Hepatitis C Infections May Come From Routine Dentistry

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Hepatitis C Infections May Come From Routine Dentistry

By Kate

The Scotsman July 25, 2001

Thousands of people infected with the life-threatening hepatitis C virus

may have caught it during routine dental treatment.

Health campaigners warned that current practices in dental surgery,

including the way tools are sterilized, may not be rigorous enough to

remove the risk of transmission of the highly infectious virus between

patients.

Although intravenous drug use is the most common method of transmission,

health workers say dental practices could be the source of infection for a

" substantial number " of the 38 percent of sufferers for whom the source of

infection is not known.

In Scotland, 10,000 people are known to be infected with the disease, which

can cause liver disease and cancer and is 100 times more infectious than HIV.

But because sufferers can live for 20 years before showing any symptoms,

experts believe that a further 25,000 Scots are unknowingly infected.

Jeff Frew, the secretary of Capital C, an Edinburgh-based support group for

sufferers, said many people do not know how they became infected and he

believes there is a risk of infection from dentists' tools.

His claims have been backed by Nigel , the chief executive of the

British Liver Trust, who said the risk of infection from dental surgeries

" could not be ignored " .

Mr. Frew said " Many of our hepatitis C positive clients do not fall into

any of the risk categories for catching the infection.

" Dental treatment is the only time when members of the public come into

contact with blood and there's a huge throughput of patients receiving

dental treatment every day. "

He added: " Although dentists sterilize their tool-heads, there is a risk of

infection from the actual tools themselves, from the machinery that drives

the tools. Blood could gather behind the drive mechanisms of tools, which

could lead to transmission.

" In order for there to be no risk of infection, dentists would have to have

two or three spare sets of tools in order to ensure all equipment was

sterilized properly, and at the moment that is not the case.

" This is a public health concern of immense proportions. "

According to figures from the ish Center for Infection and

Environmental Health, 58 per cent of hepatitis C sufferers are known to

have injected drugs. About 7 percent are thought to have picked up the

virus during surgery, from blood transfusions, from sex with an infected

partner or from receiving tattoos.

For 38 percent of sufferers, no information on the source of infection is

available and campaigners believe that some people in this category may

have been infected during dental treatment.

Mr. Frew added: " There are people who are infected who were not injecting

drug users, who have not had blood transfusions, who do not have tattoos or

pierced ears and who have only ever had one sexual partner. They must have

got it from somewhere, but at the moment we do not know what the other

sources are. I believe that most of them caught it during dental treatment,

or at least the potential is there. "

Mr. said: " One problem lies with the mechanical dental handpiece

which sucks fluid, including blood and other matter, from the mouth . After

treatment, if the dentist adheres to guidelines, it is flushed through very

rigorously and left to rest for some time.

" It would be possible to catch hepatitis C in this way if the equipment is

not rigorously cleaned and sterilized. There's always a distinct

possibility, especially if the dental practice session is very busy. "

However, Mr. Frew believes the day-to-day practice of dentists should be

reviewed. He said: " It is up to the dental profession to prove that there

is no risk and until they do we must assume that there is a risk. We can

trust dentists to adhere to guidelines, but how can we keep track of how

they carry out their day-to-day surgeries? "

The Scotsman July 25, 2001