Dental Assistant Practice Exam

What structure serves to connect the alveolar bone to the tooth?

1. Gingival sulcus

2. Periodontal ligament

3. Interdental papilla

4. Cementum

The correct answer is: Periodontal ligament

The periodontal ligament is the structure that connects the alveolar bone to the tooth. It is a specialized connective tissue that surrounds the roots of the teeth and attaches them to the alveolar bone. This ligament plays a crucial role in supporting the tooth within its socket, helping to absorb the forces exerted during chewing and providing a sense of proprioception, which helps the body sense the position and movement of the teeth. The periodontal ligament also serves as a conduit for blood vessels and nerves, contributing to the overall health of the tooth and surrounding structures. Its presence is vital for maintaining the stability of the tooth within the jaw and ensuring that it remains properly positioned. Understanding the function of the periodontal ligament is essential for dental assistants, as it has implications for various dental procedures, periodontal health, and patient education.