Teeth whitening has become an increasingly popular cosmetic treatment, with many patients asking about it during dental visits. If you’re considering getting your teeth whitened, here are 5 key facts you should know first:
1. What Causes Teeth Discoloration
There are several reasons teeth may become discolored over time, including:
- Consumption of foods and drinks like coffee, tea, red wine, etc. These contain pigments that can attach to tooth enamel
- Tar and nicotine from tobacco use causes brown and yellow stains
- Thinning tooth enamel as we age allows more yellowish dentin to show through
- Certain medications like antihistamines, antibiotics, blood pressure meds, or chemotherapy
2. How Teeth Whitening Works
Teeth whitening is essentially a bleaching process using hydrogen peroxide or carbamide peroxide. An oxidation reaction breaks down staining agents on and inside the teeth.
3. Whitening Options and Effectiveness
- Professional in-office whitening is fastest and most effective, using higher peroxide concentrations under supervision. Can lighten up to 10 shades in under 90 minutes.
- At-home trays with whitening gel, worn 30 mins to overnight for a few weeks. More effective than strips or toothpaste but less than in-office.
- Whitening strips worn twice a week for 2 weeks. Cheaper but less effective alternative.
- Whitening toothpastes and mouthwashes. Remove some surface stains but don’t change tooth color much.
4. Whitening Doesn’t Work on All Teeth
Teeth that are yellow tend to bleach well, while brown, gray or purple hues may not respond much or at all. Whitening also won’t affect crowns, veneers, fillings or caps.
5. Possible Side Effects
Tooth sensitivity is the most common side effect as whitening agents can irritate the tooth nerve. Usually short-term and resolves on its own. Overuse of products can damage gums and enamel.
Always consult your dentist before undergoing any whitening procedures to see if it’s suitable for your specific tooth situation. They can advise on options and what results to expect.