Teeth can have many different shades, and some people have genetically darker teeth than others. Teeth can also become darker over time for many reasons, sometimes it is caused by staining from tobacco, food or drink, such as coffee, tea or red wine.
Some discolouration is due to superficial staining and can be removed or improved by professional cleaning. However, intrinsic discolouration (deep staining inside the tooth) cannot be polished away. In these cases, we can safely and comfortably whiten the enamel on the teeth without any risk of damage, creating a pearly white smile.