What is the direct answer?
Bicarbonate of soda may remove some surface stain, but it does not bleach internal tooth colour and hard scrubbing can wear surfaces.
What does this question mean?
Bicarbonate is a mild abrasive, not a peroxide bleaching agent. It can disturb extrinsic stain, while dentine colour and restorations require different approaches.
What can you do next?
Use fluoride toothpaste and a soft brush instead of scrubbing with loose powder. Have discoloration checked before choosing a controlled whitening method.
When should you seek dental care?
Seek care for sensitivity, grooves, recession, a single dark tooth or colour change after injury.
What should you ask the dentist?
Ask whether the stain is external or internal, whether enamel and gums are healthy and which whitening option suits you.
Frequently asked questions
Does bicarbonate remove yellow teeth?
It may reduce surface stain but will not reliably change dentine colour.
What works for deeper tooth colour?
A dentist can identify the cause and discuss a controlled whitening method or another suitable treatment.

