Dental plaque is a sticky, colorless film of bacteria that forms on teeth. It develops when sugars and starches from food interact with the bacteria in the mouth. If not removed through regular brushing and flossing, plaque can harden into tartar, leading to dental issues like cavities and gum disease. To prevent plaque buildup, it is essential to maintain good oral hygiene. This includes brushing teeth at least twice a day, flossing daily, and visiting a dentist for regular check-ups. A balanced diet low in sugary foods can also help reduce plaque formation and promote overall dental health.