Flossing twice a day is generally recommended as a part of a healthy oral hygiene routine by dentists. While there may be some debate about whether two times a day is necessary, most experts agree that it is sufficient as long as it is done properly. Flossing is designed to remove plaque and food particles from between teeth, which can help prevent the formation of tartar, gum disease, and other oral health issues. Proper flossing includes using a clean section of floss for each tooth and moving the floss in a back-and-forth motion to clean the sides of the teeth and the area between them. If you are flossing properly, there is no need to floss more than once a day. Over-flossing or harshly flossing can actually harm your gums and cause recession. It's important to use the right type of floss for your specific needs and to consult with your dentist for personalized advice on your specific oral health routine.