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According to a 2016 international study, researchers found severe periodontal disease is the 11th most prevalent global disease. The World Health Organization says oral health is a key indicator of overall health, but questions around brushing have become topics of debate in the dental, medical, and online communities. The frequency of brushing, the best time to brush, and the ingredients that most effectively and safely combat plaque and decay are part of this discussion. However, most experts agree that you need to brush your teeth regularly to maintain oral health.

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1. American Dental Association Recommendations

Most dentists tell their patients to brush twice a day for two minutes using a soft-bristled toothbrush. We're encouraged to clean the chewing, outer, and inner surfaces of the teeth. These recommendations are based on information from the American Dental Association (ADA), the oldest and largest organization representing the dental profession. Dental professionals recommend replacing your toothbrush every three to four months -- frayed bristles become less effective at removing food particles and plaque. The recommended technique for brushing is to place the brush at a 45-degree angle and brush back and forth using short strokes.

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