However, several factors need to be considered when looking at using baking soda to whiten teeth. Although baking soda is a commonly used product, it is not without risks. Overuse can damage the enamel of the teeth, resulting in sensitivity and increasing the risk for cavities.
Baking soda should be used no more than once a week. Because this method will not clean any stains beneath the top surface of the enamel, it will only whiten the teeth by 1-2 shades.