Can Your Teeth Become Sensitive Forever From Whitening?

Teeth whitening sensitivity is almost always temporary, lasting 1-4 days after treatment. Professional whitening under a dentist’s supervision in Bryn Mawr offers the safest results with proper enamel protection and minimal discomfort. 

If you have been contemplating getting your teeth whitened but are concerned about whether or not they will be sensitive permanently, well, good news! After practicing on the Main Line for over 30 years, I can tell you that it is very rare to have permanent tooth sensitivity to whitening. The most common type of sensitivity people experience from whitening is temporary discomfort that lasts only a couple of days and can be reduced or eliminated with some simple techniques.

I regularly hear from patients in my office located in Bryn Mawr (Dillon Family Dentistry) asking about whitening their teeth before attending weddings, going to reunions, and taking headshots for work. The questions about permanently sensitive teeth come up at almost every appointment when someone comes in to whiten their teeth. Therefore, let’s address what happens to your teeth during the whitening process, why some people feel a “tingling” sensation after whitening, and most importantly, how you can have a nice, bright smile without any discomfort!

What Actually Causes Tooth Sensitivity After Teeth Whitening?

The sensitivity that you experience after having your teeth professionally whitened actually occurs when the active ingredient (hydrogen peroxide or carbamide peroxide) enters through the enamel and reaches the dentin layer of your tooth, where the nerve endings are located. You can visualize the enamel of your tooth as if there are small “pores” in the enamel. When the whitening solution is used on your teeth, the peroxide works its way through the microscopic channels in the enamel and enters the dentin layer, where it can reach the nerve endings. 

When the peroxide makes contact with the nerve endings, it creates an inflammatory response, which your tooth may react to by signaling you with this message, “Hey, something’s happening to me!” Fortunately for you, this inflammatory response does not last long, and while your tooth won’t sustain any damage, it will be more sensitive to changes in temperature for a day or two than it was before you had the teeth whitened. Additionally, the effects of sensitivity will likely be amplified for a few days if you are moving from cold outside air into a warm environment like the Bryn Mawr Film Institute when you are just outside walking by the building.

Not all people will experience the same degree of sensitivity. Some of my patients describe the sensation as slight, while others will have sharp or sudden “zingers.” If you experience sensitivities, if your enamel is thin, if you have exposed roots or gum recession, you may have additional discomfort while your teeth are whitening than individuals with more normal, healthy teeth.

Is Teeth Whitening Sensitivity Permanent?

The vast majority of cases indicate that post-whitening tooth sensitivity is usually temporary. In most patients I see in my Bryn Mawr office, that sensitivity will be completely resolved within 48 hours. Usually, the transient sensitivity you might experience will last between 1 and 4 days following the completion of the whitening process.

Numerous studies have consistently shown that the majority of patients experience only temporary sensitivity after having their teeth bleached. Studies published in dental journals report that 1/3 – 2/3 of users of over-the-counter bleaching systems have mild to moderate sensitivity during treatment and experience no sensitivity after the treatment is over. There has never been any documented evidence showing that the use of properly used over-the-counter bleaching systems can cause irreparable damage to the structure of your teeth.

However, if you have pre-existing sensitivity issues due to gum recession, wear on the enamel, or cavities that were not treated, you will still have those sensitivity issues after whitening. The whitening process may temporarily highlight your existing sensitivity issues, but it does not create any new or permanent damage to your teeth. This is why I perform a comprehensive dental examination before any cosmetic treatment is done in my Bryn Mawr office.

How Long Does Whitening Sensitivity Last?

The duration of post-whitening sensitivity is influenced by several different factors, including: the amount of whitening agent used, how long it remained on your teeth, how sensitive your teeth are before the treatment, and if you are using in-office professional treatment, or over-the-counter whitening strips.

When using an in-office treatment like ZOOM whitening (which we’ve been providing on the Main Line for over 20 years), the highest level of sensitivity is generally within the first 24 hours of the whitening procedure and then decreases steadily thereafter. Most patients have no sensation of sensitivity by the 2nd or 3rd day. At-home tray systems using custom-made trays have less initial sensitivity, but may lead to persistent minor sensitivity over the duration of the treatment.

