What is the direct answer?
What does this question mean?
HiSmile is a tooth-whitening product, commonly using peroxide gel in a tray or with an LED device. Whitening changes some natural tooth colour but cannot repair decay or recolour fillings, crowns, veneers, or composite.
What can you do next?
Use only the labelled amount, keep gel off the gums, and stop for burning or marked sensitivity. An examination can find cavities, gum inflammation, exposed dentine, cracks, or restorations before whitening.
When should you seek dental care?
See a dentist before whitening if you have pain, untreated decay, gum disease, enamel defects, or strong sensitivity. Swelling, fever, or trouble swallowing needs urgent care.
What should you ask the dentist?
Ask whether your teeth and gums are suitable for whitening, what concentration and application time fit you, and how restorations will look afterward.
Frequently asked questions
Can this symptom be treated at home?
Home care may ease irritation, but persistent or worsening symptoms need a dental examination.
What will the dentist check?
The dentist will examine the relevant teeth and gums and use tests or imaging when needed to identify the cause.

