HOSA Dental Terminology Practice

What does the term 'gomphosis' refer to in dentistry?

1. Joint between the upper and lower jaw

2. Holding and anchoring action of a tooth in its socket

3. Type of dental implant procedure

4. The alignment of teeth in the arch

The correct answer is: Holding and anchoring action of a tooth in its socket

The term 'gomphosis' specifically refers to the anatomical and functional relationship where a tooth is held in its socket by the periodontal ligament. This type of joint is unique because it is a fibrous joint, which means it is connected by connective tissue. In the case of gomphosis, the tooth's root fits snugly into the alveolar bone of the jaw, and the periodontal ligament serves as a cushion, allowing for slight movement during chewing while providing stability and anchoring the tooth firmly in place. This term is critical in dentistry as it highlights the specific structure and function that support teeth within the oral cavity, crucial for effective chewing and overall oral health. The other options do not accurately describe gomphosis; for example, the joint between the upper and lower jaw refers to the temporomandibular joint, while dental implants involve surgical procedures unrelated to the natural embedding of teeth. Teeth alignment pertains to orthodontic considerations, which again are distinct from the specific action of holding teeth in their sockets.