Infection control, sterilization, and public health safety standards
Domain 4 - Infection control, sterilization, and public health safety
This domain tests the operational standards that protect patients and staff. Connecticut incorporates accepted national standards and enforces them through DPH inspection and discipline; exam questions favor the specific failure over the general principle.
Core requirements
- Standard precautions apply to every patient: hand hygiene, gloves, masks, eye protection, gowns when splatter is anticipated, and safe sharps handling.
- Critical and semicritical instruments must be cleaned and heat-sterilized between patients; single-use devices are not reused. Surface disinfection is not sterilization.
- Sterilizers require monitoring: mechanical indicators, chemical indicators, and biological spore testing at the interval the regulations and manufacturer require. Logs must be kept.
- Dental unit waterlines must be maintained according to the manufacturer's protocol and monitored for microbial quality.
- OSHA's bloodborne pathogens standard requires a written exposure control plan, hepatitis B vaccination offered at no cost, annual training, and post-exposure evaluation.
Public health dimension
- DPH may inspect a practice on complaint or as part of a licensing or sedation-permit review.
- Breaches can be pursued as unprofessional conduct and as a public health hazard, independent of whether a patient was infected.
- A dentist who knows of a sterilization failure must act promptly, not wait for a recall notice.
Worked example
A biological indicator from Monday's autoclave turns positive. The office has already used the load. The correct response is to stop using the sterilizer, quarantine and reprocess the load where possible, notify affected patients per protocol, document the event, service the unit, and retest with three consecutive negative biological indicators before returning it to service. Simply rerunning the cycle and saying nothing is both an infection-control failure and a records failure.
Traps that cost marks
- Equating disinfection with sterilization.
- Relying on chemical indicators alone as proof of sterilization.
- No written exposure control plan or missing staff training records.
- Failing to document monitoring and corrective action.