Teeth whitening has become an increasingly popular cosmetic treatment over the past few decades. With the variety of over-the-counter and professional whitening products available, it’s easier than ever to get a brighter, whiter smile.
However, one common side effect of whitening treatments is increased tooth sensitivity. This sensitivity is usually temporary, but it can be quite uncomfortable during and after the whitening process. Using a desensitizing gel is an effective way to minimize discomfort.
But should you use desensitizing gel before or after whitening? Here’s a look at the pros and cons of each approach.
Table of Contents
Using Desensitizing Gel Before Whitening
Applying a desensitizing gel before the whitening process can help block pain receptors in the teeth. This prevents sensitivity from occurring in the first place. Some potential benefits of using desensitizing gel before whitening include:
- Preventing pain during the whitening process
- Decreasing sensitivity for several hours after whitening
- Requiring only one application of desensitizing gel per session
- Causing less irritation to the gums
Some dentists recommend applying desensitizing gel 30-60 minutes before beginning a whitening treatment. This gives the active ingredients time to take effect before the bleaching gel is applied. Common active ingredients in desensitizing gels include potassium nitrate, amorphous calcium phosphate, and sodium fluoride.
Using Desensitizing Gel After Whitening
Alternatively, desensitizing gel can be used immediately after completing a whitening treatment. Potential benefits of applying it post-whitening include:
- Immediately soothing teeth that are sensitive after whitening
- Providing relief for several hours after application
- Requiring only one treatment directly following whitening
- Being easy to incorporate into your routine
Most over-the-counter and professional whitening kits will include a desensitizing gel to use at the end of the process. This helps replenish minerals lost during bleaching and calm nerves. Using a gel with ingredients like aloe vera or potassium nitrate can be especially soothing.
The Verdict: Apply Both Before and After
While either pre- or post-whitening application has its perks, using desensitizing gel both before and after may provide the most significant pain relief and comfort.
Here are some tips for maximizing the effectiveness of desensitizing gel when whitening:
- Brush and floss before applying desensitizing gel pre-whitening to remove plaque and allow better gel absorption.
- Allow the first application to sit for 30-60 minutes before beginning whitening.
- Follow directions carefully during the whitening process to avoid unnecessary sensitivity.
- Rinse your mouth but don’t brush right after whitening.
- Apply another layer of desensitizing gel post-whitening and don’t rinse it off.
- Don’t eat or drink for 30 minutes after applying gel to allow full absorption.
- Take over-the-counter pain relievers as needed in the hours following whitening.
- Stick to soft foods and cool beverages for a day or two to avoid aggravating sensitivity.
Below is a helpful summary of when and how to use desensitizing gel with whitening treatments:
| When to Apply | Instructions |
|---|---|
| 30-60 minutes before whitening | Brush and floss, then apply a layer of gel. Let sit for 30-60 minutes before whitening. |
| Immediately after whitening | Rinse mouth, apply another layer of gel, and leave on for 30+ minutes. |
While whitening can lead to sensitive teeth, using desensitizing gel before and after the process can significantly reduce discomfort. Be diligent about properly applying the gel at both stages for best results. With some minor sensitivity lasting a day or two, you’ll be able to enjoy your bright new smile right away!
What Causes Tooth Sensitivity During Whitening?
To understand when to use desensitizing gel, it helps to know what causes tooth sensitivity during whitening. Here are the main reasons:
Chemical Irritation
Whitening products contain peroxide-based ingredients that work to penetrate the enamel and break down pigment molecules. However, these chemicals can also seep through microscopic fissures in the enamel and reach the dentin layer underneath.
The dentin contains thousands of microtubules that house nerve endings. Chemical irritation of these nerve endings is believed to be the primary cause of bleaching-related sensitivity.
Removal of Protective Proteins
Enamel is made up of hydroxyapatite crystals that are held together by protective proteins. The bleaching agents in whitening products can denature and remove these proteins.
This destabilizes the enamel and exposes more of the vulnerable dentin underneath. Sensitivity results when the nerves become more exposed.
Moisture Loss
Whitening strips, gels, and solutions draw moisture out of the teeth during the bleaching process. This moisture loss shrinks the dentinal tubules and makes them more susceptible to sensitivity triggers.
Open tubules allow for heat, cold, touch, pressure, and chemicals to more easily reach the nerve endings inside.
When Is Tooth Sensitivity Normal vs. Cause for Concern?
Mild to moderate tooth sensitivity during and after whitening is very common and not necessarily a cause for concern. However, there are some circ*mstances where sensitivity requires prompt dental attention:
Normal Sensitivity
- Occurs during and up to 4 days after whitening
- Gradually decreases with time
- Only occurs with trigger foods/beverages like ice water
- Responds well to OTC remedies like desensitizing toothpaste
Abnormal Sensitivity Requiring Dental Care
- Lasts more than 4 days after whitening
- Increases dramatically rather than decreases
- Occurs spontaneously without any trigger
- OTC remedies provide no relief
- Disrupts sleep or daily functions
- Accompanied by other dental symptoms like pain, swelling, cracks, etc.
You should inform your dentist about any abnormal sensitivity that lingers after whitening. It may be a sign of pre-existing tooth decay, leaky fillings, receding gums, or other issues that got aggravated by the bleaching process.
Tips to Prevent Pain After Whitening
You can take proactive steps before, during, and after whitening to help minimize sensitivity:
- Get any necessary dental work done first: Fill cavities, fix defects, and address any underlying problems.
- Use a lower-concentration peroxide gel: Ask your dentist to customize the gel to your needs.
- Apply it correctly: Follow instructions carefully to avoid over-bleaching.
- Don’t overdo it: Space out treatments with recovery time for your teeth.
- Avoid triggers: Hot, cold, sour, hard foods and biting pressure can aggravate sensitivity.
- Use sensitivity toothpaste: Switch to desensitizing toothpaste for a while.
- Try at-home remedies: Use topical gels, fluoride rinses, aloe vera, or soft brushing.
Being proactive, using desensitizing gel properly, and knowing when to contact your dentist can help you reap all the rewards of brighter teeth without all the pain.
Conclusion
Tooth sensitivity is a common side effect of teeth whitening procedures. However, using a desensitizing gel before and after whitening can greatly reduce discomfort.
Applying it before bleaching provides a preventive barrier while using it after soothes irritated nerves. Make sure to use the gel correctly at both stages for best results.
While some minor sensitivity for a couple days is normal, contact your dentist if it persists or worsens. With the right precautions, you can unveil a brilliant white smile with minimal pain or complications.
