Tooth-colored composite fillings typically last 5–10 years, while metal amalgam fillings can last 10–15 years. However, composites blend naturally with teeth and are mercury-free, making them a popular choice. Proper oral hygiene and avoiding hard foods can extend their lifespan. For expert placement and advice on the best filling type for you, visit the best dentist in columbia mo. Regular check-ups ensure they remain intact and cavity-free.