Over-the-counter whitening strips typically contain significantly less peroxide (about 5-6% vs. 25-35% for professional) and result in less intense sensitivity initially, but can produce longer-lasting discomfort due to the usage of the strips at least once per day for 10-14 days. In this situation, it is like the difference between funneling water through a funnel vs. a steady stream from a hose.

If prolonged, significant sensitivity persists after two weeks of the whitening treatment, it is recommended to schedule an appointment with your dentist for an examination, as there are possible underlying conditions (e.g., broken fillings, cavities, or recession) that need to be addressed.

Professional vs Over-the-Counter Whitening: What’s Safer for Sensitive Teeth?

“How do I choose between at-home whitening strips or a professional dentist? Only the person thinking of how white their teeth will be after either option knows the answer to that question.” Each option provides the person with a result that might have varying levels of sensitivity based on the above variables. Professionally performed whitening will eliminate many of the causes of tooth sensitivity that result from gum irritation caused by inappropriate use of toothpaste and/or teeth whitening products. The use of a barrier (usually a gel or rubber dam) will keep the whitening solution off the gums; timing and mg/ml strength of the whitening agent can be altered until you reach an acceptable level of whitening without producing unintended side effects such as tooth sensitivity; if you do have discomfort during the procedure, we will be able to immediately stop your procedure and/or apply a desensitizer if needed. 

The level of customization associated with over-the-counter products is not as great. You may find that the generic whitening strips are not able to cover every tooth evenly, and they may even overlap onto your gums, so you will know when they do this, since this can develop some sensitivity. Over-the-counter products do not have any guidance from a professional; therefore, you may not have any issues with the whitening strips; however, if you have untreated tooth decay and/or exposed roots, the whitening strips could cause you more than just sensitivity; they could also result in a lot of pain.

The fact that they do work well for people who have healthy teeth and very little sensitivity, and who would like gradual results, and have no problem with longer treatment times, does not mean that they are bad. However, if you are sensitive or would like very fast and dramatically whitened teeth with the oversight of a dentist, in-office whitening is your best option. If you would like to have the benefit of professional strength whitening at home and would like to use a custom-made tray to achieve these results, you will be able to obtain this option through us at our Bryn Mawr dental office location.

How to Reduce Tooth Sensitivity After Whitening

If you have sensitivity after whitening, you don’t have to suffer through it until it gets better. There are numerous strategies to help alleviate your discomfort: 

Using a toothpaste made for sensitive teeth 2 weeks before your whitening appointment will help prepare your teeth, and there are many to choose from with potassium nitrate as a key ingredient that decreases the nerve response in your teeth. I have recommended Sensodyne or similar types of toothpaste to all of my patients in Bryn Mawr. By using the toothpaste in the morning and at night, your teeth will have some protection prior to whitening your teeth. 

Avoid serving your whitening-treated teeth with hot and cold temperatures, and avoid hot coffee or ice water for the first couple of days after treatment. Use room temperature liquids or lukewarm foods as they won’t cause your teeth to have that zinger feeling. If you are grabbing lunch at one of the many great places to eat on Lancaster Ave in Bryn Mawr, request that your water be served without ice.

Some patients may require some type of over-the-counter pain medication before their whitening procedure. Ibuprofen is often recommended for its anti-inflammatory properties. However, if you cannot tolerate NSAID medications, Acetaminophen will also provide relief. Taking either of these medications prior to your whitening procedure can help to reduce potential sensitivity from your treatment.

Speak to your dentist about an in-office professional desensitizing treatment. Your dentist can use fluoride varnish or desensitizing gel immediately after your whitening procedure to create a protective barrier over your enamel that will help reduce sensitivity for weeks.

With at-home trays, it’s not necessary to whiten on consecutive days; for example, whitening every other day, or even every third day, will allow you to achieve your desired results while allowing your teeth time to recover.

Does Whitening Damage Enamel?

