Teeth whitening is a treatment that helps make your smile brighter. Many people use it to look better or feel more confident. But how long does teeth whitening last?
In this article, we will answer that question. We will also talk about how safe teeth whitening is and give you some tips on how to keep your smile bright.
Let’s get started!
What Causes Teeth To Stain?
Before we talk about how long teeth whitening lasts, it’s important to know what causes stains on your teeth. There are a few things that can make your teeth stained, and knowing these can help you stop them from happening.
Surface Stains
Surface stains are the most common type of stains. They happen when foods and drinks like coffee, tea, red wine, and berries stick to your teeth. These foods have pigments that can stick to the outer layer of your teeth.
Deep Stains
Deep stains are harder to remove because they go beneath the outer layer of your teeth into the second layer, called dentin. Smoking and some medicines can cause these stains.
Also, as you get older, your teeth may get deeper stains because the outer layer of your teeth becomes thinner.
Genetics
Your genes can also affect how your teeth look. Some people have thinner enamel or teeth that stain more easily. Others may naturally have whiter teeth.
Poor Oral Hygiene
Not brushing and flossing your teeth can also cause stains. If you don’t clean your teeth well, plaque can build up, which leads to stains. Keeping good oral hygiene helps stop stains and keeps your teeth looking great.
Different Teeth Whitening Methods
There are different ways to whiten teeth. Each method has its good and bad sides. Let’s look at some of the most popular options.
In-Chair Teeth Whitening
In-chair whitening is a treatment done at your dentist’s office. It uses a stronger bleaching agent, like hydrogen peroxide or carbamide peroxide, and may also use a laser to speed up the whitening. This method is what we call laser teeth whitening procedures.
This method gives quick, big results that can last for years if you take good care of your teeth.
At-Home Whitening Products
At-home whitening kits usually come with trays that you fill with a teeth-whitening gel. You wear them for a set amount of time each day. These products slowly whiten your teeth over a few days or weeks.
Over-The-Counter Whitening Products
Over-the-counter products include things like whitening strips and toothpaste. These products have bleaching agents that you can put right on your teeth. They may be abrasive and not give as fast or strong results as professional treatments.
How Long Does Teeth Whitening Last?
Teeth whitening can make your smile more radiant, but how long does it last? It depends on things like the type of treatment you use, your lifestyle, and how well you take care of your teeth.
In-chair whitening done by a dental professional can last between 1 and 3 years. This depends on how well you care for your teeth and your lifestyle.
Here’s why:
Stronger Whitening Agents: Professional whitening treatments use stronger products like hydrogen peroxide. These help give better and longer-lasting results.
At-home whitening treatments are less expensive but don’t last as long. They usually last between 3 and 6 months. How long the results last depends on how often you use them and your lifestyle.
Whitening Toothpaste And Whitening Strips
Whitening toothpaste has mild scrubs that can clean surface stains but won’t bleach your teeth. It can help keep your teeth looking white but doesn’t give long-lasting results by itself.
Whitening strips and gels can help make your teeth lighter over time, but they may not make your teeth as white as professional treatments.
Elements That Affect How Long Teeth Whitening Lasts
Here are a few things that can affect how long your teeth whitening lasts:
Diet And Lifestyle: Foods and drinks like coffee, tea, red wine, and berries can make the whitening wear off faster. Smoking can also make your teeth stain quicker.
Oral Hygiene: Brushing your teeth, flossing, and using mouthwash can help keep your teeth white longer. Taking care of your teeth helps your whitening last.
Genetics And Age: Some people naturally have whiter teeth. As you get older, your teeth may become a bit yellow. Your genes can also affect how well your teeth whiten.
Is Teeth Whitening Bad For Your Teeth?
Many people wonder if teeth whitening is bad for their teeth. The good news is that teeth whitening is usually okay when done the right way.
Whether done by a dentist or using approved products, it’s generally great.
Precision Of Professional Teeth Whitening
When a dentist does your whitening, they use specific tools to make sure it’s done correctly. They use whitening agents, like hydrogen peroxide and carbamide peroxide, carefully. This way, your teeth and gums are protected.
Risks Of Overusing Whitening Products
It’s very important to be careful when using teeth whitening products. While they can help make your smile brighter, using them too often can cause some problems.
If you use whitening products too much, your teeth can become sensitive. This means your teeth might hurt when you eat or drink something hot or cold.
Overuse can also harm the enamel on your teeth. When you use whitening products too much, the enamel can become thinner. Thinner enamel can make your teeth feel sore and make them more likely to get cavities or damage.
That’s why it’s so important to follow the directions on any whitening product. This will ensure that your teeth stay healthy and white without causing harm.
If you ever feel discomfort or pain while using a whitening product, stop using it immediately and talk to your dentist. They can help you find the best way to whiten your teeth.
Protecting Your Gums
Sometimes, whitening products touch your gums, causing irritation. This happens because whitening products are meant to stay on your teeth, not on the soft parts of your mouth.
But don’t worry—dentists take extra steps to protect your gums.
When you get a professional whitening treatment, a barrier might be used to keep your gums safe. This way, only your teeth are exposed to the whitening product, and your gums stay protected.
How To Maintain Your Whiter Teeth
Once your teeth look bright and white, you’ll want to keep them that way! Here are some easy tips to help you maintain your whiter smile and keep your teeth looking their best:
Practise Good Oral Hygiene
Brushing your teeth twice a day with fluoride toothpaste is really important. This helps to keep your teeth white and clean.
