Yes, teeth discoloured by tea and coffee and be easily whitened by using a bleaching gel to breakdown the stains in them. Naturally, the less coffee and tea you consume, the more likely your teeth will return to their original colour. There are many other reasons why teeth can be discoloured. These include prolonged sickness or certain antibiotic use in the first six years of life, excessive fluoride consumption (white spots appear on teeth) or simply natural variation in tooth colour. We can determine the likely cause of your tooth discolouration and recommend the best ways to improve their appearance.