You are only worried about your teeth because you don’t want them to be damaged by whitening products. The science and reasoning behind this concern will be explained here for your peace of mind.

Whitening products can safely be used without damaging enamel when used according to the manufacturer’s instructions. The two types of whitening products available (hydrogen peroxide and carbamide peroxide) work through (1) oxidation and (2) chemical alteration of stain pigments trapped in the microscopic pores of tooth enamel, not by removing tooth enamel. So the structure of the enamel on the tooth will remain unaffected after the use of a whitening product.

However, there can be issues with improper or excessive use. Bleaching too often and using high concentrations without a dentist’s supervision can temporarily dehydrate your enamel. This will give it a chalky appearance and make it more porous or fragile, increasing its sensitivity. For these reasons, I limit my patients to no more than two whitening sessions a year and recommend they see a professional while doing the procedure.

Enamel will remineralize after whitening. Saliva contains calcium and phosphorus, which help to restore enamel. Drinking enough water and practicing good oral hygiene will help support this process. If you’re concerned about the health of your enamel, I’m happy to measure your enamel thickness and recommend the safest method to whiten during your consultation.

Safe Teeth Whitening Options for Sensitive Teeth in Bryn Mawr

If you are someone who has sensitive teeth, you are not disqualified from whitening; you simply need a more thoughtful plan. At Dillon Family Dentistry, we have established specific protocols that are designed for patients who have sensitivity concerns:

Lower concentration whitening solutions with longer exposure times tend to provide superior results than using a higher concentration professional whitening solution quickly. We can create a custom tray whitening system utilizing 10%-15% carbamide peroxide as opposed to higher concentration carbamide peroxide (e.g., 20%-35%). As a result, you will have the opportunity to wear your trays for an extended period, thereby significantly reducing nerve irritation caused by the peroxide.

Pre-whitening treatment with potassium nitrate gel, we can give you a desensitizing gel to use in your custom trays for a week prior to beginning whitening; this helps to prepare your teeth to better withstand exposure to the peroxide, leading to less sensitivity.

Your whitening schedule can be modified, too. For example, you can choose to whiten every other day or twice a week instead of each day. You’ll reach your target shade, but it will take you a bit longer to get there!

Some professional systems now have built-in desensitizing (reducing sensitivity) while still producing great results. This can be done by either mixing a remineralizing agent into the whitening gel or by putting it on right after you have whitened your teeth with the gel.

Alternatives to traditional whitening for people with extreme sensitivity may be discussed by using porcelain veneers or bonding to create a whiter smile without using any chemical whiteners. This option is more expensive and more complicated to get, but it may be an option if traditional whitening is too uncomfortable due to sensitivity.

What to Avoid After Teeth Whitening

To maximise your whitening outcome and minimise any sensitivity associated with the whitening process, be aware of some foods you should avoid during the 48 hours following your whitening treatment:

1. Foods and beverages that stain will negatively affect the results of your teeth whitening. Foods and beverages like coffee, wine, dark berries, tomato sauce, soy sauce, and very dark/multi-coloured beverages will readily stain your teeth through the open enamel pore. Think of the teeth the same way you might think of a newly painted wall; you would not touch the paint until it has fully dried… the same concept applies here;

2.  Foods and beverages that are acidic will cause an increase in sensitivity to your teeth. Foods and beverages that are acidic (citrus fruits, vinegars, and carbonated drinks) will cause an increase in sensitivity because the acid will temporarily soften your enamel; as a result, you should give your teeth a little rest from acidic foods and beverages for a few days.

3. Smoking or chewing tobacco will hurt your whitening results right away because of the staining, etc. However, using any of these products will also cause you to irritate gum tissue, which leads to sensitivity, so if you have spent the time and money on whitening, you need to protect your investment.

For the first week following your treatment, it is best to stick to your sensitivity toothpaste because whitening toothpastes may be too abrasive during your initial healing phase; you will be able to go back to using a whitening toothpaste for maintenance purposes, but allow your mouth to heal first.

