Teeth Whitening: What Actually Works

A bright smile can boost your confidence — but with so many whitening trends online, it’s hard to know what truly works and what might harm your teeth.
Let’s break down the safe, dentist-approved methods and what you should avoid.

Why Teeth Look Yellow Over Time

Tooth color changes are completely natural.
Common causes include:

• Coffee, tea, red wine, and certain foods

• Natural aging

• Tobacco use

• Plaque buildup

• Genetics — some enamel is naturally more transparent

You’re not alone — discolouration happens to everyone and doesn’t always mean your teeth are unhealthy.

3 Whitening Methods That Actually Work

1. Professional In-Clinic Whitening

This is the safest and most effective way to achieve visible results fast.

• Uses stronger, professionally supervised whitening agents

• Results are immediate and even

• Perfect before special events or photos

Best for: patients who want fast, controlled, and dramatic results.

2. Dentist-Supervised Take-Home Kits

Custom trays made to fit your teeth ensure comfort and consistent results.

• Gradual whitening over 1–2 weeks

• Less sensitivity than in-clinic whitening

• You control the pace and schedule

Best for: people with sensitive teeth or those who prefer gradual improvement.

3. Whitening Toothpastes

Toothpastes help maintain your results, not replace whitening treatments.

• Polish away mild surface stains

• Support daily upkeep after professional whitening

Best for: maintenance between treatments.

What to Avoid

Some popular DIY methods and “instant” kits can do more harm than good.

Charcoal toothpastes: Abrasive — may wear down enamel

Lemon or baking-soda hacks: Acidic — can erode enamel and cause sensitivity

Unregulated whitening kits: Risk of burns or uneven results

If a product promises “instant whitening at home,” be cautious.

Is Whitening Safe?

Yes — when supervised by a dentist.
Before recommending treatment, your dentist will evaluate:

• Enamel strength

• Sensitivity level

• Gum health

• Type and cause of discoloration

This ensures the process is safe, tailored, and effective for your specific smile.

A Brighter Smile Starts with a Conversation

Every smile is unique — and so should your whitening plan be.
At Clinique Dentaire Port-Royal, we take time to understand your goals and guide you through your options clearly and gently.

Let’s find the safest path to your brightest smile.