushed beforehand. This is to ensure that any plaque (this sticky surface layer on your teeth) is removed and that any whitening agent present in the strips or gel gets the closest contact with the teeth.

Should I brush my teeth before using Crest whitening strips?

Always brush your teeth before you use whitening strips, otherwise plaque and bacteria will be trapped between the strip and your teeth. This makes it more likely that you will experience tooth decay or other dental problems. … Instead, wait at least half an hour after brushing your teeth to apply whitening strips.

Should I brush my teeth after whitening strips?

We recommend that with any form of whitening that teeth are brushed beforehand. This is to ensure that any plaque (this sticky surface layer on your teeth) is removed and that any whitening agent present in the strips or gel gets the closest contact with the teeth.