Teeth Whitening: In‑Office vs At‑Home (What Works Best?)
Professional whitening vs at-home kits—results, safety, sensitivity, timelines, and who should avoid whitening.
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Professional whitening vs at-home kits—results, safety, sensitivity, timelines, and who should avoid whitening.
What whitening can (and can’t) change
- Works well on: yellow/brown stains from coffee/tea, aging.
- Limited on: gray stains (tetracycline), fluorosis spots, internal tooth trauma.
- Does NOT whiten: fillings, crowns, veneers (they keep the same color).
In‑office vs at‑home: quick comparison
| Option | Best for | Typical timeline | Sensitivity risk |
|---|---|---|---|
| In‑office whitening | Fast results, events/weddings | 1 visit (30–90 min) | Medium (managed in office) |
| Custom take‑home trays | Gradual, controlled whitening | 1–2 weeks | Low–Medium |
| Over‑the‑counter strips | Mild stains and maintenance | 1–2 weeks | Medium (misuse increases) |
How to reduce sensitivity
- Use a sensitivity toothpaste for 7–10 days before whitening.
- Avoid very cold drinks for 24–48 hours after whitening.
- Don’t overuse products—more gel ≠ better results.
Who should avoid whitening (or get checked first)
- Active cavities, gum inflammation, or cracked teeth
- Pregnancy/breastfeeding (often advised to wait)
- Severe sensitivity without an exam
FAQ
How long do results last?
Often months to years depending on coffee/tea, smoking, and oral hygiene. Touch‑ups help.
Will whitening make my teeth look fake?
Good whitening is subtle—your dentist can aim for a natural shade.
Can I whiten if I have crowns?
Yes, but crowns won’t change color; you may need shade matching.
Medical note: This article is general information and not a diagnosis. For urgent symptoms, contact a dentist or emergency services.
