National Board Dental Hygiene Examination (NBDHE) Dental Hygienist Practice Test

What type of calculus rating corresponds with the presence of calculus covering 2/3 of the exposed teeth?

1. 0

2. 1

3. 3

4. 4

The correct answer is: 3

The type of calculus rating that corresponds with the presence of calculus covering 2/3 of the exposed teeth is associated with a higher severity of calculus deposition. In dental hygiene assessment, a calculus rating of 3 typically indicates significant accumulation of calculus, as it suggests that a substantial portion of the tooth surfaces is affected. This level of calculus coverage can lead to complications such as periodontal disease, as the presence of heavy calculus can harbor bacteria and contribute to inflammation of the surrounding gum tissue. It is critical for dental professionals to accurately assess and score calculus deposits, as this informs the appropriate treatment plans for the patients and helps set expectations for oral hygiene improvements. In this context, the other ratings correspond to lesser amounts of calculus, indicating a lighter burden on oral health and a potentially different approach to treatment and patient education. Thus, a calculus rating of 3 is indeed associated with extensive calculus coverage of 2/3 of the exposed teeth.