Some causes of dark spots on the gums are melanin pigmentation, amalgam tattoos, smoker's melanosis, some medical conditions and oral malignant melanoma, according to the Oral Cancer Foundation. Most dark spots that appe... More » Health Dental

There are several factors that may cause dark gums in children, but the most-common reasons include a lack of proper hygiene, plaque and tartar buildup, ethnic background, and hereditary factors. Less-common but more-ser... More » Science Human Anatomy

Black spots on the gums can occur as a result of bruising, hyper-pigmentation, amalgam tattoos or hardened plaque, according to HealthGuidance. Although black spots on the gums are typically only a cosmetic concern, in v... More » Health Dental Dental Hygiene
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Black dots on the gums are caused by a variety of dental conditions, including bruising, pigmentation, plaque, tattooing caused by amalgam (silver) fillings and, rarely, a form of oral cancer, states Christopher Jacoby a... More » Health Pain & Symptoms

There are several reasons and factors that can cause dark colored gums particularly around the teeth, and these include genetic reasons, medical conditions, medications, dental fillings, bad hygiene and smoking, as noted... More » Health Dental

Major causes of a toothache include tooth decay, tooth fracture, infected gums, an abscessed tooth and a damaged filling. These causes can lead to constant tooth pain, fever, and swelling around the tooth, says WebMD. More » Health Dental

Possible causes of lumps on the gums include canker sores, oral herpes, oral cancer, salivary duct obstruction, acute sinusitis, esophagitis and pemphigus, according to WebMD. Lumps on the gums may also be harmless mucoc... More » Health Dental