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Clarendon Dental Practice 

The fallow time due to the Corona virus continues to cause huge problems for dental practices. My wife and I are running a busy 4 surgery private practice in Southsea. During the lockdown we quickly realised that something had to be done about the 60 minutes fallow time.
For everyone in the dental team it is a huge challenge when you have to consider the fallow time after each AGP treatment, especially for the reception team who is used to making appointments wherever there is a gap in the clinicians diary.

We started reading articles and researching for a way around this. The common answer would be air filtration with HEPA filters combined with/or hydrogen peroxide vapor/hydrogen peroxide dry mist. I contacted a good friend of mine who is a civil engineer for advice. After some calculations he quickly dismissed the air filtration technique as taking a very long time. But more importantly you are not really sure that the virus has actually been inactivated. The hydrogen peroxide with its bleaching effect and damaging to surfaces would quickly cause a refurbishment of the surgery. The answer was UVC/UVGI (ultra violet germicidal irradiation).

Luckily the Coronavirus is rather easy to kill. With its thin membrane the energy needed to inactivate it is rather small. UVC will target the DNA or RNA and inactivate any bacteria, viruses and fungus. So even for other viruses like the seasonal flu the UVC is very effective. The technique is not new, having been around for over 100 years but never really got popular since producing ozone which has a very bad odour . With recent modern technology the negative effect of producing ozone has now been eliminated. Therefore, hospitals are now using UVC more and more for germicidal cleaning, our water is being cleaned this way and lately the New York underground has started using this.

So after collecting and processing all this information UVC really got us interested. Looking at different options we now have a 1000W UVC device which will germicide the Corona virus in 2 x 2 minutes (2 different positions in the surgery). Further, it can easily can be moved between surgeries on the same floor.

Investment wise this is really a no brainer. The lifespan is at least 8000h and since only 4 minutes needed after high risk AGP we are using it less than 1h/day. So this device will probably last until I retire. However, even after the Corona virus we will keep using this for keeping our staff and patients safe. What I probably would like to look in to is to have UVC built into our surgeries when being refurbished/modernised.

Skjalg Eirik Johnsen – Owner

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