Who wants to smile with yellow and stained teeth? It is possible to eliminate internal and external staining on the teeth as a result of factors such as consumed foods, drinks and the use of tobacco products, with teeth whitening applications. Teeth whitening or tooth bleaching can be performed with two different methods. Patients can whiten their teeth at home. For this, dentists prepare plaques suitable for the patient's mouth size. Special medicines determined according to the type of tooth staining are squeezed into special molds and the patient should use this tooth mold for 6 - 8 hours every day, if possible at night while sleeping. After about 1 month of application, the teeth can be whitened. However, since this method takes a long time, teeth whitening applications performed in clinics are more preferred.