Brushing is the most effective method for removing harmful plaque from your teeth and gums. Getting the debris off your teeth and gums in a timely manner prevents bacteria in the food you eat from turning into harmful, cavity-causing acids.
Most dentists agree that brushing three times a day is the minimum; if you use a fluoride toothpaste in the morning and before bed at night, you can get away without using toothpaste during the middle of the day. A simple brushing with plain water or rinsing your mouth with water for 30 seconds after lunch with generally do the job.