Dentists Warn: Excessive Brushing Can Damage Your Teeth

Brushing teeth is considered fundamental to dental health. However, brushing too frequently or too hard can actually harm your teeth, experts warn.

Seoul Asan Medical Center recently stated that "people who are very conscious about dental health sometimes brush five to six times a day, but brushing too often with improper technique can cause problems."

Park So-yeon, a professor of pediatric dentistry, emphasized the importance of proper brushing methods. "If you brush too hard with excessive force, the enamel can gradually wear away," she said.

The recommended frequency is two to three times daily. According to the Korean Dental Association's oral care guidelines, brushing at least twice a day with fluoride toothpaste is recommended, with three times being ideal.

Morning and bedtime brushing are particularly important. Morning brushing removes bacteria that multiplied overnight. Evening brushing prevents bacterial growth during sleep, when reduced saliva production weakens the mouth's natural cleansing function. If plaque formed by bacteria on tooth surfaces and gums is not removed promptly, it hardens into tarite and can cause inflammation.

Brushing after lunch is beneficial, but rinsing with water or using mouthwash is acceptable if brushing is not possible. Use a soft toothbrush and press it firmly against tooth surfaces to clean the boundary between teeth and gums.

Brushing does not require force since it simply removes food particles and bacterial film. Brush at a 45-degree angle with slight vibrations in a sweeping motion. A pea-sized amount of toothpaste, about one-third of the bristle length, is sufficient. Focus on spaces between teeth and the gum line where bacteria concentrate.

Excessive brushing can deteriorate dental health. More than five times daily is too much. Frequent or forceful brushing significantly increases the risk of enamel erosion.

Enamel is the hard tissue covering the outermost layer of teeth, protecting the inner dentin from cavity-causing bacteria and withstanding chewing pressure.

While enamel is the hardest tissue in teeth, it is not indestructible. Physical friction from toothpaste and toothbrushes can cause wear. Severe cases may result in cervical abrasion, where the area where teeth meet gums erodes into a V-shape. This is why brushing technique and duration matter more than frequency.