Infection Control and Public Health Regulations
The regulatory framework
Infection control obligations come from three layers: the dental board (as a practice standard and CE topic), the public health authority (adopting CDC-style guidance by reference), and occupational safety rules (bloodborne pathogens, hazard communication). Examinations typically test the adopted standard rather than the underlying science, so know which body issues the requirement and whether compliance is mandatory or advisory.
Core elements to know
Standard precautions apply to all patients regardless of diagnosis. Know the hierarchy: hand hygiene; personal protective equipment (gloves, mask, eye protection, gown as indicated); safe handling and disposal of sharps in rigid, puncture-resistant, labeled containers; instrument processing by cleaning, then packaging, then sterilization with monitoring (biological indicators, chemical indicators, mechanical parameters); and environmental surface barriers and disinfection. Know the difference between sterilization and disinfection, and which items are critical (enter tissue or vasculature - must be sterile), semicritical (contact mucosa - sterilization or high-level disinfection), and noncritical (intact skin - low-level disinfection).
Traps
Common distractors: assuming gloves replace hand hygiene; assuming an autoclave strip alone validates a load (biological monitoring is the accepted check); storing sterilized pouches indefinitely without date tracking; reusing single-use items; and failing to manage a needlestick - which requires immediate washing, reporting, and post-exposure evaluation, not discipline of the exposed worker.
Public health duties
Know reporting obligations for communicable disease, and the rule that a provider generally may not refuse treatment solely because a patient has a bloodborne infection, provided standard precautions are used.
Worked example
A question asks how a high-speed handpiece should be handled between patients. Rule of thumb: it contacts mucosa and is heat-tolerant, so it is steam sterilized between patients; surface wiping alone is inadequate because internal contamination occurs.