Dental Assistant Practice Exam

What is the typical depth that the gingival sulcus rarely exceeds?

1. 1-2 mm

2. 2-3 mm

3. 3-4 mm

4. 4-5 mm

The correct answer is: 2-3 mm

The typical depth of the gingival sulcus, which is the space between the tooth and the gum, is rarely greater than 2-3 mm in healthy individuals. This range reflects normal periodontal health and signifies that the supporting structures around the teeth are in good condition without signs of disease, inflammation, or recession. When measuring the depth of the gingival sulcus, it is crucial to understand that a depth within the 2-3 mm range indicates a healthy attachment of the gums to the teeth. Depths greater than this can suggest the presence of periodontal disease or inflammation, which could lead to further complications if not addressed. In clinical settings, dental professionals may assess the gingival sulcus depth using a periodontal probe. The consistency of the 2-3 mm range is significant, as it is well-documented in dental literature. Therefore, this knowledge is essential for dental assistants as they prepare to assist in periodontal evaluations or discussions about oral health with patients.