Brushing and flossing are an important part of your dental hygiene regimen, but they will not be enough to ensure proper oral health. Brushing and flossing removes the superficial layers of plaque, but cannot remove it all. The plaque that you are unable to reach with floss and a tooth brush will harden into tartar which will build on itself and eventually damage your teeth, causing tooth decay and gum disease. Tartar can only be removed by a professional teeth cleaning provided by a licensed dental practitioner. If left untreated it will eventually lead to serious oral health issues, including tooth loss.