Protocol of use - suction systems

Protocol of use - suction systems

Suction systems play a fundamental role in controlling the surgical environment in dental procedures by efficiently evacuating fluids and aerosols. If not properly maintained, these devices can become vectors for cross-contamination, exposing both patients and practitioners to serious biological risks. Thorough and regular disinfection of suction systems is therefore essential in preventing healthcare-associated infections (HAIs).

An underestimated microbiological risk

Suction lines provide ideal conditions for bacterial biofilm formation due to humidity, stable temperatures, and liquid stagnation. These biofilms may harbor pathogenic microorganisms such as Pseudomonas aeruginosa, Legionella pneumophila, or Mycobacterium spp., which often exhibit strong resistance to standard disinfectants.

According to the recommendations of the Haute Autorité de Santé (HAS) and guidelines from the French Dental Association (ADF), cleaning and disinfection must be performed systematically—at least twice daily, and ideally between each patient, especially in implant surgery where asepsis is critical.

Recommended disinfection protocol

An effective disinfection routine is based on three complementary steps:

1. Preliminary rinsing

Before disinfection, flush the suction lines with cold water for at least 2 minutes to remove organic debris and avoid any chemical interaction with disinfectants.

2. Enzymatic cleaning

Using an enzymatic cleaner helps dissolve organic matter (blood, saliva, tissue) and prepares surfaces for efficient disinfection. The cleaner should circulate through the entire system for 5 to 10 minutes.

3. Chemical disinfection

This step involves circulating a broad-spectrum disinfectant (bactericidal, fungicidal, virucidal—including against enveloped viruses like SARS-CoV-2). The solution must be non-foaming, material-compatible, and have a contact time as specified by the manufacturer (typically 10 to 30 minutes).

Stabilized hydrogen peroxide and quaternary ammonium compounds are commonly used for their effectiveness against biofilms.

Daily and weekly maintenance

In addition to daily disinfection, a weekly deep-cleaning routine is recommended:

Use appropriate brushes to manually clean suction tips and filters

Inspect tubing regularly to prevent blockages

Disinfect cuspidors and separation filters

A traceability log—whether digital or manual—is strongly advised to ensure compliance with ANSM standards and accreditation requirements.

Best practices

Never mix different disinfectants

Always follow correct dilution and contact times

Prefer suction of the solution through the tubing rather than soaking

Wear personal protective equipment (gloves, goggles, mask) during maintenance

Sur le sujet

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