Does teeth whitening only whiten front teeth?

Author: Harmon Wolf  |  Last update: Sunday, January 18, 2026

Most of the kits contain carbamide peroxide and hydrogen peroxide, chemicals recommended by most dentists to whiten teeth. However, the downside to most of these kits is that they only whiten the front six teeth. In-office teeth whitening addresses all the shortcomings of in-store whitening kits.

Does teeth whitening only whiten the front?

Teeth whitening will whiten your teeth. However, it whitens your teeth uniformly. If you whiten all of them, the white spots will get whiter along with the remainder of your teeth and they will still be different colors. The good news is there is a way you can whiten all your teeth except the two in the front.

Why are my bottom teeth not whitening?

The natural color of teeth can vary due to various factors, including genetics, age, and lifestyle habits. Some individuals naturally have teeth that are darker or have a yellowish tint. These teeth may have a denser enamel layer or more pigmented dentin, making them more resistant to whitening treatments.

Why do whitening strips only cover front teeth?

We do not recommend using Crest 3D Whitestrips on your back teeth because the strips are specially designed to fit front teeth — the teeth shown when you smile. If you use Whitestrips on the back teeth, the strips may become loose and eventually fall off during the wear period as a result.

Which teeth cannot be whitened?

Teeth that have yellowed with age

As we age, the enamel becomes thinner due to wear and tear, revealing the underlying layer of tooth structure called dentin. Dentin is naturally yellowish and cannot be lightened with teeth whitening products.

Can You Whiten One Tooth?

Why do dentists not recommend teeth whitening?

If used over time and without the aid of a professional cosmetic dentist, this treatment could cause tooth sensitivity and at times pain. The worst part for these patients is that by affecting the enamel and causing teeth to become more sensitive overall, the teeth are then primed to become even more stained over time!

What is the least damaging way to whiten your teeth?

Here are six ways for you to naturally whiten your teeth without the use of any harmful chemicals:
  1. First things first, brush your teeth regularly: ...
  2. Oil pulling: ...
  3. Brush with baking soda and hydrogen peroxide paste: ...
  4. Rub banana, orange, or lemon peels: ...
  5. Take a diet rich in fruits and vegetables: ...
  6. Go to the dentist:

Do whitening strips whiten the back teeth?

Whitening strips don't cover all teeth because they are primarily designed to whiten the front, most visible teeth, ensuring ease of application and comfort. In this article, we'll delve into the intricacies of teeth whitening strips, examining their composition, application methods, and effectiveness.

Why do my teeth go back to yellow after using whitening strips?

Whitening strips often contain peroxide-based chemicals to eliminate enamel stains, which may lead to temporary irritation and redness of the gums. This redness creates a visual contrast that can make the teeth seem more yellow.

How do I whiten my back teeth?

The following strategies may help whiten teeth:
  1. Making dietary changes. Eliminating foods that mark the teeth can prevent further staining. ...
  2. Trying oil pulling. ...
  3. Brushing with baking soda. ...
  4. Using hydrogen peroxide. ...
  5. Whitening with fruit. ...
  6. Chewing high fiber foods.

What vitamin deficiency causes yellow teeth?

The Link Between vitamin D Deficiency and Yellow Teeth

Increased Susceptibility to Cavities: Weak enamel due to insufficient calcium absorption increases the risk of cavities. Decayed areas can appear yellow or brown, contributing to an overall discolored smile.

What color makes your teeth look the whitest?

Make your teeth look whiter – Darker shades like royal/navy blue, purple, and even black can make the color of your teeth appear whiter. Even so, be aware that colors like dark green and brown can look like food.

Do bottom teeth take longer to whiten?

Also, the colour may appear too opaque (chalky). This will all even-out. You may find that your lower teeth do not lighten as quickly as the upper teeth.

How long does it take to whiten teeth with 6 hydrogen peroxide?

Hydrogen peroxide is inherently unstable and will break down immediately once you place the whitening trays in your mouth The majority of the peroxide will be spent within the first 20 minutes of wear, but to experience the full effect of the gel, we recommend at least 1 to 1.5 hours of wear time.

Do whitened teeth look fake?

This is a common concern, but we can assure you that professional teeth whitening treatment won't make your teeth look unnaturally white. If you've seen people whose teeth look too white to be natural, you're probably seeing their veneers, not their real teeth.

Do teeth get whiter days after whitening?

Color Spotting on the teeth may occur after in office Whitening due to temporary dehydration of the teeth. This should diminish within a few days after treatment. The whitening process will continue for 48 hours after treatment.

Can badly yellow teeth become white again?

Yellow teeth can regain whiteness through various methods, including good oral hygiene, professional dental cleanings, and teeth-whitening treatments. Stains from coffee, tea, or tobacco can be removed with adequate oral care, while professional procedures like bleaching or laser treatments offer quicker results.

Do crest white strips permanently whiten teeth?

No, whitening strips do not permanently whiten teeth.

How long does teeth whitening last?

It can last from a few months to up to 3 years – it varies from person to person. The whitening effect won't last as long if you smoke or drink red wine, tea or coffee, which can all stain your teeth.

Do whitening strips work better on dirty teeth?

Clean Surface for Better Adhesion: Brushing your teeth before applying whitening strips ensures that your teeth are clean, providing a better surface for the strips to adhere to. This can enhance the effectiveness of the whitening treatment.

Why is only the bottom of my teeth whitening?

The most common cause of uneven color after teeth whitening is the uneven application of products used. This can happen with the bleaching gel at your professional dentist and the peroxide solution in your at-home teeth whitening kits. In some cases, this can be a fault of the product.

How long will my teeth stay white after whitening strips?

Whitening strips can provide noticeable results in just a few days, and the effects can last anywhere from 6 months to a year. However, the longevity of your results depends on several factors, such as your diet, oral hygiene habits, and lifestyle choices.

What teeth Cannot be whitened?

If your teeth have any signs of decay or worn enamel, then you may also experience sensitivity if you undertake treatment. Additionally, you should note that if you have crowns or veneers, then these will not be whitened by the teeth whitening process.

Why is teeth whitening not recommended?

One of the most common side effects is tooth sensitivity, which can occur during or after treatment. Overuse or misuse of teeth whitening products can also lead to enamel damage, gum irritation, and discoloration.

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