A Guide to Good Brushing
Healthy gums don’t bleed, so if your spit is pink after brushing or flossing, it could be an early sign of gum disease. If caught early on, the effects of gum disease are reversible.
Bleeding gums are often caused by the build-up of plaque around, on, and between your teeth. Unless removed (usually by brushing), this bacteria can irritate your gums, causing them to bleed.