What is the direct answer?
Whitening strips do not normally create a crack, but misuse can irritate gums or reveal symptoms from a pre-existing crack.
What does this question mean?
Strips place peroxide gel against enamel to oxidize stain molecules. A crack is structural damage, whereas whitening sensitivity usually reflects irritated dentine or pulp.
What can you do next?
Follow the directions, keep gel off gums, and stop for sharp pain or significant irritation. Have decay, leaking restorations, enamel defects, or cracks assessed first.
When should you seek dental care?
See a dentist for biting pain, a visible crack, lingering sensitivity, swelling, or a broken edge. A sudden fracture needs prompt evaluation.
What should you ask the dentist?
Ask whether the colour is surface stain or internal, whether cracks exist, and how whitening interacts with fillings, crowns, or veneers.
Frequently asked questions
What is the most important thing to know?
Whitening strips do not normally create a crack, but misuse can irritate gums or reveal symptoms from a pre-existing crack.
What should happen next?
Ask whether the colour is surface stain or internal, whether cracks exist, and how whitening interacts with fillings, crowns, or veneers.

