Dental practices: how to use UVC rays safely?

The medical field is the industry at highest risk for the contamination and spread of viruses, such as Covid-19. Of all the technologies considered to protect staff and patients, UVC ray decontamination is particularly valued for its speed of execution and its efficiency.

How is virus transmission possible in dental practices? How do you protect users from UVC rays? Can this damage professional equipment? We answer all of these questions in this article.

Virus transmission in dental practices

Because Covid-19 can be directly transmitted from person to person through respiratory droplets, the data indicate that the virus circulates through contact and fomites, that is, by contaminated objects.

Indeed, although some cases are severe, a good majority of patients are asymptomatic and therefore are unaware of it. Their incubation period has been reported to be about 1 to 14 days,which is long enough to cause further and unintentional contamination. (1)

Risks of contamination during dental practice

Airborne transmission of this virus makes the probability of contamination very high. It has become the main concern for dental practicioners, as it is in fact difficult to avoid the production of large quantities of aerosols in a trade where the patient’s saliva and blood is systematically in contact with professional dental equipment.

When dental devices work in the patient’s mouth, a large amount of aerosols is generated and remains suspended in the air before being deposited on surfaces or absorbed through the airways.

It has been shown that when a piece is infected with the virus, the virus can remain present on it for up to 20 days. It could also remain longer in rooms that are more humid. Therefore, keeping the practice clean and relatively dry could decrease the persistence of the Covid-19 virus. (2)

uvc rays dental practices

How do you protect users and professional equipment from UVC rays? ?

The implementation of disinfection measures to combat the spread of highly infectious diseases now becomes paramount.

To disinfect dental practices before and after patient care, many protocols have been developed, such as:

  • Natural ventilation of practices to ensure air renewal at least 6 times per hour;
  • Air purification to clean the room of aerosols;
  • UVC ray decontamination of practices.

The latter was by far the most conclusive due to its effectiveness against many microbial and viral agents in various environments. (3)

Protecting users from UVC rays

The principle of UVC ray decontamination is to eradicate in record time all viruses, bacteria and other pathogenic germs found on surfaces and in the air. Their effectiveness is such that the use of UVC rays must be done according to a strict procedure and only with professional devices intended for this purpose.

To avoid irradiation caused by UVC rays, PuriTechs devices possess a start-up countdown as well as a presence detector to allow the user to leave the area to be treated on time. Moreover, the addition of a mobile application compatible with the devices allows you to follow the process and manage it remotely without having to make direct contact with the ultraviolet germicidal lamps.

Preserving professional equipment from UVC rays

Because decontaminating a space does not mean degrading the environment, UVC ray decontamination is estimated by a UVC dose calculator, which enables it to use the exact and ideal dose to eradicate viruses from surfaces and from the air without degrading the professional equipment present in the area to be treated.


For more information regarding the risks of UVC rays, we have a FAQ section available to answer your questions.

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