Black Spot On Gums. Is It Oral Cancer? Dentadigest Pigmented (Purple or Brown) Lesions in the Mouth Pigmented (Purple or Brown) Lesions in the Mouth Kazemi Oral Surgery Facialart.com Common Causes of Dark Spots on Gums Smilepoint Dental Beaumont TX Intramucosal melanocytic nevi CCIDE Dove Medical Press A Problematic Oral Pigmentation: Deep Penetrating Nevus An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic