DENTAL BLOG
Teeth Whitening: Facts and Fallacies
Teeth whitening is one of the most popular cosmetic dental treatments, but misinformation abounds. Understanding the facts can help you make informed decisions about whitening your smile safely and effectively.
The Science of Tooth Color:
Tooth color is determined by both the enamel (outer layer) and dentin (inner layer). Over time, both can become discolored due to:
• Extrinsic Stains: Surface stains from coffee, tea, wine, tobacco, and certain foods
• Intrinsic Stains: Internal discoloration from aging, medications, trauma, or excessive fluoride
• Thinning Enamel: As enamel wears, more yellow dentin shows through
Professional Whitening Options:
• In-Office Whitening:
- Uses high-concentration peroxide gels (15-40%)
- Results visible in 1-2 hours
- Can lighten teeth 3-8 shades
- Professional supervision ensures safety
• Take-Home Trays:
- Custom-fitted trays with lower-concentration gel (10-22%)
- Worn 30 minutes to 2 hours daily for 1-2 weeks
- Gradual, controlled whitening
- More cost-effective for maintenance
Common Myths Debunked:
• Myth: "Whitening damages teeth"
Fact: Professional whitening is safe when done correctly. Temporary sensitivity is normal and resolves quickly.
• Myth: "All whitening is the same"
Fact: Professional treatments are more effective and safer than over-the-counter products.
• Myth: "Whitening works on all teeth"
Fact: Crowns, fillings, and veneers don't whiten. Natural teeth may whiten at different rates.
• Myth: "More is better"
Fact: Over-whitening can cause sensitivity and unnatural appearance. Follow professional recommendations.
Over-the-Counter Products:
• Whitening Toothpastes: Remove surface stains but don't change tooth color significantly
• Whitening Strips: Can be effective but may cause uneven results and gum irritation
• Whitening Pens: Convenient but limited effectiveness
• Charcoal Products: No proven whitening benefit and may be abrasive
Who Should Avoid Whitening:
• Pregnant or Nursing Women: Safety not established
• Children Under 16: Tooth development still occurring
• Severe Sensitivity: May worsen existing sensitivity
• Gum Disease: Should be treated before whitening
• Cracked Teeth: Whitening agents may cause pain
Maintaining Your Results:
• Avoid Staining Foods: Limit coffee, tea, wine, and dark berries
• Use a Straw: For beverages that stain
• Rinse After Eating: Swish water after consuming staining foods
• Regular Cleanings: Professional cleanings remove surface stains
• Touch-Up Treatments: Periodic whitening maintains results
What to Expect:
• Temporary Sensitivity: Normal and usually resolves within 24-48 hours
• Gum Irritation: Usually mild and temporary
• Uneven Results: Some teeth may whiten faster than others
• Results Duration: 6 months to 2 years, depending on habits
Professional whitening is the safest and most effective way to brighten your smile. We can help you choose the best option based on your goals, budget, and lifestyle.