Instrument Sterilisation — NDEB AFK MCQ
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Correct answer: A — Steam autoclave (moist heat under pressure)
Steam autoclaving (saturated steam under pressure at 121°C for 15-20 minutes or 134°C for 3-7 minutes) is the gold standard for sterilisation of reusable dental instruments. It is the most effective, reliable, and rapid method, killing all microorganisms including bacterial spores. The steam autoclave is recommended by Health Canada, CDA, and RCDSO for dental instrument sterilisation. Chemical sterilants (glutaraldehyde) are reserved for heat-sensitive items and require longer contact times.
Reference: CDC – Guidelines for Infection Control in Dental Health-Care Settings, 2003; CDA Infection Control Guidelines