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Infection control and proper sterilization are essential in the dental office to protect both patients and providers from the spread of infectious diseases.

Every instrument and surface can harbor harmful bacteria, viruses, and fungi if not properly cleaned and disinfected.

By following strict protocols dental professionals help prevent cross-contamination and ensure a safe environment.

Upholding high infection control standards not only meets regulatory requirements but also builds trust with patients and promotes overall public health.

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ADS - Association of Dental Safety (Copyright)

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This powerful video uses visual cues instead of words to highlight the hidden risks of cross-contamination that dental professionals face daily. The video emphasizes the importance of personal protective equipment (PPE), safe work practices, and proper infection control measures to reduce exposure and maintain a safe environment for both patients and providers.

Please share your thoughts after viewing this video.

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Organization for Safety, Asepsis and Prevention

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Proper Donning/Doffing of PPE (Creative Commons Attribution)            

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Properly putting on (donning) and taking off (doffing) PPE isn’t just a routine, it’s your first and last line of defense! Suit up in the right order to prevent contamination, and remove gear carefully to avoid spreading germs.

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4.12 Skills Checklist: Donning/Doffing PPE With a Mask and Face Shield or Goggles – Nursing Assistant

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Review the Sequence for putting on personal protective equipment PDF handout[1] from the Centers for Disease Control and Prevention (CDC) with current recommendations for putting on and removing PPE.

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Wikimedia Commons Infographic         (Creative Commons Attribution-Share Alike)   

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Remember:

Aseptic Wash = 2/30 sec lathers

Should be completed at the start and end of clinic and if hand become soiled

Routine Wash = 30 sec lather

Should be completed with the removal and donning of exam gloves

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Best Practices for Sterilization in Dental     (Public Domain)

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Proper sterilization is the backbone of infection control in dentistry. Following best practices ensures that every instrument is free from harmful bacteria and viruses, protecting both patients and providers. The CDC provides essential guidelines. Stay informed!

Note something new you learned from this reading.

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Instrument classification

Patient-care items are categorized depending on the potential risk for transmission of infection.

Critical‎ items penetrate soft tissue or bone. These items have the highest risk of transmitting infections and should always be heat sterilized.

Semicritical items touch mucous membranes, like the inside of the cheeks or the gums. These items have a lower risk of transmission than critical items. Most semicritical items can (and therefore should) be heat sterilized. If they cannot tolerate heat sterilization, they should be processed using a high-level disinfectant. ‎

Noncritical items only contact unbroken skin. These items have the lowest risk of transmission. In most cases, noncritical items can ‎be cleaned and, if visibly soiled, low-level disinfected.

Safety practices

Before final disinfection or sterilization, always treat instruments as though they are contaminated.

Handle contaminated instruments carefully.

Minimize handling of loose contaminated instruments during transport.

Carry instruments in a covered container that is puncture-resistant and leak-proof.

Wear appropriate personal protective equipment when handling and reprocessing contaminated items or equipment.

Wear a face mask, eye protection or face shield, and a gown or jacket to protect against splashes.

Cleaning

Cleaning is the basic first step in all decontamination processes. Cleaning removes debris and organic contamination from instruments. Blood, saliva, and other contamination can cause the disinfection or sterilization process to fail if it is not removed.

Debris can be removed from an instrument in several ways. Dental health care personnel may scrub the instrument manually with a surfactant or detergent and water. Dental health care personnel may also use automated equipment (e.g., ultrasonic cleaner, washer-disinfector) and chemical agents. Using automated equipment can be more efficient and safer than manually cleaning contaminated instruments.

If manual cleaning is performed:

Use work practice controls to reduce the chance of injury from sharp objects.

Never reach into trays or containers holding sharp instruments that cannot be seen, such as a sink of soapy water.

Use a long-handled brush to keep the scrubbing hand away from sharp instruments.

Wear puncture-resistant, heavy-duty utility gloves.

