Markham Family Dentist Cosmetic Dentistry Invisalign Veneers Dental Implants Dental Root Canals Teeth Whitening Crowns and Dental Bridges Dentistry For Children Markham White Fillings Custom Mouthguards Oral Cancer Screening Teeth Whitening Dental bleaching, also known as tooth whitening, is a common procedure in general dentistry. According to the FDA, whitening restores natural tooth color and bleaching whitens beyond the natural color.