When to Call Your Bryn Mawr Dentist About Whitening Sensitivity

Although most people will find that their sensitivity after whitening goes away on its own after a short amount of time, sometimes sensitivity can indicate something else that requires a professional assessment. Below are three reasons to call us about your sensitivity level:

1. If your sensitivity lasts longer than a period of two weeks, that is way out of the norm and could indicate an underlying issue that may need to be treated, such as a cavity, broken tooth, or gum recession.

2. If you have extreme sensitivity that cannot be controlled with over-the-counter pain medications, do not simply “tough out” that feeling. Extreme sensitivity may indicate that the whitening solution has gotten into an area of your tooth where you have exposed dentin or previously have had an existing dental issue aggravated by the whitening process.

3. If you see a visible notation on your teeth, such as white spots, translucency, and/or chalkiness, those may be signs that the enamel of your teeth is dehydrated or that you have over-whitened your teeth. We will be able to help you determine the reason for the condition of your enamel and potentially recommend any remineralization procedures that you may need.

4. If you have severe swelling of your gums or blisters/bleeding from the gums, you may have received a chemical burn from using products incorrectly. This type of injury is uncommon when the product is used under professional supervision, but it can occur when using over-the-counter whitening products if the whitening gel touches the gum tissue for extended periods.

5. If anything feels wrong, give us a call and follow your instincts to get in touch with our Bryn Mawr dental practice. We would prefer you come in for a quick assessment rather than have a minor problem turn into a major issue later on..

Final Thoughts: Brightening Your Smile Safely in Bryn Mawr

Teeth may not be permanently sensitive after undergoing whitening procedures, provided the procedures are performed correctly. Post-whitening sensitivity will generally be temporary in almost all cases and can be managed in most situations. The choice of an appropriate whitening technique for your particular situation, following the correct procedures and working with a dentist who is able to provide recommendations on lessening post-whitening sensitivity, is essential.

At Dillon Family Dentistry, we have assisted residents of the Main Line in obtaining a brighter smile for many years! If you want to have a brighter smile for an upcoming event, a renewing appearance, or just have more self-confidence, we will develop a customized whitening plan based on your individual needs and level of sensitivity. You will not have to choose between a white smile and a comfortable one. You can have both!

If you’ve avoided whitening your teeth due to concerns about sensitivity, we’d love to help you! Call our Bryn Mawr office on Lancaster Avenue to make an appointment today. During your appointment, we will examine your teeth, talk about what you want to achieve with teeth whitening, and find out which method of teeth whitening will work best for you. You deserve to have a smile that looks as good as it feels.

Are you ready to do something about your smile? Call Dillon Family Dentistry at (610) 991-7844 to schedule your consultation today! Dillon Family Dentistry is located at 1084 East Lancaster Avenue, Bryn Mawr, PA, and serves patients along the Main Line in Ardmore, Haverford, Rosemont, and Villanova.

Frequently Asked Questions

1. Can teeth become sensitive forever from whitening?

Sensitive teeth due to whitening procedures are very uncommon. Most patients will have some degree of temporary tooth sensitivity, lasting anywhere from 1 to 4 days after the completion of the whitening procedure. Studies show that any discomfort experienced from the whitening process is temporary and will resolve entirely after the whitening process is completed. Existing dental problems, such as sensitivity resulting from recession of gums, caries (cavities), and/or worn enamel, will continue to exist regardless of whether or not a teeth-whitening procedure has been performed; that being said, no long-term or permanent damage to the nerves will result from teeth-whitening procedures.

2. How long does tooth sensitivity last after teeth whitening?

Most patients experience sensitivity for 1-4 days after whitening treatment. In-office professional whitening typically causes sensitivity that peaks within 24 hours and then decreases steadily. Over-the-counter whitening strips may cause milder but longer-lasting discomfort throughout the treatment period. If you’re still experiencing significant sensitivity two weeks after whitening, you should schedule a dental checkup to rule out underlying issues like cavities, cracked fillings, or gum problems.

