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Dental Waterline Microbial Control

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Dental Waterline Microbial Control

Dental waterlines are used for a variety of procedures such as cleaning, cooling, and irrigation. As a result, waterborne microorganisms can develop within dental unit waterlines. Without regular cleaning and disinfection, a layer of microorganisms and, or bacteria can create a biofilm within the tubing and on the surface of the dental unit. Without microbial control, this biofilm formation can become dislodged, enter, and contaminate the water stream.

Putting infection control practices in place, such as regularly testing and maintenance of waterlines can help protect your practice from contamination. We offer a range of infection control products, including Stersil to maintain your dental unit waterlines.

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What is Dental Waterline Microbial Control?

Dental waterline microbial control refers to the measures taken to manage and reduce microbial contamination in the dental unit water and devices. Dental units typically use water in various procedures and dental treatment.

Why Do You Need Waterline Microbial Control in Your Dental Practice ?

Microbial and bacterial contamination in dental waterlines can lead to the formation of biofilm, which is a slimy layer of micro organisms that adheres to the surfaces of the waterlines. This biofilm can harbour bacteria, fungi, and other microorganisms, potentially compromising the quality of water used in dental procedures, and posing a risk to both patients and dental staff.

How to prevent microbial contamination in dental waterlines

To control microbial contamination in dental waterlines, you can use several methods including:

  • Disinfectants and Antimicrobial Agents - These are added to the water used in dental units to control microbial growth. At Initial Medical, we offer a series of dissolvable tablets for daily maintenance and also  Sterisil Straw for a longer-term solution.

  • Water Quality Monitoring - Adhere to guidelines and prevent the spread of infection by using our foot pedal operated clinical waste bins. Our bins also have secure concealed sack holder, keeping your bag movement free whilst in use.

  • Flushing Protocols - help by regularly flushing the waterlines with air or water to remove stagnant water and prevent the buildup of biofilm. This helps maintain water quality and reduce the risk of microbial contamination.

Citrisil Tablets for Daily Maintenance

Citrisil™ & Citrisil Blue™

  • Citrisil™: our standard product, a colourless microbial infection control kit.
  • Citrisil™ Blue: our premium option includes a non-toxic blue additive, designed for easier visual compliance and identification of water levels in opaque bottles.
  • Citrisil™ Shock: our additional dissolvable tablet that kills bacteria whilst helping to maintain waterline hygiene, available in a pack of 10.
Citrisil tablets


  • Eliminates the need to empty bottles, purge, and air-dry lines at night
  • No odour or taste
  • One tablet suitable for 700ml -1L bottles
  • Each pack includes 2 Citrisil™ Shock tablets

Sterisil Straw - Hassle-free microbial control

Using Silver-Ion technology Sterisil® Straw provides a simple and consistent solution to deliver a continual waterline treatment for 365 days eliminating the need for daily maintenance. EPA registered to release the integrated shock treatment automatically. With a very quick initial installation.

sterisil straw


  • Eliminates the need to empty bottles, purge, and air-dry lines at night
  • No odour or taste
  • One tablet suitable for 700ml -1L bottles
  • Each pack includes 2 Citrisil™ Shock tablets

Why is a dental waterline important?

Microbial control in dental waterlines is crucial for several reasons, primarily related to ensuring the safety of both patients and dental practitioners. Here are some key reasons why microbial control in dental waterlines is necessary:

1. Patient Safety

Contaminated water used in dental procedures can pose a risk to patients. Microbial contamination may lead to infections, particularly when water is used in procedures involving open wounds or mucous membranes. Effective microbial control helps minimise this risk and ensures the safety of patients.

2. Infection Prevention

Dental procedures often involve the use of water for irrigation, cooling, and cleaning. If the water used is contaminated with bacteria, fungi, or other microorganisms, there is a risk of introducing infections. Microbial control measures help prevent the transmission of infections in dental settings.

3. Biofilm Prevention

Dental waterlines are susceptible to the formation of biofilm, which is a slimy layer of microorganisms that adheres to the surfaces of the waterlines. Biofilm can harbour bacteria and other pathogens, leading to persistent contamination. Microbial control measures, such as regular flushing and disinfection, help prevent the formation of biofilm.

4. Instrument Sterilisation

Dental instruments that come into contact with water from dental units need to be sterilised. Contaminated water can compromise the effectiveness of instrument sterilisation processes. Microbial control in dental waterlines supports overall infection control measures in the dental practice.

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