Plaque is a biofilm composed of bacteria, and its formation is heavily influenced by diet and hygiene practices. Beneficial bacteria thrive on prebiotics found in nutrient-dense foods, while harmful bacteria flourish on ultra-processed carbohydrates. Maintaining a balanced pH in the mouth is crucial, as acidity can lead to enamel degradation and increased plaque buildup. Proper brushing, flossing, and even tongue scraping can disrupt this biofilm and promote better oral health.