How Long Does Teeth Whitening Last?

Updated On
September 27, 2023
Medically Reviewed by Renee R. Kalp
How Long Does Teeth Whitening Last

A radiant smile can be a game-changer, boosting one’s confidence and leaving a lasting impression. Teeth whitening has become a sought-after cosmetic procedure, with many individuals keen to achieve that picture-perfect smile. But a common question that often lingers in the minds of many is, “How long does teeth whitening last?” While the allure of pearly whites is undeniable, understanding the longevity and factors influencing the results of teeth whitening treatments is crucial.

In this comprehensive guide, we’ll delve into the intricacies of teeth whitening, shedding light on its duration, effectiveness, and the various methods available. Whether you’re considering a professional teeth whitening treatment or exploring at-home solutions, we’ve got you covered with insights and expert advice.

Different types of Teeth Whitening Procedures

1. Home Remedies

Home remedies are often the first step for those looking for teeth whitening options, without having to visit a dentist. Baking soda is a common ingredient, known for its abrasive properties that can remove surface stains but may also harm the enamel.

Oil pulling, using oils like coconut or sesame oil, is another method believed to improve oral health and remove toxins, although scientific evidence supporting significant teeth whitening is limited. These remedies are more natural and cost-effective but require caution and realistic expectations regarding their effectiveness.

2. Over-the-counter Whitening Products

a. Whitening Toothpaste

Whitening toothpaste typically contains mild abrasives and chemical agents designed to remove surface stains from the teeth.

Some may contain hydrogen peroxide or carbamide peroxide, which can lighten the color of the tooth enamel. However, the concentration of these bleaching agents is much lower compared to professional treatments, making them suitable for removing mild stains but not for altering the intrinsic color of the teeth.

b. Whitening Rinses

Whitening rinses are another accessible option, containing hydrogen peroxide to bleach teeth. However, the effectiveness of these rinses is often debated due to the short contact time with the teeth, usually around 60 seconds twice a day. This limited exposure may not be sufficient to cause a substantial whitening effect, especially on deeper stains.

c. Whitening Strips

Whitening strips are coated with a bleaching agent, usually hydrogen peroxide, and are applied directly to the teeth. The peroxide penetrates the enamel to reach the dentin and lighten the teeth.

The concentration of peroxide in these strips is higher than that in toothpaste or rinses, making them more effective at whitening. However, they should be used with caution to avoid gum irritation and tooth sensitivity.

d. Whitening Pens

Whitening pens are portable devices filled with a high-concentration peroxide gel. They are applied directly to the teeth and are suitable for touch-ups on the go. While convenient, the results are usually temporary, and the application may not be uniform, leading to uneven whitening.

e. DIY Whitening Tray Kits

DIY whitening tray kits usually include a mouthguard and a bleaching gel containing hydrogen or carbamide peroxide. The gel-filled tray is worn over the teeth for a specified duration. These kits offer more sustained contact between the bleaching agent and teeth compared to strips, rinses, or toothpaste, potentially providing more noticeable results.

Professional Teeth Whitening

1. Dental Chairside or In-Office Bleaching

In-office bleaching provides immediate results, using high-concentration bleaching agents like hydrogen peroxide or carbamide peroxide. The gums are protected, and the agent is applied directly to the teeth, often activated with heat, light, or laser. This method offers controlled and significant whitening but requires professional supervision to prevent tissue damage and ensure safety.

We recommend getting your teeth whitening process done by a professional dentist for better and long lasting results. Dental chairside teeth whitening lasts for 6 months to 3 years, considering that you are taking all the aftercare procedures recommended by your dentist.

2. At-Home Teeth Whitening with Professional Supervision

This method combines professional guidance with the convenience of at-home treatment. Custom-fitted trays are created from dental impressions, and a dentist-supervised bleaching solution is used. This method ensures uniform application and allows for the use of stronger bleaching agents compared to over-the-counter products, offering more lasting and significant results.

3. KöR Teeth Whitening System

The KöR system utilizes a high percentage of peroxide formulation and specialized trays to prevent saliva interaction, ensuring the effectiveness of the bleaching agent. This method is recognized for its ability to whiten even tetracycline-stained teeth and offers permanent results with periodic maintenance.

4. Laser Teeth Whitening

Laser teeth whitening uses laser energy to activate a highly concentrated whitening gel applied to the teeth. This method provides quick and significant results, making it a preferred choice for those seeking professional and consistent whitening outcomes. The results are long-lasting, but good oral hygiene is essential to maintain them.

Each of these methods has its unique benefits and considerations, and a consultation with a dentist can help in selecting the most suitable one based on individual needs and preferences.

How Long Does Teeth Whitening Last?

Teeth whitening is a popular dental procedure, but its results are not permanent. The longevity of the whitening effect can vary widely, depending on several factors including the method used.

Professional Teeth Whitening Treatment

Professional teeth whitening treatments are performed by dentists using high-concentration whitening agents. These treatments can make your teeth several shades lighter in just one session, typically lasting between 6 months to 3 years, depending on individual habits and dental hygiene. Regular touch-ups are recommended to maintain the optimal whiteness.

At-Home Whitening Kits

At-home whitening kits are a convenient option, allowing individuals to whiten their teeth at their own pace. These kits usually include whitening gels and trays or strips. The results from these kits can last anywhere from a few months to a year, depending on the product’s strength and frequency of use.

Whitening Toothpaste

Whitening toothpaste can remove surface stains on the teeth, offering a gradual improvement in tooth color. However, the results are generally modest compared to other methods and may last a few months. Regular use is required to maintain the results.

