While not a replacement for brushing, crisp, raw fruits and vegetables can help push plaque away while you chew.

Strawberries and pineapple have both been claimed to help whiten your teeth.

Strawberries

Teeth whitening with a strawberry and baking soda mixture is a natural cure popularized by celebrities.

Proponents of this treatment claim that the malic acid in strawberries will eliminate discoloration from your teeth, while baking soda will polish away stains.

However, science has not fully supported this cure.

While strawberries may help exfoliate and whiten your teeth, they are unlikely to penetrate the stains on your teeth.

A recent study discovered that a strawberry and baking soda mixture generated very little color change in teeth when compared to commercial whitening methods.

If you decide to try this strategy, only use it a couple times per week.

Despite research indicating that a strawberry and baking soda paste has little effect on tooth enamel, excessive use may cause damage.

To use this cure, mash a fresh strawberry, mix it with baking soda, and brush it on your teeth.

Pineapple

Some people believe that pineapple can whiten teeth.

A study discovered that a toothpaste containing bromelain, an enzyme found in pineapples, was substantially more successful than a conventional toothpaste at removing tooth stains (29Trusted Source).

There is, however, no proof that consuming pineapples has the same effect.

Prevent tooth stains from occurring in the first place.

While your teeth are naturally yellow as you age, there are several things you can do to help prevent stains.

Limit the consumption of staining meals and beverages.

Coffee, red wine, soda, and dark berries are notorious for causing tooth discoloration.