Teeth whitening or bleaching, when performed by a professional and within the recommended guidelines, is generally considered safe and does not cause damage to teeth. However, it's possible to experience temporary side effects, such as sensitivity or discomfort, during or after the treatment. It's important to inform your dentist of any existing dental conditions or sensitivity issues prior to undergoing teeth whitening to ensure the safety and best possible outcome of the treatment.
In rare cases, overuse of whitening products or improper application of these products can cause damage to teeth and gums. This is why it's important to only undergo teeth whitening under the supervision of a dental professional and to follow all aftercare instructions.