Gingival Pigmentation Intensity and Distribution Among Egyptians

Inclusion Criteria: * Patients were free from any systemic disease as evidenced by Burkett's oral medicine health history questionnaire Greenberg et al.,2012. * Patients with physiologic gingival hyperpigmentation in the aesthetic zone. Exclusion Criteria: * Smokers. * Pregnant and lactating women. * Drugs intake which associates with gingival melanin pigmentation such as Antimalarials drugs, phenothiazines and oral contraceptives. * Pathologies that cause gingival pigmentation (e.g.: Addison's disease, Albright's syndrome, Kaposi sarcoma) * Patients with periodontal disease. * Physical or mental impairment.