Teeth Whitening

Professional teeth whitening is one of the most popular cosmetic dental treatments, capable of dramatically brightening your smile in a short time. Understanding your options helps you choose the most effective method for your needs and budget.

Professional In-Office Whitening

In-office treatments use high-concentration bleaching agents (25-40% hydrogen peroxide) under professional supervision, delivering immediate results. The procedure typically takes 60-90 minutes and can lighten teeth 3-8 shades in a single visit.

The Procedure

Your dentist applies a protective barrier to your gums, then carefully coats your teeth with whitening gel. Many treatments use LED or laser light to activate the gel and accelerate whitening. You may experience some sensitivity during or after treatment, but this is usually temporary.

Cost: £300-£800

At-Home Professional Kits

Your dentist provides custom-fitted trays and professional-grade whitening gel for home use. You wear the trays for specified periods (30 minutes to overnight) over 1-2 weeks, achieving gradual but impressive results (2-6 shades lighter).

Advantages

• Convenience of home treatment
• Professional-grade results
• Custom trays ensure even coverage
• Less sensitivity than in-office treatments
• Can be repeated for touch-ups

Cost: £200-£400

Over-the-Counter Options

Whitening Strips

Thin, flexible strips coated with peroxide gel that you apply for 30 minutes daily. Results appear in 2 weeks (1-3 shades lighter). Cost: £20-£50

Whitening Toothpastes

Contain mild abrasives and chemical agents to remove surface stains. Best for maintaining whiteness rather than dramatic change. Cost: £5-£15

Whitening Gels and Pens

Brush-on gels offer convenience but minimal results (1-2 shades). Good for touch-ups between professional treatments. Cost: £10-£30

Factors Affecting Results

• Starting shade: Yellow-toned teeth respond better than gray-toned teeth
• Stain type: Extrinsic stains (coffee, tea, wine) whiten better than intrinsic stains
• Age: Younger teeth typically respond better
• Enamel thickness: Thicker enamel whitens more effectively

Safety Considerations

Professional whitening is safe when performed correctly. Potential side effects include:

• Temporary tooth sensitivity
• Gum irritation
• Uneven results

Whitening only works on natural teeth and won't change the color of crowns, veneers, or fillings. Pregnant or nursing women, people with gum disease, or those with worn enamel should consult their dentist before whitening.

Maintaining Your Results

• Practice excellent oral hygiene
• Limit staining foods and beverages
• Drink staining beverages through a straw
• Rinse or brush after consuming staining substances
• Don't smoke
• Schedule regular professional cleanings
• Use whitening toothpaste weekly for maintenance

Results typically last 1-3 years, depending on your habits. Touch-up treatments can easily refresh your smile as needed.