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

A plaque index of 2.1 is considered what level of plaque accumulation?

1. Good

2. Acceptable

3. Poor

4. Excellent

The correct answer is: Poor

A plaque index of 2.1 indicates a moderate level of plaque accumulation. In dental hygiene assessments, the plaque index is a valuable tool used to evaluate oral hygiene status. Typically, a lower score represents better oral hygiene and less plaque accumulation, while a higher score signifies more significant plaque buildup. For context, a score of 0 indicates no plaque, scores from 0.1 to 1.0 are often interpreted as good to excellent oral hygiene, and values rising above 1.0 typically indicate a need for improved oral care practices. A score of 2.1 falls into the category of poor oral hygiene, as it reflects a substantial accumulation of plaque that could lead to periodontal disease and other oral health issues if not addressed. Understanding this scale helps dental hygienists communicate the significance of maintaining proper oral hygiene to patients and underscores the importance of regular dental cleanings and good home care routines.