Below is an excerpt from an article found on MouthHealthy.org

When it comes to teeth whitening, you may see many different methods featured online and in magazines-from oil pulling to charcoal, and even turmeric. It’s no surprise that DIY whitening is top of mind, either. When the American Academy of Cosmetic Dentistry asked people what they’d most like to improve their smile, the most common response was whiter teeth. 
Healthy smiles come in many shades, though it’s tempting to think ingredients in our own kitchens could hold the key to a brighter smile. Still, just because a method is natural doesn’t mean it’s healthy. In fact, DIY whitening can do more harm than good to your teeth. Here’s how:  

Fruits

Fiction:
The approach maintains you can make your teeth whiter and brighter household staples that are naturally acidic (like lemons, oranges, apple cider vinegar), contain digestive enzymes (such as pineapple or mango) and something that is abrasive (like baking soda).
Fact: 
When eaten as usual, fruit is a great choice. However, fruit and vinegar contain acid, and you put your pearly whites at risk when you prolong their contact with your teeth or use them to scrub your teeth because acid can wear away your enamel. Enamel is the thin outer coating of your teeth that protects you from tooth sensitivity and cavities. 

To read the entire article visit MouthHealthy.org.

The remainder of the article reveals fact vs. fiction for the following:

• Scrubs
• Spices and Oils
• Still Interested in Whitening?