Plaque and tartar buildup on teeth leads to tooth decay and gum disease. Plaque begins forming within minutes of eating and fails to be removed through brushing can harden into tartar, irritating and inflaming gums. Taking good care of teeth through regular brushing and flossing can help prevent problems like cavities, gingivitis, and periodontitis. Professional cleanings every 6 months can further remove built-up plaque and catch early signs of problems.