What are the two parts of the periodontium?

The periodontium is the structure that surrounds and supports the teeth, playing a crucial role in oral health. It is comprised of two primary components: the gingiva and the attachment apparatus.

The gingiva, commonly referred to as the gums, is the soft tissue that covers the alveolar bone and surrounds the teeth, serving as a protective barrier. The attachment apparatus includes the periodontal ligament, cementum, and alveolar bone, which together work to anchor the teeth securely within the jaw.

By focusing on the combination of gingiva and the attachment apparatus, this choice accurately captures the fundamental elements of the periodontium that are necessary for maintaining tooth stability, health, and function. Other options either refer to components that are not part of the periodontium or do not pair the essential structures accurately within the context of the question.