Oral pigmentation refers to discoloration of oral mucosa or gingiva as a result of a variety of lesions and conditions that are associated with several endogenous and exogenous etiologic factors.These conditions include drug use, heavy metals, genetics, endocrine disturbance, and inflammation. 1 The color of the oral melanin pigmentation may vary from light to dark brown or black according to the amount and distribution of melanin in the tissue. 2 Several studies reported significant correlation between cigarette smoking and oral pigmentation; prevalence of 21% and 90% among cigarette smokers was recorded. Gingival pigmentation is physiologic condition and called "racial pigmentation" or caused by several endogenous and exogenous factors including tobacco. 3 Although