After cleaning, instruments should be rinsed with water to remove chemical or detergent residue. Take care to minimize splashing.

Packaging

After cleaning, instruments should be allowed to dry thoroughly before they are packaged, wrapped or otherwise contained. Wet instruments can compromise the packaging material's integrity and ability to maintain sterility. Once dry, instruments should be inspected and then wrapped, packaged, or placed into container systems before heat sterilization. Packaging materials allow for penetration of the sterilization agent and maintain sterility of the processed item after sterilization.

Dental health care personnel should follow the manufacturer's instructions for packaging patient-care items. This includes following instructions for the item being sterilized, the packaging, and any sterilization equipment being used.

Labeling

Before placing packaged instruments in the sterilizer, at a minimum, include the following information on the label:

Sterilizer used

Cycle or load number

Date of sterilization

Expiration date, if applicable

This information helps dental health care personnel retrieve items in the event of an instrument processing or sterilization failure.

Sterilization process

The majority of patient-care items in dentistry are heat-tolerant and therefore should be heat sterilized.

Follow the manufacturer's recommendations for sterilization times, temperatures, and other operating parameters for all equipment and supplies used during reprocessing. This includes correct use of containers, wraps, and chemical or biological indicators.

If the manufacturer's instructions for use are not clear, contact the manufacturer for assistance.

Storage

Ideally, sterile instruments and supplies should be stored in covered or closed cabinets. They should not be stored under sinks or in other places where they might become wet.

Storage practices for wrapped sterilized instruments can be either date- or event-related. For date-related shelf-life practices, sterilized packages are expiration-dated and used on a "first in, first out" basis. Event-related shelf-life practices recognize that the product should remain sterile indefinitely, unless an event causes it to become contaminated (such as torn or wet packaging).

Dental health care personnel should inspect packaging of sterilized instruments before opening and use to ensure the material has not been compromised (wet, torn, or punctured) during storage. If a package has been compromised, the contents should be reprocessed-that is, cleaned, packaged, and heat-sterilized again-before patient use.

Unwrapped Instruments‎

Special considerations

The use of heat-sensitive semicritical items that must be processed with liquid chemical germicides is discouraged. Heat-tolerant or disposable alternatives are available for the majority of such items.

If heat-sensitive instruments must be used, they can be sterilized or high-level disinfected by soaking them in a liquid chemical germicide cleared by FDA as sterilants.

However, these powerful chemicals are highly toxic and manufacturer instructions-for example, regarding dilution, immersion time, temperature, and disposal-and safety precautions for using chemical sterilants or high-level disinfectants must be followed precisely.

Education and training

This video, from CDC's Foundations: Building the Safest Dental Visit training, describes the workflow pattern for a sterilization area that ensures devices and instruments clearly flow from high-contamination areas to clean and sterile areas.

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Best Practices for Sterilization in Dental Settings

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Details steps for reprocessing instruments to ensure safe reuse of contaminated patient-care items.

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Biological indicators (BIs) are essential tools for ensuring that sterilization processes are working effectively. These indicators contain highly resistant bacterial spores, which help confirm whether sterilization conditions were met.

Why are biological indicators considered the most reliable method for monitoring sterilization?

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Different biological indicators used in dentistry

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Infection Control and Sterilization            (Copyright)

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The ADA provides essential guidelines on infection control and sterilization to ensure the highest level of safety for both patients and dental professionals. Following ADA recommendations helps maintain a clean, compliant, and safe dental practice.

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These resources help dental offices implement a number of precautions to prevent disease transmission in the office.

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The Difference Between Cleaning, Sanitizing, Disinfecting, Sterilizing (Copyright)

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Please watch this video and complete the quiz.

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The Difference Between Cleaning, Sanitizing, Disinfecting, Sterilizing (Dental Infection Control)

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Edpuzzle video lesson. Make any video your lesson. Take a video and crop it, add your voice or embed questions at any point.