Teeth Whitening Teeth whitening can be an effective way of lightening the natural colour of your teeth with out causing damage. Although people can buy tooth whitening home application kits in stores, supervised tooth whitening by a dental care professional can ensure complete safety during treatment and a brighter looking smile. Patients are at higher risk of increased tooth sensitivity due to over-application of tooth whitening gel at home if not supervised properly by a dentist. However, we only offer supervised home whitening that is designed to lower the risk of tooth sensitivity.