Cavities are one of the most common dental problems, but they are largely preventable with proper care. Understanding what causes tooth decay and adopting healthy oral hygiene practices can protect your smile for years. From choosing the right toothpaste and reducing sugar intake to scheduling routine dental cleanings, every small step contributes to stronger teeth. This article shares expert-backed strategies to help children and adults prevent cavities, maintain healthy enamel, and reduce costly dental treatments. Learn how daily preventive care can keep your teeth healthy, pain-free, and naturally beautiful.