Periodontal ligaments are connective tissues that attach teeth to the jawbone. They play a crucial role in supporting the teeth and maintaining their position in the mouth. These ligaments help absorb the forces exerted during chewing and biting, ensuring that the teeth remain stable. The periodontal ligaments consist of collagen fibers that connect the cementum of the tooth root to the alveolar bone. They also contain blood vessels and nerves, which provide nutrients and sensory feedback. Healthy periodontal ligaments are essential for overall dental health and can be affected by conditions like periodontitis.