Adult teeth, also known as permanent teeth, are the set of 32 teeth that typically emerge in individuals between the ages of 6 and 21. These teeth replace the primary teeth, or baby teeth, and are designed to last a lifetime. The adult set includes incisors, canines, premolars, and molars, each serving a specific function in chewing and speaking. The first adult teeth to appear are usually the molars, followed by the incisors and canines. By the time a person reaches their late teens or early twenties, all adult teeth, including the wisdom teeth, may have fully erupted. Proper dental care is essential to maintain the health of these teeth throughout life.