What are the risks of teeth whitening?
Disease description:
Tried teeth whitening because it was trendy, but ended up with extremely sensitive teeth. Even drinking cool water is painful, and my teeth have developed a yellowish tint. Could these be side effects from the whitening treatment? What should I do?
Doctor's answer (1)
Dr. Liu Chao
In general, teeth whitening may involve risks such as tooth sensitivity, gum irritation or damage, dental structure damage, uneven results, long-term dependency, and the need for repeated treatments.
1. Tooth Sensitivity: Chemicals used during the whitening process, such as hydrogen peroxide or carbamide peroxide, may penetrate into the interior of the tooth and irritate the dental pulp, causing tooth sensitivity. This sensitivity is usually noticeable for several days after treatment.
2. Gum Irritation or Damage: If whitening agents come into contact with the gums, they may cause inflammation, redness, or even ulcers. Professional dentists usually take protective measures to safeguard the gums; however, the risk may increase when using over-the-counter whitening products at home without proper supervision.
3. Dental Structure Damage: Long-term or excessive use of whitening products, especially those containing high-concentration bleaching agents, may damage the tooth enamel, making teeth more fragile and prone to breakage. Enamel, the hard outer layer of the tooth, cannot regenerate once damaged.
4. Uneven Results: Whitening outcomes can vary from person to person and may lead to uneven tooth coloration. This is particularly noticeable for individuals with fillings, crowns, or other dental restorations, which do not respond to whitening treatments and may contrast with the newly whitened natural teeth.
5. Long-Term Dependency and Need for Repeat Treatments: The effects of teeth whitening are not permanent. Over time, teeth may become discolored again, especially if habits contributing to tooth staining—such as smoking or dietary habits—are not modified. This may lead patients to seek frequent whitening treatments, thereby increasing the likelihood of associated risks.
It is recommended to fully understand the related risks before undergoing teeth whitening and to choose reputable, professional dental clinics for treatment. Additionally, individuals should control the frequency of whitening treatments according to their own dental condition to minimize potential harm.
