Dental implants and dentures both replace missing teeth, but they differ in important ways. Dental implants last a lifetime with proper care and are secured directly into the jawbone, allowing for normal eating. In contrast, dentures are not as secure and need replacing every 5-8 years. While implants have higher up-front costs, they prevent bone loss and other issues associated with tooth loss. Overall implants provide a more permanent and natural solution than dentures.