“A black spot on your tooth shouldn’t be ignored,” says Tammy D. Duangthip, DDS, MSc, PhD, a doctor of medical dentistry at The Ohio State University College of Dentistry. There are several ...

But this can be difficult to spot without a dental X-ray. It's more likely that you'll ... yellow, brown, or black. The darker the color, the more severe the decay. Orange and green patches ...