Nov 195 min read

How Long Does Teeth Whitening Last?

There's nothing like the boost of confidence that comes with a bright, white smile. If you've just whitened your teeth or you're thinking about it, you're probably wondering how long does teeth whitening last.

The answer to your question depends on a few things, from the type of whitening method you use to your everyday habits. If you continue drinking a lot of coffee, smoking or eating food with a lot of strong dyes, your teeth might go back to being discolored sooner than you thought.

Intrinsic vs. Extrinsic Stains

First thing we need to have a clear understanding of is the type of stain affecting your teeth. This staining can determine the effectiveness of whitening treatments.

There are two types of staining:

Extrinsic Stains: These are surface-level stains caused by dark beverages, foods, and tobacco use. They are easier to remove and respond well to most whitening treatments, from professional procedures to over-the-counter strips.

Intrinsic Stains: These stains are embedded within the tooth, often resulting from trauma, aging, or certain medications like tetracycline. Professional whitening treatments are generally more effective for intrinsic stains as they penetrate deeper.

While some methods can really easily whiten the extrinsic stains, it might be harder to whiten the intrinsic type of stain. It’s best to consult with your nearby dentist on what method of whitening your teeth is best for you.

3 Types of Teeth Whitening Methods

Now that we’ve covered what types of stains are there, we will take a look at the types of teeth whitening methods.

In-office whitening

This method is done by dental professionals and it has the quickest, most noticeable results. It’s perfect if you’re looking for a dramatic difference in a short amount of time, with results that can last up to a year or more with good care.

Over-the-counter products

These include whitening strips, gels, and toothpaste. While more budget-friendly, they tend to be less powerful and are best for touch-ups or minor brightening. They’re ideal if you want to maintain results between professional treatments.

Custom-made whitening trays

These trays are tailored to fit your teeth and provide a balance between professional and at-home treatments. They’re effective and allow you to whiten on your own schedule while achieving longer-lasting results than over-the-counter options.