But here’s what many don’t realize: not all discoloration is the same. Surface (extrinsic) stains respond differently than deeper intrinsic ones. This distinction matters when exploring gentle at-home options.
But that’s not the full picture. Research and dental resources point to mild abrasives as one way to help lift those surface marks without harsh chemicals.
Why Baking Soda Stands Out for Stain Removal
Baking soda, or sodium bicarbonate, has been used for oral care for generations. Studies and reviews, including those referenced by dental associations, indicate it acts as a low-abrasion polishing agent that can help remove surface stains effectively and safely when used appropriately.
It works primarily through gentle mechanical action rather than bleaching. Its slightly abrasive nature helps scrub away plaque and pigmented particles, while its alkaline properties may help neutralize acids in the mouth that contribute to discoloration over time.
Here’s the interesting part: Unlike some harsher methods, baking soda is generally considered gentle enough for occasional use and is a common ingredient in many commercial whitening toothpastes.
