Baking soda can raise surface area discolorations but does not bleach tooth color; use moderately
https://www.mediafire.com/file/wm32te5dhzxhx00/pdf-8349-8921.pdf/file
Baking soda can raise surface stains but does not bleach tooth color; use sparingly, and couple with fluoride tooth paste to safeguard enamel and strengthen teeth.