​A Patient's Quick Guide to Teeth Whitening

 

We want to help you make informed choices about your dental care. Over time, things like coffee, smoking, or aging can naturally stain your teeth. While routine brushing keeps your mouth healthy, teeth whitening can safely lift these deeper stains to reveal a brighter shade.

 

Because every smile is unique, a successful whitening treatment depends on your dental history and whether your teeth are naturally "alive" or have had previous treatments like root canals. It is also important to know that whitening treatments only work on natural teeth – they will not change the colour of existing fillings, crowns, or veneers. In British Columbia, professional whitening is carefully regulated and can only be provided or supervised by a licensed dental team to ensure your gums and enamel stay protected.

 

Here is a quick look at the three primary professional whitening options available to help you achieve your goals safely:

 

1. Walking Bleach (Internal Whitening)

• The Lowdown: A specialized, highly targeted technique used to whiten a single tooth from the inside out.

• The Pros: Remarkably effective and minimally invasive. It saves you from needing to grind down the tooth for a crown or veneer just to fix its colour. Because it is done in stages, it is completely painless and highly cost-effective.

• The Cons: It cannot be used on healthy, "live" teeth, nor is it meant for whitening your whole smile at once.

• Best Used For: A single front tooth that has turned dark or grey following a past injury, trauma, or a root canal treatment.

 

2. Professional At-Home Trays (Dentist-Supervised Kits)

• The Lowdown: Custom-fitted plastic trays made from a mold of your mouth, which you fill with a mild professional-grade whitening gel and wear at home on your own schedule.

• The Pros: Highly convenient, flexible, and comfortable. Because the gel works gradually, it causes significantly less temporary tooth sensitivity than rapid in-office procedures. The custom fit ensures the gel stays on your teeth and away from your gums.

• The Cons: Requires patience and consistency. You will need to wear the trays daily for one to four weeks to see dramatic, long-lasting results.

• Best Used For: Safe, steady, and uniform brightening of your entire smile.

 

3. Chairside Whitening (In-Office Bleaching)

• The Lowdown: A fast-acting treatment performed entirely in the dental chair using high-concentration whitening agents, sometimes accelerated by a specialized light or laser.

• The Pros: Provides immediate, dramatic results. Your teeth can become several shades brighter in a single 1-to-2-hour appointment, making it perfect if you are short on time.

• The Cons: It is the most expensive option and carries a high temporary sensitivity risk. A majority of patients experience sharp or lingering tooth sensitivity for a few days afterward. Additionally, the instant results do not necessarily last longer than gradual home trays.

• Best Used For: Patients looking for rapid, maximum whitening right before a major event (like a wedding or graduation).

 

A Note on Store-Bought (Over-the-Counter) Kits

While cheap, self-bought whitening kits or online products may seem tempting, they come with hidden risks. Without a custom tray or professional supervision, whitening gel easily leaks out, which can cause chemical burns to your gums and uneven, patchy results.

 

Furthermore, certain complex stains – such as deep bands caused by childhood medications (like tetracycline) or white spots from excess fluoride – will not respond well to regular bleaching and require alternative treatments like microabrasion or porcelain veneers.

 

Every mouth is different! We will work closely with you during your visit to evaluate your stains, review your dental work, and select the safest, most comfortable whitening method for your lifestyle and budget.

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For More Information

If you have questions or concerns about tooth whitening, please contact us!