How Long Does Teeth Whitening Last?

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JulesMannAugust 26, 2022

Various factors can affect your teeth whitening treatment. Your entire treatment depends on various aspects such as staining, cavity, and, most importantly, your dental practices—two types of staining on teeth: intrinsic and extrinsic. Intrinsic stains develop within the tooth itself due to tooth injury or decay. 

However, extrinsic stains are different because they appear on the surface of your teeth. Also, your dentist can remove them easily with some good dental practices and professional teeth whitening treatment. 

Another important factor affecting the lifespan of your whiter smile is how you will maintain your treatment for a long. Because some food items and drinks can stain your teeth more than others, you should avoid them as much as possible. 

How long does it take to whiten teeth?

When whitening your teeth, it is essential to understand that the amount necessary for whitening depends on the number of stains. Moreover, teeth whitening treatment takes three to four dental visits. 

First, the dental team needs to fabricate the mouth guard with the help of a teeth impression to ensure that the teeth whitening gel goes all over the teeth. 

Once the treatment begins, typically from your home, it involves applying teeth whitening product at least for two to four weeks. The amount of gel may depend on the number of teeth staining. Mostly dentists recommend this treatment for 30 to 40 minutes. One of the best alternatives for at-home treatment is one or two dental visits. 

Over-the-counter and in-home teeth-whitening treatment takes at least a month of wearing various mouthpieces every night. 

How much whiter can you make your teeth?

At-home or dental treatment solutions provide up to eight times whiter smile or less because it depends upon various factors like teeth condition, genetic stains, favorite food and drinks, and gaps between them. Moreover, during dentist consultations, you should express how much you expect whiting, then your dentist will do full mouth dental scanning to set realistic goals. 

How long does teeth sensitivity last after whitening?

Teeth whitening procedures have their side effects due to the use of various chemical and bleaching agents. However, trained and experienced dentists can limit them slightly negligible. The sensitivity and soreness may last for a few hours after the treatment because bleaching removes the protective layer of the surface and increases tooth porosity which may lead to sensitivity. More importantly, you don’t need to use a higher concentrated bleaching agent because it can penetrate your skin and cause a severe issue. 

How to eliminate sensitivity after teeth whitening? 

  • After the teeth whitening procedure, your dentist will prescribe your a toothpaste or specific gel to reduce sensation. 
  • You should brush your teeth with a soft toothbrush and rinse your mouth with lukewarm water rather than cold water. Also, use or leave desensitizing toothpaste or gel in your mouth for a moment or two to relieve your condition. 
  • You should also avoid hot and cold drinks such as coffee and tea to help your teeth-whitening results last longer. Because too hot and cold drinks can stimulate nerves and cause immeasurable pain.  
  • Use a straw to eliminate the chances of teeth sensitivity because it will bypass sensitive teeth, and it helps to maintain your teeth whiter and brighter for a long time. 

How much does professional teeth whitening cost?

Laser teeth whitening is a cosmetic procedure. So they are not covered by dental insurance, and this means you need to pay it out. According to a reliable source, one session may cost you about 100$ to 450$ and varies depending on factors such as location and your dentist.

You should remember that professional teeth whitening needs at least three to four dental visits to gain a white and bright smile. So you can expect an average of $400 to $1800 or more; for actual cost, visit your dentist


If you want to brighten and healthy smile, you should have good dental practices such as brushing and flossing your teeth at least twice a day and visit your dentist for routine check-ups at least two times a year. If you don’t find much improvement, contact your doctor for teeth whitening near me.

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