Don’t forget to floss between your teeth every day, too. Flossing helps remove bits of food and plaque that can build up.
Also, using mouthwash is a great idea! It helps kill bacteria and stops plaque from building up, keeping your smile fresh.
Avoid Staining Foods And Drinks
Some foods and drinks can stain your teeth, like coffee, tea, and red wine. Even though it might be hard to avoid these completely, try not to drink or eat them too often.
If you do have something that can stain your teeth, rinse your mouth with water right after. This can help wash away the stain-causing bits before they set on your teeth.
Use Teeth Whitening Products
To keep your smile bright, you can use whitening toothpaste or mouthwash. These products help remove small stains and keep teeth looking fresh.
Using them will help maintain your bright smile between professional teeth whitening treatments. They’re an easy way to make sure your teeth stay looking their best!
Frequently Asked Questions
How often can I whiten my teeth?
You shouldn’t whiten your teeth too often. Ask your dentist how often you should come in for whitening touch-ups. For at-home products, use them a few times a year to keep your teeth bright.
Can I use whitening toothpaste every day?
Yes! Whitening toothpaste is okay to use every day. It helps keep your teeth clean and bright, but it’s not as strong as a professional treatment. It’s a good way to keep your smile looking fresh.
Will teeth whitening work on all teeth?
Teeth whitening works best on natural teeth. It may not work on dental work like crowns or veneers. If you’re unsure about your teeth, talk to your dentist for advice.
How soon will I see the results from teeth whitening?
If you’re using at-home whitening products, you might see results in a few weeks. Professional treatments can show results after just one visit.
Is there any risk with whitening my teeth during pregnancy?
It’s best to wait to whiten your teeth during pregnancy or breastfeeding. There’s not enough research about how whitening affects you during this time. Always talk to your dentist first.
Can teeth whitening remove all stains?
Teeth whitening can remove stains from food, drinks, and smoking. But it may not work on stains from medicine or injuries. Your dentist can help if you have tough stains.
Can I get teeth whitening if I have cavities or gum disease?
You should manage any cavities or gum disease before whitening your teeth. Whitening can make your teeth more sensitive if they aren’t healthy. Talk to your dentist to make sure your teeth and gums are ready.
Can I combine teeth whitening with other dental treatments?
Yes, if you whiten first, you can combine whitening with other treatments like fillings or crowns. Ask your dentist what’s best for you.
Are there any natural alternatives to professional whitening?
Some people use baking soda or activated charcoal to whiten their teeth. However, these products are not as effective as professional treatments and can be abrasive, harming enamel if used often.
Can whitening treatments be done for kids or teenagers?
Teeth whitening is not recommended for kids or teenagers because their teeth are still growing. Before trying whitening treatments, it’s best to wait until their teeth are fully grown.
Can teeth whitening be done on older adults?
Yes, older adults can whiten their teeth. But they might have more tooth sensitivity. Talk to your dentist to see what works best for you.
Can I use whitening products while wearing braces?
While it’s not entirely impossible, whitening your teeth with braces on is not recommended. The brackets and wires will stop the whitening from reaching all parts of your teeth. After your braces are off, your dentist can help you whiten your teeth.
Can teeth whitening cause long-term sensitivity?
Most people have sensitive teeth for only a short time after whitening, but it goes away in a few hours or days. If the sensitivity lasts longer, talk to your dentist about other options.
Can teeth whitening be done more than once a year?
You can whiten your teeth more than once a year, but waiting a little while between treatments is better. This keeps your tooth enamel safe. Ask your dentist how often you should whiten.
Will whitening my teeth make them look too white or fake?
Teeth whitening should look natural and make your smile better. Your dentist will help you pick the right shade so your teeth look healthy and not too white.
Can teeth whitening help with stained teeth from smoking?
Yes, whitening can help with stains from smoking. Smokers may need more treatments to get their teeth white. Keep up with good oral care and reduce smoking to help your teeth stay white.
Conclusion
Teeth whitening is a great way to make your smile brighter and feel more confident. Whether you get whitening done by a dentist or use products at home, following the instructions and taking care of your teeth are important. This way, your smile will stay bright for a long time.
If you want to whiten your teeth, a dentist can help you choose the best method. With good care, you’ll enjoy a beautiful white smile that makes you feel great every day!
If you want to brighten your smile and feel more confident, we’re here in Sydney to help! Contact Dr Jack Yang today at (02) 9000 1778 or (02) 8806 3712. We’ll guide you to the best possible teeth whitening option.
Sources
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Shinde E. Professional Teeth Whitening: Everything You Need To Know [Internet]. Forbes Health. 2023 [cited 2025 Jan 30]. Available from: https://www.forbes.com/health/dental/professional-teeth-whitening/
Gillespie C. Does Hydrogen Peroxide Whiten Teeth—and Is It Safe? [Internet]. Health. 2023 [cited 2025 Jan 30]. Available from: https://www.health.com/condition/oral-health/is-it-safe-to-use-hydrogen-peroxide-to-whiten-teeth
Cleveland Clinic. Are Teeth Whiteners Safe and Worth Trying? [Internet]. Cleveland Clinic. 2024 [cited 2025 Jan 30]. Available from: https://health.clevelandclinic.org/is-teeth-whitening-safe
