You've been using baking soda to whiten your teeth. It feels natural, cheap, and safe. Your grandmother probably used it. But does it actually work — and is it doing more harm than good?

Let's look at what the evidence says about baking soda for teeth whitening.

Baking soda is a mild abrasive. When you brush with it, the particles scrub away surface stains on your teeth. It also has a high pH, which means it can help neutralize acids in your mouth that cause decay.

That sounds good. But there's a catch.

Every toothpaste has a measure called RDA (Relative Dentin Abrasivity). The higher the RDA, the more abrasive it is to your teeth and gums. Standard baking soda has an RDA of around 7 to 9, which is considered low to moderate.

However, some people use baking soda too vigorously or too often. Brushing with strong pressure or using it daily can wear down enamel over time, especially along the gum line where enamel is thinnest.

Enamel doesn't grow back. Once you've worn it away, it's gone for good.

Baking soda can remove some surface stains and make your teeth look slightly brighter. But it can't change the natural color of your teeth or lighten deeper stains that penetrate the enamel.

Professional whitening treatments use hydrogen peroxide or carbamide peroxide, which actually break down stain molecules inside the tooth. Baking soda simply scrubs the surface.

If you want meaningful, lasting whitening results, baking soda alone won't get you there.

If you like the idea of baking soda, use it occasionally — not daily. And don't scrub hard. Gentle applications once or twice a week are less risky than aggressive daily use.

For real whitening results, talk to your dentist about professional options. They can give you safe, effective treatments that won't sacrifice your enamel for a marginally brighter smile.

Call 01323 723757 or book at www.meadsdental.com

Meads Village Dental Practice