An adult human typically has 32 teeth, including incisors, canines, premolars, and molars. The dental formula for adults generally consists of 8 incisors, 4 canines, 8 premolars, and 12 molars, which includes the 4 third molars, commonly known as wisdom teeth. Wisdom teeth usually emerge in late adolescence or early adulthood, but many people have them removed due to overcrowding or other dental issues. Proper dental hygiene is essential for maintaining these teeth, as they play crucial roles in biting, chewing, and overall oral health throughout a person's life.