6. Environment, waterlines, sharps and records
Environmental cleaning
Clean clinical contact surfaces between every patient with the product and contact time specified. A wipe that dries in two seconds has not met a one-minute contact time.
Dental unit waterlines (DUWLs)
Narrow waterlines grow biofilm. Follow the unit manufacturer’s water treatment and flushing protocol: flush at the start of the day and between patients as specified; maintain treatment cartridges on schedule; do not top up bottles with leftover water. Do not use dental unit water for surgery that requires sterile water unless the system is designed and validated for that use.
Impressions and laboratory work
- Rinse immediately to remove blood and saliva.
- Disinfect with the agent and contact time specified for that material.
- Rinse again if the IFU requires it.
- Bag, label, and record disinfection status on the lab docket.
Finished work returning from the laboratory should be cleaned and disinfected before it is fitted.
Sharps and inoculation injury
Discard at the point of use into an approved sharps container. Never overfill past the fill line. After a needlestick: encourage bleeding, wash with soap and water, report at once, and follow the occupational health pathway — hours matter for some exposures.
Validation and records
If a daily autoclave steam-penetration test fails, take the machine out of use until the fault is corrected and documented. Inspectors expect a written policy that matches real workflow, staff competency records, cycle logs, engineer reports, and infection-prevention audit with actions closed out.
Course summary
Safe decontamination is a dirty-to-clean system: standard precautions, the right PPE, cleaning before sterilisation, the correct autoclave cycle for the load, protected storage, controlled waterlines, disinfected laboratory work, and records that tell the truth.
Always follow current national guidance (HTM 01-05 or equivalent) and manufacturer instructions. This e-learning does not replace local equipment training.