What is the primary function of the periodontal ligament?

The primary function of the periodontal ligament is to anchor the tooth in the alveolar bone. This structure is a fibrous connective tissue that connects the cementum of the tooth root to the alveolar bone, providing both stability and support. Its role is crucial in ensuring that the tooth is securely positioned within the jawbone, allowing it to withstand the forces exerted during activities such as chewing while also maintaining overall oral health.

While the periodontal ligament does also transmit sensory information and may play a role in facilitating tooth movement during orthodontic treatment, anchoring the tooth is fundamentally its main function. Producing saliva is not a function of the periodontal ligament but is instead the role of the salivary glands.