Environmental Disinfection of a Dental Clinic during the Covid-19 Pandemic.

Release time:2022-03-23 16:37:42    



 The Covid-19 Pandemic has brought heavy pressure to public health worldwide and has brought great challenges to city environmental management.The Covid-19 Pandemic can lead to a higher risk of death in patients with pneumonia, moderate severe respiratory failure, septic shock, and other diseases, especially those with potential medical problems such as chronic respiratory diseases, cancer, cardiovascular diseases and diabetes.The control of biological hazard risk in health care and dental clinic environments represents a critical point in relation to the Covid-19 infection outbreak and international public health emergency.

The purpose of the present review was to evaluate the scientific literature on the no-touch disinfection procedures in dental clinics aiming to limit transmission via airborne particles or fomites using no-touch procedures for environmental decontamination of dental clinics. An electronic database literature search was performed to retrieve research papers about Covid-19 and no-touch disinfection topics including full-length articles, editorials, commentaries, and outbreak studies. About the topic of hospital decontamination, we found different no-touch disinfection procedures used in hospital against highly resistant organisms, but no data were found in the search for such procedures with respect to the Covid-19 Pandemic.

This coronavirus pneumonia has a high percentage,while the great spread of the number of infected cases has caused a lockdown of dental clinical activity and poses a significant risk to personnel dental health care (DHCP) and dental patients.Transmission of SARS-CoV-2 occurs mostly by respiratory droplets over a close distance. It is an aerosol-transmissible disease which can spread when infected people talk, cough, sneeze, or disperse mouth and nasal fomite secretions into the air. In fact, the exhaled air of infected humans is one of the prime sources of ambient contamination by pathogenic microorganisms. Improving ventilation of health spaces will dilute and clear out potentially infectious aerosols .Viruses or bacteria take flight and remain in the air so that other people can breathe the airborne pathogenic organisms, or these can land on other surfaces. So, for this reason, it is important to implement respiratory infection control with a good prevention strategy in dental practices and health care offices.The air environment of dental clinics is also very important.

 In fact, humans have a high-frequency face-touching habit with an average of 23 times in 1 hour, and hands are a common vector for the transmission of health care-associated infections . When air containing pathogenic airborne microorganisms is inhaled by a human, it can cause tuberculosis or Legionella, mycoplasma, or influenza, which are great problems in dentistry practice. In dental practices, droplets from infected patients can contaminate the equipment and surfaces with the risk of transferring microorganisms from contaminated surfaces to other patients through hand contact.The high-touch equipment surfaces surrounding the patient increase the risk of contamination of these surfaces.Furthermore, aerosolized virus, fungi, or bacteria in health care facilities can cause infection in the dentistry equipe and all health care workers.So, it is very important that we adopt a proactive infection control approach to sanitation in the dental clinic between one patient and another to minimize the risk of transmission. We can use the disinfection agents through contact, but this procedure is too long and ineffective, because it is impossible to reach all hidden surfaces.When touching these devices, microbial agents can be transferred to other instruments. It is very difficult to disinfect the surface of medical devices, and there are still a large number of pathogenic sources in the air. In order to better solve this problem, dental clinics consult the research data of virus related materials and refer to the measures taken by relevant hospitals. In order to prevent and control the rapid spread and spread of the virus, non-contact disinfection methods are considered to solve the problems of virus pollution on the surface of dental instruments and equipment and air pollution in clinics.


 In addition, aerosol generating during piezosurgery procedures.Particles of different sizes. Smaller droplets (5 μ) may remain suspended for a long time and can settle on all environmental surfaces such as drawer knobs, light handles, unit switches, dental radiograph equipment, reusable containers of dental materials, drawer handles, and dental chairside computers and when these devices are touched, microbial agents can be transferred to other instruments. Manual disinfection of medical device surfaces is very difficult.Many harmful viruses will remain in the air.

 Gaseous ozone is used for environmental disinfection . It has antimicrobial and antiviral properties inclusive of Ebola although its mechanisms of action are not well understood .The device generates ozone and increases the ozone gas peaking at 20–25 ppm and includes ozone’s known corrosive properties . This technology is more efficient when there is low relative humidity . It only takes 3-4 ppm to reduce all viruses and bacteria , but at 25 ppm, it is a disinfectant, while at 50+ ppm, it sterilizes surfaces. Ozone can damage the lungs when inhaled, a recent study showed in a rat model that increased methylation of the apelin promoter downstream of DNA damages the lungs, causing the development of pulmonary edema .Therefore, it is not a safe and reliable method.

 However, your dentist works behind the scenes to provide a sterile environment. Sterilization and disinfection are important for your health as well as the health of the dental staff. Learn some of the key benefits of infection control.Many people are surprised by all the work that goes on behind the scenes at a dental office. When patients go back to the treatment room, the equipment has been disinfected and the office space is clean and sanitized. This provides patients and dental teams with benefits. These benefits are critical when receiving or administering oral care.Infection control is critical for all dentists. Dentists do not want to spread infections in the office, so they take measures to lower the risk. This includes sanitizing instruments and office space. When you go to the dentist, you can rest assured that measures have been taken to protect you when you undergo treatment. These measures are not just in place for the COVID-19 pandemic. Dentists always understand the importance of infection control.(

 During dentistry activity and the use of high-speed drills, droplets that are contaminated with the virus can spread as far as two meters on to exposed surfaces with environmental contamination and these remain infectious on workstation surfaces, medical instruments, etc. at room temperature for up to 9 days. Several studies have found that hygiene quality management in the dental office may be problematic and surface microbial contamination has been found. All environment surfaces can become contaminated with infectious droplets from sprays of oral fluids or from touching them with contaminated fingers.General cleaning and disinfection with chemical or physical agents are recommended for device contact surfaces. It is very important to know material compatibility with physical or liquid chemical germicides. When wiping or scrubbing is used to remove microorganisms, any antimicrobial effect provided by the agent is reduced as there can still be a risk of creating another reservoir for microorganisms in the diluted solutions of the disinfectants themselves. At the same time, the harmful substances in the indoor air of dental clinics are also difficult to eliminate.

In the face of such a severe epidemic situation, it is urgent to equip more professional and effective sterilization equipment. LIVA air deodorizer can remove bacteria and viruses in clinics and hospitals and bid farewell to the traditional sterilization mode.

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