Dental Blog
What to know before getting your teeth whitened
A brighter smile can make a big difference to how you feel, and teeth whitening is one of the most popular cosmetic treatments. Before you begin, it helps to know how whitening works and what to expect.
Whitening uses a peroxide based gel to break down the stains that sit in and on the enamel. It lightens the natural colour of your teeth, so results vary from person to person. Stains from tea, coffee, red wine and tobacco usually respond well. Stains caused by certain medicines or by injury to a tooth may respond less.
Whitening only works on natural tooth surfaces. Crowns, veneers and fillings do not change colour, and they could end up looking darker than the teeth around them. Your dentist will also check for cavities and gum disease first, because whitening can be uncomfortable on teeth that need treatment.
- Professional whitening uses a stronger gel, is supervised by your dentist, and protects your gums during the treatment.
- Custom trays made by your dentist let you whiten at home at a gentler pace.
- Shop bought strips and pastes are milder, so results are smaller and take longer.
Some people notice sensitive teeth or mild gum irritation for a day or two. This usually settles by itself. A toothpaste made for sensitive teeth can help, and your dentist can adjust the strength of the treatment if needed.
- Brush twice a day and floss daily.
- Limit dark drinks such as tea, coffee and red wine, and rinse with water after them.
- Avoid smoking and tobacco.
- Book regular cleanings to remove surface stains.
Whitening is not suitable for everyone, including children and women who are pregnant. Speak to your dentist first, so that you can choose the option that is safe for you.
