Which of the following can help reduce plaque accumulation?

Regular flossing and brushing is an effective method for reducing plaque accumulation because these practices physically remove food particles and plaque from the surfaces of the teeth. Brushing twice a day with fluoride toothpaste helps to disrupt the biofilm that plaque forms, while flossing is essential for cleaning the tight spaces between teeth where a toothbrush cannot reach. This combination not only helps to prevent plaque buildup but also reduces the risk of tooth decay and gum disease, making it the most effective strategy for maintaining oral health.

While mouthwash can provide some benefits, it should not be relied upon as the sole method of oral hygiene. Chewing gum can help stimulate saliva production, which can aid in neutralizing acids and washing away food particles, but it does not replace the need for brushing and flossing. Using toothpaste only once a week is insufficient for effective plaque control, as daily removal of plaque is crucial to prevent its hardening into tartar. Thus, the comprehensive approach of regular flossing and brushing is the best practice for plaque reduction.