Inclusion Criteria:  Inclusion criteria for the study:  No active periodontal disease No caries No systemic disease Patients who do not use any medication will be included in the study. Patients who will use more than 20 transparent plates in their treatment-  Exclusion Criteria:  Smoking (more than 1 pack per day) Patients consuming dyes such as coffee, tea, beer and red wine more than 2 times a day Patients using less than 20 clear plates in their treatment