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Thursday, September 3, 2015
After flossing I had some bleeding. After rinsing my mouth with water I rinsed a second time with Listerine mouth wash. My spit was black. Why?
It is probably due to blood coloring listerine. It may also be smoking effect (if you are a smoker) or diet effect (coffee/tea etc. staining).
Binnaz Leblebicioglu, DDS, MS, PhD
Associate Professor of Periodontology
College of Dentistry
The Ohio State University