Periodontal ligament : Functions
■ It provides a support mechanism for the tooth; it cushions teeth against excessive occlusal forces, preventing damage to the blood vessels and nerves at the root apex.
■ The periodontal fibres undergo continuous change. Its cells form, maintain and repair the alveolar bone and cementum.
■ Sensors in the periodontal ligament provide proprioceptive input, detecting pressures on the tooth.
■ The periodontal ligament has a rich supply of blood, which provides nutrients to the cementoblasts.