11. See also dental plaque identification procedure and removal. 12. Dental plaque contains about 300 species of bacteria, and a severe infection contains billions of bacteria.13. It is also used in dental disclosing tablets as a stain to show dental plaque on teeth. 14. Regular brushing and the use of dental floss also removes the dental plaque coating the tooth surface. 15. Additionally, brushing twice daily with a toothpaste containing stannous fluoride may reduce gingivitis, gingival bleeding and dental plaque . 16. Dental plaque is rich in dextrans.17. Salmonella, E . coli bacteria, secondhand smoke, fatty arterial deposits, gasoline fumes, unpasteurized apple cider and dental plaque . 18. ""'Lachnoanaerobaculum saburreum " "'is a bacterium from the genus of Lachnoanaerobaculum which has been isolated from human dental plaque . 19. Some clinicians believe that a reservoir of " H . pylori " in dental plaque can affect the result. 20. Studies have also shown that the most common strain of bacteria found in dental plaque may cause blood clots.