6 Reasons Why Teeth Whitening Won't Work - (2024)

6 Reasons Why Teeth Whitening Won't Work - (1)

Who doesn’t want the confidence and perceived great looks of a whiter smile? In America, a staggering 80% of adults want whiter teeth and evidence in Canada shows the same.

Teeth whitening treatments can be effective for most people, but not necessarily for everyone. It’s important to consult with your dentist before undergoing any teeth whitening treatment. Dental professionals can evaluate your specific situation and recommend the most suitable options for achieving your best results.

At Reflections Dental Oakville, we’re here to answer all your oral care and cosmetic dentistry questions. Want to whiten your teeth to achieve your desired, confident smile? Ask us and we’ll discuss your best options!

Six Reasons why teeth whitening may not achieve great results for everyone

While teeth whitening treatments can be effective for many people, the extent of improvement depends on several factors that include the following. In turn, the results vary greatly across individuals.

1. Intrinsic Stains

Intrinsic stains are stains that occur beneath the enamel, within the dentin layer of the tooth. They can be caused by factors like trauma, excessive fluoride exposure during tooth development, or certain medications. Since teeth whitening treatments primarily target the outer layer of the teeth, they may have limited effectiveness in removing these deeper stains. In such cases, alternative cosmetic dentistry options like dental bonding or veneers may be recommended to improve the appearance of the teeth.

2. Tooth Color and Composition

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. Teeth with a thicker enamel layer tend to respond better to whitening methods because the enamel acts as a barrier, allowing the whitening agents to penetrate more effectively.

3. Dental Restorations

Dental restorations like dental crowns, veneers, or fillings are typically made of materials like porcelain or composite resin that do not respond to traditional teeth whitening treatments. If you have visible restorations in your front teeth and undergo teeth whitening, the natural teeth may lighten while the restorations remain the same color. This can result in uneven coloration, requiring replacement or modification of the dental restorations to achieve a uniform appearance.

4. Age-related Factors

As we age, our teeth naturally undergo changes that can impact their color. Over time, the enamel layer can wear down, exposing the underlying dentin, which tends to be more yellowish. Additionally, the dentin itself can darken or develop micro-fractures, making teeth appear darker or discolored. Teeth whitening treatments may have limited effectiveness in addressing these age-related changes, and alternative cosmetic options may be considered.

5. Medications and Health Conditions

Certain medications, such as tetracycline antibiotics, can cause tooth discoloration during tooth development in children or when taken by adults. These stains are often deep within the tooth structure and can be difficult to remove with teeth whitening treatments alone. Similarly, certain health conditions or treatments like chemotherapy can affect tooth coloration. In such cases, alternative cosmetic solutions, such as dental bonding or porcelain veneers, may be recommended to achieve the desired aesthetic outcome.

6. Poor Oral Health and Habits

Teeth whitening treatments work best on healthy teeth and gums. If you have underlying dental issues like tooth decay, gum disease, or enamel erosion, it can affect the effectiveness and safety of whitening treatments. These conditions may require treatment before considering teeth whitening. Additionally, habits like smoking or consuming staining substances like coffee, tea, or red wine can counteract the results of teeth whitening, making it more challenging to achieve and maintain a brighter smile.

Chances are you CAN Whiten Your Teeth

Despite the reasons why some might not be able to achieve desired teeth whitening results, this is the minority of people. Also, some of the above reasons can be improved first, like improving your own oral health care regimen. It’s common that some with discolouration simply want improvement to instill confidence, if not the brightest of white teeth. Consult your dentist and find our what is right for you – you may be pleasantly surprised at what results you might achieve.

6 Reasons Why Teeth Whitening Won't Work - (2024)

FAQs

Why is nothing working to whiten my teeth? ›

If teeth whitening does not work for you, it might be because of the product you are using, the type of tooth stains or spots, or strength of the bleaching gel. Product type – Whitening toothpaste does not remove deeply embedded stains.

Do some teeth not respond to whitening? ›

The fact is, not all teeth respond to whitening. Furthermore, it is important to understand what whitening products you use can really make all the difference. Let's consider certain things that might keep your teeth whitening treatment from working.

Why are my teeth not white enough after whitening? ›

Darkening or relapse of the tooth shade is expected after whitening. Relapse of shade occurs almost immediately as the freshly whitened dehydrated tooth rehydrates. Repetitive prolonged exposure of the chemical is the only way to achieve optimal results.

Why hasn't my teeth whitening worked? ›

Some home kits don't contain enough whitening product to be effective. Also, if a dental professional isn't doing the whitening, the mouthguard provided may not fit properly so some of the bleaching gel may leak out onto your gums and into your mouth, causing blistering and sensitivity.

Are some teeth impossible to whiten? ›

Teeth that have yellowed with age

Dentin is naturally yellowish and cannot be lightened with teeth whitening products.

Why do my teeth still look yellow after whitening? ›

Teeth can become temporarily dehydrated after using whitening strips. Your teeth may appear more yellow as a result of this dehydration because the enamel may become dry and lack moisture. Dehydrated enamel sometimes has a transparent appearance that makes the naturally yellowish dentin underneath visible.

What kind of teeth can't be whitened? ›

Yet, if your teeth stains are underneath the enamel of your teeth, known as intrinsic (internal) discoloration, then the bleaching agent won't be able to remove them.

When can teeth not be whitened? ›

Anyone allergic to peroxide (the whitening agent) should not use a bleaching product. Gum disease, worn enamel, cavities, and exposed roots. Individuals with gum disease or teeth with worn enamel are generally discouraged from undergoing a tooth-whitening procedure.

Can teeth be resistant to 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.

How can I make my teeth whitening more effective? ›

During the entire process of whitening, we sometimes advise to change your diet and avoid tooth staining foodstuffs such as tea, coffee, red wine and curry. Avoid smoking if possible. Maintain good oral hygiene. Tooth surfaces close to your gums might take longer to whiten; however, you shouldn't worry too much.

Why are the top of my teeth not whitening? ›

Thinner enamel is harder to bleach. Very thin enamel is then in turn very hard to bleach. The whitening saturation point (the point where the tooth cannot get any whiter) is most affected by this variable than any other.

Why won't my teeth whiten no matter what? ›

Your Teeth Aren't Clean

You may not see it, but your teeth may have a dirty biofilm or layer of plaque buildup that is preventing the whitening agents from targeting your tooth stains. Consider teeth whitening after your next routine dental cleaning.

Why aren't my teeth getting whiter with white stripes? ›

Teeth Are Not Clean

The chemicals break down the stain molecules that cause teeth to darken. Plaque buildup can block these whitening chemicals from reaching the stained teeth. Schedule a dental cleaning appointment first before using teeth whitening strips. This can prepare your teeth well for the whitening process.

Why isn't my teeth getting white? ›

Another reason why your teeth don't become white through brushing is that you will always stain them. Meaning, you will constantly consume food or drink or develop some habits, like smoking, that can stain your teeth. Just so you know, smoking, drinking coffee, cola, and wine can stain your teeth.

Why are my teeth still white after not brushing? ›

Even if teeth were to never come in contact with a discoloring agent, they still would appear slightly off-white in their natural state. The visible portion of teeth is comprised of dentin and enamel. Dentin is the hard and dense tissue that makes up most of a tooth's structure, and it's covered with enamel.

Why is my teeth whitening light not working? ›

Why is the blue light not working? Check to see that your Teeth Whitening Device is properly charged. If the green flashing light does not come on during charging: Make sure the power cord is plugged into both the power outlet and the charging case.

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