11 Foods that Whiten Teeth
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Onions contain powerful antibacterial sulfur compounds. In a 1997 test tube study, onions killed various types of bacteria, including S. mutans. Research indicates that they are most powerful when eaten freshly peeled and raw. Of course, raw onions can do a number on your breath, so be sure to have some fresh parsley on hand. Try This: Add a few onion slices to salads and sandwiches each day.