Sodium bicarbonate can lift surface area stains but does not bleach tooth color; usage moderately

https://blogfreely.net/dernesvhbz/the-role-of-led-lights-in-professional-teeth-whitening-nvzj

Sodium bicarbonate can raise surface discolorations however does not bleach tooth color; use moderately, and couple with fluoride tooth paste to secure enamel and strengthen teeth.