Infection Control · single question
Dental unit waterline contamination occurs because the water stagnates and accumulates in the lines/chair. The primary cause is that the lines are:
Show answer and explanation
Correct answer: B. Not flushed frequently enough
- A. Over-chlorination would reduce, not cause, biofilm growth.
- B. Correct. Stagnant water in narrow-bore tubing that is not flushed regularly allows biofilm to form and accumulate.
- C. Pressure is unrelated to biofilm accumulation in the lines.
- D. Using distilled/treated water actually helps reduce contamination.
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