Infection Control · single question
Which item carries the LEAST risk of cross-infection?
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Correct answer: A. Facebow
- A. Correct. A facebow is a noncritical device that contacts intact skin/external structures, posing the lowest infection risk (Spaulding classification).
- B. Impression trays contact mucosa/saliva (semicritical) and require high-level disinfection or sterilization.
- C. Handpieces contact mucosa and generate aerosols/internal contamination — high risk, must be heat-sterilized.
- D. Syringes penetrate tissue (critical) and pose significant infection/sharps risk.
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