Unit Oral

How to prevent and control water contamination on dental unit using UNIT-ORAL Water Testing.

Potential source of contamination
Poor microbiological Dental Unit Water (DUW) quality associated with generated aerosols during dental procedures, could be an important source for transmission of pathogenic bacteria.

Dental chair units are equipped with a flexible, plastic tubing that supply water to all dental instruments (air/water syringe, turbine, rinsing equipment). Biofilm and bacterial contamination are often observed in the complex dental unit.

Microbial growth
Bacterial numbers per ml in DUW can reach several millions overnight. Opportunistic bacteria such as Legionella pneumophila and Pseudomonas aeruginosa have previously been revealed in biofilms. In addition, Staphylococcus sp., isolated from DUW, could be resistant to several antibiotics.

Legionella pneumophila
Major agent of Legionnaire’s disease (LD) and Pontiac fever.

The estimated incidence rate of LD in the European Union (EU) is 100 per million. Approximately two thirds of reported cases of LD in the EU are community-acquired.

Recent studies have shown that Legionella is one of the most common agents of community-acquired pneumonia in Germany. A recent study has reported a transmission of L. pneumophila from a dental unit to a patient, who died from septic shock. The role of the dental unit as source of infection was proved by molecular fingerprinting techniques.

Legionella pneumophila

is a thin, aerobic, pleomorphic, flagellated, non spore-forming, Gram-negative bacterium of the genus Legionella. L. pneumophila is the primary human pathogenic bacterium in this group and is the causative agent of Legionnaires’ disease, also known as legionellosis. L. pneumophila is a facultative intracellular parasite that can invade and replicate inside amoebae, reservoir that provide protection from environmental stresses, such as chlorination.

Pseudomonas aeruginosa
is a common Gram-negative, rod-shaped bacterium that can cause disease humans. P. aeruginosa is a multidrug resistant pathogen recognized for its ubiquity, its intrinsically advanced antibiotic resistance mechanisms, and its association with serious illnesses – especially hospital-acquired infections such as ventilator-associated pneumonia and various sepsis syndromes. P. aeruginosa typically infects the airway, urinary tract, burns, and wounds, and also causes other blood infections.

Biological analysis accessible to practitioners
Unit Oral: Microbiological analysis of dental unit water.
Quantitative and qualitative diagnosis of bacterial load with the identification of:
Legionella pneumophilia
Pseudomonas aeruginosa
Total flora

Benefits for the practitioner:
Minimize the risk of exposure to potentially pathogenic agents
Create a climate of trust for your staff and your patients
Safe water usage