Genetics is the most common cause of darker colors in the gums. Excess melanin in the gums can cause them to appear brown or black instead of pink. Smoking, adverse effects from some drugs and the probable influence of amalgam fillings on the gums are all possible reasons for dark gums. Dentpark Multispecialty Dental Clinic is one of the few clinics in the area that offers laser gum whitening ( Depigmentation ). For more details please contact us! 8826066352.