Teeth are hard, calcified structures found in the mouths of many animals, including humans. They are primarily used for biting and chewing food, helping to break it down into smaller pieces for easier digestion. Teeth are made up of several parts, including the enamel, dentin, and pulp, each serving a specific function in maintaining dental health. In humans, there are four main types of teeth: incisors, canines, premolars, and molars. Each type has a unique shape and purpose, with incisors designed for cutting, canines for tearing, and molars for grinding food. Proper dental care, including regular brushing and visits to the dentist, is essential for keeping teeth healthy and preventing decay.