American Dental Tech Blog

Practice Tips #34: Dental Equipment Routine Maintenance

In previous issues of Practice Tips we’ve discussed the importance of routine maintenance to keep your equipment running well. We’ve had dedicated issues on Handpieces, X-Ray processors, and Sterilizers.

This month, we’re going to run through everything in the office on a daily, weekly, monthly, quarterly, and annual basis to give you a master check-list for office-wide maintenance.

Naturally, this list should not be considered all-inclusive and there will be variations depending on what equipment you use.


At the beginning of the day:

  • Turn on compressor, vacuum and main water lines (you should have a solenoid on your water).
  • Check fluid levels in sterilizer and x-ray processor (topping off if necessary) and then turn them on.
  • Run a cleaning sheet through your processor (if such is available for it).
  • Turn on delivery systems and open oxygen and nitrous tanks (if you have a central system).
  • Check ultrasonic cleaner solution.
  • If using self-contained water systems and air purging every night, run handpieces and depress water buttons on air/water syringes to establish water line pressure.
  • Refill water bottles of self-contained systems.
  • Verify previous day’s computer back-up and install next generation of media (i.e. the next drive/cartridge etc. in sequence).

At the end of the day:

  • Clean the sterilizer door gasket with a soft cloth and mild (non-antibacterial) liquid soap.
  • Clean out or change chairside vacuum traps and run vacuum system cleaner through all vacuum lines. Be certain to securely replace the lid of the trap after checking screen on trap.
  • Empty waste bottle/tank on sterilizers equipped with one.
  • Turn off all equipment as above – delivery systems, oxygen and nitrous tanks, sterilizer, processor, compressor, vacuum, and main water line. If using a Dent-X processor, remove the cover and slide the covers of the solution trays to the side allowing vapors to escape.
  • Dry water lines by purging with air (if using self-contained water systems).


  • Clean interior and exterior of sterilizer(s), including reservoir. Check autoclave safety valve by pulling on the ring with a pliers (it should spring back).
  • Check sterilizer filters and perform a spore test.
  • Verify sterilizer is level.
  • Check chairside trap screens and lid o’rings for wear and replace if necessary. Be certain to securely replace the lid of the trap afterward.
  • Check and replace or clean out central vacuum and main water line filters.
  • If present, check amalgam separator.
  • Disassemble and lubricate vacuum valves (HVE and SE).
  • Clean ultrasonic cleaner.
  • Clean operating light reflectors and lens shields (make sure reflectors are cool first).
  • Check oil on oil-lubricated compressors and drain compressor tank. An auto-drain can also be installed on your compressor to drain as needed automatically.
  • Clean processor racks according to manufacturer’s instructions. You may need to let them dry over the weekend as well.
  • Empty and clean out bottles of self-contained water systems.
  • Clean boiling chamber of water distiller


  • Perform extended cleaning of x-ray processor per manufacturer’s recommendations. Special cleaning solution may be required as well.
  • Check/clean plaster trap
  • Check emergency resuscitation equipment
  • Lubricate joints in operating lights, sterilizer door hinges, air/water syringe buttons, & other similar items around the office.
  • Clean Pan or Ceph x-ray screens with a screen cleaner.
  • Using heat-resistant PPE, check sterilizer safety valve while under pressure (see Sterilizer Maintenance) & check sterilizer door for plumb.
  • Check air and water filters in junction boxes.

Master On/Off Valve #05-558


  • Check filters on compressor and central vacuum.
  • Check compressor oil (if oil lubricated)
  • Check tubing on delivery systems, nitrous, and vacuum as well as handpiece gaskets and/or coupler o’rings for signs of wear.
  • Clean model trimmer wheel and drain lines.
  • Lubricate drive chain on Dent-X processors.
  • Check hydraulic fluid of patient chair.
  • Check life of computer battery back-up (UPS).
  • Test smoke alarms.
  • Verify computer back-up by restoring from a back-up.