Over-the-Counter Whitening Strips

OTC whitening strips are another accessible option that helps whiten your teeth. These strips are coated with a whitening agent and are applied to the teeth. The whitening effect from these strips can last up to 6 months, depending on the individual’s dental care routine and dietary habits.

Laser Teeth Whitening

Laser teeth whitening is an advanced in-office procedure where a laser is used to activate a whitening agent applied to the teeth. This method can offer significant whitening results in a short amount of time, with the effects potentially lasting up to 2 years with proper care.

What factors influences teeth whitening longevity?

Transitioning from the various methods of teeth whitening, it’s crucial to understand the factors that influence the longevity of teeth whitening. The duration of the whitening effect is not solely dependent on the method used but is also influenced by several other factors.

Dietary Habits

Dietary habits play a pivotal role in determining how long teeth whitening lasts. Consuming foods and drinks that are high in tannins, such as coffee, tea, and red wine, can stain your teeth, reducing the longevity of the whitening effect. The scientific reason behind this is that these substances have a high chromogen content, which is known for its intense pigmentation and can adhere to the tooth enamel, causing discoloration. A possible solution is to limit the intake of such foods and drinks or consume them in moderation, and rinse the mouth with water immediately after consumption to minimize staining.

Oral Hygiene

Maintaining optimal oral hygiene is essential for prolonging the effects of teeth whitening. Regularly brushing and flossing can prevent the accumulation of plaque and tartar, which can stain the teeth. The scientific rationale is that poor oral hygiene allows the proliferation of bacteria, leading to the formation of biofilm on the teeth, which can attract and hold stains. To combat this, it’s recommended to brush your teeth twice a day, floss daily, and have regular dental check-ups and cleanings.

Tobacco Use

Tobacco use is another significant factor that can influence the longevity of teeth whitening. Smoking or chewing tobacco can lead to the accumulation of tar and nicotine on the teeth, causing yellow or brown stains. The compounds in tobacco interact with the surface of teeth, leading to stubborn stains that can diminish the effects of teeth whitening. Quitting tobacco use or reducing it can help in maintaining the whiteness of the teeth and overall oral health.

Age

Age is an inevitable factor affecting the color of our teeth. As we age, the enamel on our teeth wears thin, allowing the yellowish dentin beneath to show through. This natural process can make the teeth appear less white over time. While aging is unavoidable, maintaining good oral hygiene and avoiding substances that stain the teeth can help in preserving the whiteness of the teeth as long as possible.

Teeth Whitening Aftercare: How to keep your teeth white for longer

After understanding the factors that influence the longevity of teeth whitening, it’s essential to delve into the aftercare procedures that can help maintain the whiteness of your teeth for an extended period.

Regular Oral Hygiene

Maintaining regular oral hygiene is paramount for keeping your teeth white post-whitening treatment. Brushing your teeth twice a day, flossing daily, and using an antiseptic mouthwash can help in removing the plaque and preventing the formation of tartar, which can stain the teeth. Regular dental check-ups and cleanings are also crucial to remove any accumulated stains and keep your teeth healthy and white.

Avoiding Staining Foods and Drinks

To prolong the effects of teeth whitening, it’s advisable to avoid or limit the intake of foods and drinks that can stain your teeth, such as coffee, tea, red wine, and berries. If consuming these, rinsing your mouth with water immediately afterward can minimize the risk of staining. Using a straw for drinks can also reduce the contact of the liquid with the teeth, preventing potential stains.

Quitting Tobacco

For those who use tobacco, quitting or reducing tobacco use can significantly help in maintaining the whiteness of the teeth. Tobacco can cause stubborn stains that are hard to remove, and avoiding it can prevent the accumulation of tar and nicotine on the teeth, maintaining the results of the whitening treatment.

Using Whitening Toothpaste

Incorporating whitening toothpaste into your daily oral care routine can help in maintaining the results of a teeth whitening treatment. Whitening toothpaste can remove surface stains and prevent yellowing, helping in prolonging the whiteness of the teeth. However, it’s essential to use such toothpaste in moderation as excessive use can lead to tooth sensitivity.

Regular Touch-Up Treatments

Depending on the type of teeth whitening method used, regular touch-up treatments can be beneficial in maintaining the results. Over-the-counter whitening strips, trays, or pens can be used periodically, as recommended by your dentist, to keep your teeth white and bright.

Do teeth turn yellow again after whitening?

Yes, teeth can turn yellow again after whitening. The longevity of teeth whitening results can vary depending on several factors including the type of whitening treatment used, individual dietary habits, oral hygiene, and the natural aging process.

Consuming foods and beverages that are rich in tannins, such as coffee, tea, and red wine, can stain teeth over time. Smoking is also a significant contributor to teeth discoloration. Additionally, as individuals age, the enamel on the teeth can wear down, revealing the naturally yellowish dentin underneath.

Maintaining good oral hygiene by regular brushing, flossing, and dental check-ups, along with avoiding stain-causing foods and beverages, can help in prolonging the whitening results. Some people may also need touch-up treatments periodically to maintain the desired level of whiteness.

Is it worth it to get teeth whitened?

Whether getting teeth whitened is worth it or not largely depends on individual preferences and values. For many, having a brighter, whiter smile boosts self-confidence and improves overall appearance, making teeth whitening a valuable investment. It can be particularly worthwhile for those who have stained teeth due to consumption of certain foods, drinks, or tobacco and are looking to restore their smile.

However, it’s crucial to have realistic expectations, as the effectiveness of teeth whitening can vary based on the individual’s dental health and the type of staining present. Additionally, considering the cost, potential side effects, and the temporary nature of the results is essential. For those who prioritize oral aesthetics and are willing to maintain the results with proper care and potentially additional treatments, teeth whitening can indeed be worth the investment.