The colour of a tooth is determined, from birth, by the shade of the core of the tooth (dentine) and by the transparency and light refraction capacity of the enamel. The colour of the core is not altered, but over time the enamel becomes stained by colouring substances such as tobacco, lipstick, coffee, tea, tomatoes, etc. Consequently, tooth whitening consists of removing from the enamel, by means of chemical substances, all those particles that alter its original colour. Do not hesitate to look for the best dental aesthetics in Girona for your teeth.