  • Change sterilizer door gasket, bellows and fill filters.
  • Change oil (if oil lubricated) of compressor.
  • Check power cords for all electronic equipment around the office and replace any that are frayed or worn.
  • Have fire extinguisher(s) inspected.
  • Observe a complete sterilization cycle looking for any signs of malfunction such as a steam leak.
  • Conduct staff OSHA training
  • Review emergency procedures with staff- how to handle patient emergencies as well as what to do in case of fire etc.
  • Have X-ray equipment inspected, calibrated, and certified (requirements vary may be as infrequently as once every 5 years)

In general:

  • Be observant. Note any equipment which exhibits unusual behavior such as loud or abnormal noises or an unusual appearance/discoloration.
  • Keep owner’s manuals for all equipment in a secure place.
  • Consult owner’s manuals for manufacturer’s recommended maintenance and supplement the list above accordingly.
  • Check with local authorities for your requirements. Some things (for example spore tests) may have a different frequency requirement in your area. We have attempted to list such things at the most common interval but there can be wide variation.
  • Be aware of seasonal tendencies for extremes of heat, cold, & humidity and the effect these extremes can have on specific pieces of equipment. For example, replacing compressor dryer desiccant is commonly required in the summer months.
  • It may be helpful to have primary equipment wired to a master switch to simplify turning on in the morning and off at night (just one switch to throw).
  • Be mindful of critical equipment and always have spares of the following on hand:
  1. Light bulbs for operating lights and curing lights
  2. Filters for air and water lines
  3. Replacement screens/traps for central vacuum
  4. Fuses for chairs, sterilizer, processor, etc.
  5. Hydraulic fluid (if you have hydraulic chairs)
  6. Compressor oil
  7. Have a back-up plan in case of failure of compressor, vacuum or sterilizer. Having a smaller secondary unit on hand that can be “hot-swapped” temporarily can keep you up and running.
  8. Have a contingency plan in case of failure of computer system.

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11 thoughts on “Practice Tips #34: Dental Equipment Routine Maintenance”

  • Mark

    Excellent comprehensive checklist. Thank you for concentrating on sterilizer upkeep. The mouth is the dirtiest part of the human body and having a sterilizer that has been adequately maintained, in my opinion is the core of a safe dental office.

    • TechGuru

      Thanks for reading and commenting!

      We agree on the importance of a properly functioning sterilizer to the dental office. Proper maintenance is the first step in keeping your sterilizer running well. Without it, handpieces, instruments, or none of your other vital equipment can be properly sterilized.

      Have you seen some of our other posts on sterilizers? We'd love to hear what you think!

  • [...] Dental supports this initiative and reminds you of the importance of routine maintenance to keep your units working well (and free from [...]

  • allen

    perfect description. but i need to ask what is the importance of the "solenoid"?
    i would appreciate any help on this matter
    thank you

    • TechGuru

      Thanks for the thoughtful question. A solenoid allows you to shut the water off to the entire office when it is closed. Tubing inside a dental unit can burst, pipes can leak, plumbing fixtures can fail, all of which can lead to flooding and thousands of dollars in damage. Water can also damage computers and other office equipment.

      Damage from flooding could potentially result in temporary closure costing in lost production as well.

      If your office is on an upper floor of a high rise, you can potentially affect neighbors as well potentially with catastrophic results.

      If you shut the water off to the entire office you can avoid damage from a sudden and unexpected failure of your water lines. And minimize any damage. A solenoid can quite simply save you thousands. It's very cheap property insurance.

      Great question!

  • Beatriz

    Its a great info. How do u flush the nitrous from the oxygen
    /nitrous dental cart

    • TechGuru

      The oxygen and nitrous lines should be separate on your unit so you should never get pure oxygen in the nitrous lines (or vice versa). Your flowmeter should have an oxygen flush switch to switch to pure O2 through the main line and nosepiece, however. Simply activating this control is all you should need to do.

      Consult your owner's manual or speak to the mfr. of your nitrous system for help in identifying the particulars of your unit.

      An O2 flush is a normal part of providing nitrous analgesia and wouldn't really fall under routine maintenance, incidentally.There are some great sources of information on anesthesia including various CE courses you might consider for more information on using nitrous in your office.

  • Candy

    What could happen to your suction/water lines if you never cleaned or changed the traps?

    • TechGuru

      Thanks for the question!

      Your lines could become completely clogged preventing anything from flowing through them if you didn't maintain the traps. The traps catch large solid waste to help prevent it from clogging your lines.

      Maintaining your traps (along with use of an amalgam separator) is also an important part of the ADA's BMP's for keeping amalgam out of the sewer lines.

      Thanks for contributing!

  • Sonia Gallego

    What can happen to a vaccum and compressor if they are run for a period of time without water?

    • TechGuru

      Thanks for the question!

      A compressor doesn't require water, so there should be no concern there.

      If the vacuum is a wet ring pump (uses water to generate vacuum) and you have no water, you can get a catastrophic failure of the pump. Normally, it will just shut down, but the pump can seize, impellers can break, lots of damage can occur to the pump, so keep a good eye on your water filters and your water lines in general.

      If you have a dry vacuum (like our Steri-Dent Central vac) it doesn't use water, so there's no concern if you lose water with one of these systems.

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