Acellular cementum is a type of dental tissue that covers the roots of teeth. It is a thin layer that helps anchor the teeth to the periodontal ligament, providing stability and support. Unlike other types of cementum, acellular cementum does not contain cells, which means it does not regenerate or repair itself. This tissue is primarily composed of collagen fibers and minerals, making it a strong and durable material. Acellular cementum plays a crucial role in tooth health, as it helps maintain the connection between the tooth and the surrounding bone, contributing to overall dental stability.