What is the direct answer?
A take-home whitening kit uses custom trays and peroxide gel prescribed for your teeth, with instructions for controlled use.
What does this question mean?
A dental team usually examines the teeth and gums, records the starting shade, and makes or selects trays that hold gel against the tooth surfaces. Crowns, fillings, veneers, and other restorations do not whiten in the same way as natural enamel.
What can you do next?
Follow the supplied gel amount, wear time, and schedule, and keep gel off the gums. Stop and contact the dental team if sharp sensitivity, gum burning, or uneven colour develops; do not combine products without guidance.
When should you seek dental care?
Have an examination before whitening if you have untreated decay, cracked teeth, gum inflammation, or unexplained sensitivity. Seek advice during treatment if symptoms persist after the tray is removed or if a restoration becomes visibly mismatched.
What should you ask the dentist?
Ask which stains are likely to respond, whether the trays are custom fitted, how much gel to place, and what to do about sensitivity. Ask whether existing restorations should be replaced later for a matched shade.
Frequently asked questions
Can I use extra gel for faster whitening?
No. Extra gel can spill onto the gums and increase irritation or sensitivity without making the treatment appropriate for your teeth.
Why are my fillings not whitening?
Whitening changes natural tooth structure, while many fillings and crowns retain their original shade.

