Teeth Sensitivity After Whitening: Causes & Prevention
Philips Zoom and other whitening systems can deliver brilliant results—but some people notice temporary sensitivity. Here’s why it happens, who’s at risk, and how to prevent it so you can brighten your smile comfortably in East Brisbane.
Why Does Sensitivity Happen After Whitening?
Whitening gels (like hydrogen peroxide) temporarily increase enamel permeability to lift deep stains. As they pass through enamel to the dentin, fluid movement in microscopic tubules can excite the nerve—your brain perceives this as “sharp” sensitivity to cold, hot, sweet, or air.
- Enamel dehydration: Short-term dryness heightens sensation.
- Open dentin tubules: Microscopic channels transmit stimuli to the nerve.
- Existing wear: Acid wear, grinding, or gum recession can amplify sensitivity.
Who Is More Likely to Feel It?
- History of sensitive teeth or thin enamel
- Gum recession exposing root surfaces
- Frequent acidic drinks (soft drink, sports drinks)
- Recent dental work or untreated cavities
- Overuse of at-home strips or gels
What Can Trigger a Flare-Up?
- Very cold foods/drinks right after whitening
- High-strength gels without desensitisers
- Long wear times with trays/strips
- Brushing too hard with abrasive pastes
How to Prevent & Manage Sensitivity
- Prep 1–2 weeks before: Use a desensitising toothpaste (potassium nitrate or stannous fluoride) twice daily.
- Professional protocol: Philips Zoom at the dentist includes desensitising steps and controlled gel strength.
- Fluoride varnish/gel: Applied chairside to strengthen enamel and seal tubules.
- Adjust wear time: If using trays, take short breaks or reduce daily time.
- Eat smart for 48 hours: Avoid very cold/hot/acidic items; choose lukewarm, non-acidic foods.
- Soft brush, gentle technique: Use a soft brush and non-abrasive paste.
At-Home Whitening: Do’s & Don’ts
- Do: Follow your dentist’s tray plan and strength.
- Do: Use desensitising gel in trays if recommended.
- Don’t: Extend sessions beyond directions to “speed up” results.
- Don’t: Layer different products together.
In-Chair Philips Zoom
- Fast, predictable results with controlled gel strength
- Built-in steps to reduce sensitivity
- Optional fluoride/desensitiser application post-treatment
When Should I Seek Advice?
If sensitivity persists beyond a few days, wakes you at night, or occurs without whitening, book a check. Causes like decay, cracks, gum recession, or bite issues may need treatment before you continue whitening.
FAQs: Whitening & Sensitivity
How long does whitening sensitivity last?
Typically 24–48 hours. Hydration, desensitising toothpaste, and fluoride varnish can shorten this.
Is sensitivity a sign of damage?
No—temporary sensitivity is a common, reversible response. Ongoing pain needs an exam to rule out other issues.
Can I still whiten if I have sensitive teeth?
Yes. We tailor gel strength, session length, and add desensitisers (e.g., with Philips Zoom) to keep you comfortable.
What should I avoid after whitening?
Very hot/cold drinks, acidic foods (soft drink, citrus), and aggressive brushing for 24–48 hours.
Brighter Smile, Minimal Sensitivity
At EasyCare Family Dental (East Brisbane), we use Philips Zoom with protective protocols to keep you comfortable while achieving beautiful results.
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