The periodontal ligament is a group of connective tissue fibers that attach the tooth to the alveolar bone in the jaw. It plays a crucial role in supporting the tooth and maintaining its position within the gum tissue. This ligament also helps absorb the forces exerted during chewing, protecting the tooth and surrounding structures. In addition to providing support, the periodontal ligament contains blood vessels and nerves, which supply nutrients and sensation to the tooth. It is essential for the overall health of the periodontium, the supporting structures of the teeth, including the gums, bone, and ligament itself.