Dental Assistant Practice Exam

What is the space called that exists between the free gingiva and the tooth?

1. Interdental Papilla

2. Gingival Sulcus

3. Alveolar Process

4. Periodontal Ligament

The correct answer is: Gingival Sulcus

The space between the free gingiva and the tooth is referred to as the gingival sulcus. This term specifically denotes the small V-shaped crevice or space that is formed at the interface between the gingiva and the enamel of the tooth. It is important because it plays a key role in periodontal health, serving as a natural barrier and a protective space for the underlying tissues. The depth of the gingival sulcus is clinically significant; healthy sulcus depths typically range from 1 to 3 millimeters. When probing reveals deeper measurements, it may indicate periodontal disease or other health issues, necessitating further evaluation. Understanding the gingival sulcus is crucial for dental assistants, as they assist in periodontal exams and oral hygiene instructions. Other terms presented in the choices describe different anatomical structures; for instance, the interdental papilla refers to the portion of gingiva that fills the interproximal space between two adjacent teeth but does not define the sulcus itself. The alveolar process is the bony part of the jaw that supports the teeth, while the periodontal ligament is a connective tissue structure that helps anchor the teeth in the alveolar bone. Each of these has distinct functions and locations that do not pertain to the specific space between the free