Have you had orthodontics (fixed braces) in the past and feel the appearance of your teeth changed thereafter? Have you had brown spots on your teeth from childhood?
White and brown spots where tooth enamel has lost some of its mineral content or has not developed properly from childhood are relatively common. To overcome this the surface of your tooth is cleaned in preparation for the specially designed polishing sequence.
For the maximum impact, tooth whitening and / or bonding are commonly used in combination with this polishing technique.