3. Is professional teeth whitening safe for people with sensitive teeth?

Yes, professional teeth whitening can be very safe for people with sensitive teeth when done correctly. Dentists can use lower-concentration whitening agents, apply desensitizing gels before and after treatment, customize treatment schedules, and protect their gums during the process. At Dillon Family Dentistry in Bryn Mawr, we develop customized whitening protocols specifically for patients with sensitivity concerns, including modified concentrations and pre-treatment desensitizing steps.

4. What causes zingers after teeth whitening?

Teeth whitening can cause a brief, sharp/jarring sensation in some patients’ mouths, commonly known as “zingers.” Zingers happen because the porous nature of enamel allows and helps transport hydrogen peroxide into the dentin layer of teeth and irritates the nerve endings of teeth. Zingers are much more intense than typical tooth sensitivities when consuming beverages or food that are either very cold or very hot. Zingers generally last only a few seconds and occur less often as the tooth heals from the whitening procedure, typically resolving within 2-7 days.

5. Does whitening damage tooth enamel?

When used properly, whitening products do not damage enamel. Hydrogen peroxide and carbamide peroxide work by breaking apart stain molecules through oxidation; they’re not stripping away enamel structure. However, overuse or misuse of high-concentration products can temporarily dehydrate enamel, making it more porous and brittle. This is why professional guidance is important. Your enamel naturally remineralizes after whitening through your saliva’s calcium and phosphate content.

6. How can I reduce tooth sensitivity after whitening?

For approximately 2 weeks prior to whitening (and afterwards) use a sensitivity toothpaste containing potassium nitrate. Avoid any foods or drinks with extreme cold or heat for the first few days after your treatment. Use ibuprofen or acetaminophen as needed to relieve any inflammation. Speak to your dentist about getting professional desensitizing gel or fluoride varnish applied immediately following whitening. Do not have whitening treatments in consecutive days; rather, allow a few days between each of your treatments. These recommendations will greatly decrease or possibly eliminate your sensitivity following teeth whitening.

7. Are whitening strips bad for your teeth?

Whitening strips aren’t inherently bad for your teeth when used as directed, but they do have limitations. They contain lower peroxide concentrations than professional treatments and can’t protect your gums the way a dentist can. If strips overlap onto gum tissue, they can cause irritation. They also don’t fit perfectly to every tooth shape, potentially leading to uneven whitening. Strips work best for people with healthy teeth and minimal sensitivity who want gradual results and are willing to follow instructions carefully.

8. What should I avoid after teeth whitening?

Refrain from staining foods or drinks for 2 days after your procedure, excluding coffee, tea, red wine, dark berries, tomato sauce, soy sauce, and other dark-colored beverages. Refraining from using highly acidic foods such as citrus, vinegar-based dressings, and carbonated soft drinks could increase sensitivity in your mouth as well. Do not use tobacco; tobacco products will begin to leave a stain on your new teeth immediately. Do not use any whitening toothpastes for the first week after your procedure, as they may be too abrasive during the healing process; use only toothpastes that are designed for sensitive teeth.

9. How often can I safely whiten my teeth?

Most dentists recommend whitening no more than twice per year to avoid enamel dehydration and excessive sensitivity. Professional in-office whitening typically lasts 1-2 years with proper maintenance, so frequent touch-ups aren’t usually necessary. If you’re using at-home trays or strips, follow the product’s recommended schedule and don’t exceed it. Overuse can make teeth look chalky, increase sensitivity, and actually worsen results. If you feel you need whitening more often, talk to your dentist about the underlying causes of staining you might be able to address.

10. Can I whiten my teeth if I have crowns or veneers?

Teeth whitening procedures only make natural tooth enamel whiter; they will not change the color of existing dental restorations – including crowns, veneers, bonding and/or fillings. This means that if you choose to whiten your natural teeth, the dental restorations that you already have will remain as they currently are. This may result in an unattractive color mismatch between your natural teeth and the restorations. Consequently, you may want to replace these restorations if they can be seen once you have whitened your natural teeth. You should discuss this with your dentist at the time of your consultation, so you can make appropriate plans following your whitening procedure.