Dealing With Post Whitening Tooth Sensitivity

Teeth whitening is a highly effective way to brighten your smile and remove years of stains caused by coffee, tea, red wine, and tobacco. While the results are often stunning, it’s common for some patients to experience tooth sensitivity after whitening treatment—whether it’s done in-office or at home.

At McLevin Dental in Scarborough, we believe that sensitivity shouldn’t stop you from enjoying a radiant smile. This guide offers practical advice for dealing with post-whitening tooth sensitivity, along with tips for prevention and relief.

Why Does Tooth Sensitivity Occur After Whitening?

Whitening products contain peroxide-based agents that temporarily:

Open microscopic pores in the enamel

Expose the dentin layer beneath, which contains nerve endings

Trigger heightened responses to hot, cold, sweet, or acidic stimuli

This sensitivity is temporary and usually resolves within 24–72 hours.

Symptoms of Whitening Sensitivity

Sharp, sudden pain when consuming cold, hot, or sweet foods and drinks

Sensitivity to air or breathing in cold air

Mild, throbbing discomfort in the teeth for a few hours after whitening

How to Manage Tooth Sensitivity After Whitening

1. Use Desensitizing Toothpaste

Brands like Sensodyne, Colgate Sensitive Pro-Relief, or similar contain compounds that block nerve pathways and reduce sensitivity.

2. Brush with a Soft-Bristled Toothbrush

Use gentle, circular motions to avoid irritating enamel and gums.

3. Avoid Temperature Extremes

Stick to lukewarm foods and beverages for 24–48 hours post-whitening.

Avoid ice water, hot coffee, or very cold desserts.

4. Skip Acidic Foods Temporarily

Citrus fruits, soda, vinegar-based foods, and wine can further irritate the enamel.

5. Avoid Whitening Toothpaste Temporarily

Whitening toothpaste contains abrasives that can worsen sensitivity immediately after professional whitening.

6. Rinse with Fluoride Mouthwash

Use an alcohol-free fluoride rinse to strengthen enamel and reduce sensitivity.

7. Use a Saltwater Rinse for Gum Comfort

Mix ½ teaspoon salt with 1 cup warm water and rinse gently 2–3 times daily if gums feel irritated.

8. Over-the-Counter Pain Relief

If discomfort persists, use ibuprofen (Advil) or acetaminophen (Tylenol) as directed for short-term relief.

Preventing Sensitivity Before Future Whitening

Use a desensitizing toothpaste for 1–2 weeks prior to whitening.

Schedule whitening treatments less frequently if you are prone to sensitivity.

Consider a lower-concentration whitening formula for gradual results with less discomfort.

Use custom trays from McLevin Dental for at-home whitening—they provide more even coverage and reduce gum irritation compared to over-the-counter strips.

How Long Does Sensitivity Last?

For most patients, sensitivity lasts 24–72 hours.

Mild sensitivity can occasionally linger for a few days, but should gradually improve.

When to Contact McLevin Dental

Call our Scarborough office if:

Sensitivity lasts longer than a week

You experience severe, lingering pain

Sensitivity worsens rather than improves

We may recommend fluoride treatments, a professional desensitizing gel, or adjustments to your whitening protocol.

Maintaining Your Bright Smile Without Sensitivity

Avoid frequent consumption of staining foods and drinks (coffee, tea, red wine).

Rinse your mouth with water after consuming stain-causing beverages.

Maintain regular cleanings at McLevin Dental to keep your teeth polished and stain-free.

Use whitening touch-ups as recommended by your dentist—less often for those prone to sensitivity.

Trust McLevin Dental for Safe, Comfortable Whitening

At McLevin Dental in Scarborough, we help patients achieve brighter smiles while minimizing discomfort. If you’re concerned about tooth sensitivity from whitening—or want to learn how to whiten your teeth safely and comfortably—our team is ready to guide you.