You may experience teeth sensitivity for the first few days after professional teeth whitening. However, it's temporary and usually goes away after a few days. Our dentists will prescribe anti-sensitivity toothpaste after your teeth whitening procedure. Unsupervised and over usage of at-home teeth whitening kits or DIY teeth whitening can lead to permanent teeth sensitivity as it can damage the enamel. In addition, improperly placed trays can lead to the whitening gel coming in contact with oral soft tissues, which can lead to burns. Therefore, it is recommended that you always consult a dentist before opting for a teeth whitening procedure.