The easiest way to prevent cavities is by brushing and flossing your teeth, removing plaque before it builds up. Dentists recommend brushing at least three times a day. It is especially important to brush after eating and before going to bed. Flossing at least once a day is important to remove plaque that accumulates in the hard-to-reach spaces between your teeth. You should brush with a soft bristled toothbrush. Angle the bristles about 45 degrees toward the gum-line. Brush for about 3 minutes. You should also visit your dentist at least twice a year for examinations and professional cleanings.
Another good way to prevent cavities is by reducing the amount and frequency of sugary foods you consume. In addition, use toothpaste and mouth rinse (not mouthwash -- most simply cover bad breath and may actually contain sweeteners) that contain fluoride. Fluoride is a mineral found naturally in all water sources. It re-mineralizes the enamel surface where acid has begun to eat it away. As a result, it can not only reduce the number of cavities, but it can also help to repair the early stages of tooth decay, even before it becomes visible to a dentist. In short, it creates a tooth surface that's resistant to further decay.
For the last fifty or so years, many communities have also added fluoride to their drinking water.
