There’s also some research that shows activated charcoal can help in changing the pH and health of the mouth. It’s effective in preventing cavities and killing the bad bacteria present in tooth decay and gingivitis.
Try this Trick to Whiten Yellow Teeth
Yes, it looks strange but the results are pretty amazing!
Watch THE VIDEO:
How to Whiten your Teeth Naturally
Source: http://wisemindhealthybody.com/wmhb/natural-teeth-whitener