Source
Pineapple paste
Pineapple is beneficial for health. It also works to remove the yellowness of the teeth. The nutrients in pineapple help to remove plaque and yellowness. Grind pineapple to make a paste to clean teeth. Add some salt and sugar to it. Apply this paste on your teeth and clean them. The yellowness will disappear in a few days.
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Banana peel

We often throw away the peel after eating a banana. This bark can be used to remove yellowness of teeth. To clean the teeth, he should break the white part of the banana peel and brush his teeth. Brush after. The yellowness and dirt of the teeth will disappear.
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The use of strawberries

Strawberries can be beneficial for teeth whitening. Grind strawberry slices to clean teeth. Add baking soda to it. Apply this paste on the teeth like normal toothpaste and clean with a brush. Teeth will be clean.
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Lemon and orange peel

Nutrients in lemons and oranges remove stains and yellowness from teeth. Teeth can be cleaned with their peels and yellowness can be removed. Rub lemon and orange peels over the teeth. This recipe will get rid of yellow teeth in few days.
Note: This article is for general information only and no medical treatment is claimed. Always consult your doctor for more information and make appropriate changes as per his advice.