Pro sys whitening strips
Whitening strips use a peroxide gel held against the front tooth surfaces; their results and irritation risk depend on fit, concentration, and contact tim
The short answer
Whitening strips use a peroxide gel held against the front tooth surfaces; their results and irritation risk depend on fit, concentration, and contact time.

What is the direct answer?
What does this question mean?
A strip is a thin flexible carrier coated with bleaching gel. The peroxide diffuses into enamel and dentin and changes colored molecules, but it cannot lighten fillings or crowns.
What can you do next?
Follow the product directions, keep the strip off the gums, and do not combine it with other whitening products without advice. Brush gently and pause if sensitivity or gum irritation develops.
When should you seek dental care?
Seek dental care for sharp persistent pain, gum whitening or soreness, cavities, cracks, or uneven darkening. A clinician should assess one dark tooth before home bleaching.
What should you ask the dentist?
Ask whether the discoloration is suitable for peroxide, how restorations will match, and what desensitizing plan is available.
Frequently asked questions
Could this have more than one cause?
The peroxide diffuses into enamel and dentin and changes colored molecules, but it cannot lighten fillings or crowns.
Can home care replace an examination?
Brush gently and pause if sensitivity or gum irritation develops.
