The most common side effect from teeth whitening using a laser or light-accelerated procedure or bleaching product is tooth sensitivity. However, there are other known side effects to be aware of:
- Chemical burns from gel bleaching (if a high-concentration oxidizing agent contacts unprotected tissues, which may bleach or discolor mucous membranes)
- Over-bleaching or a “bleached effect” from intensive treatments
- Pain if you have “sensitive teeth” caused by open dentinal tubules
- Increased risk of tongue cancer
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