Woman Dies After Contracting Legionnaires' Disease From Dentist's Office
Woman Dies After Contracting Legionnaires' Disease From Dentist's Office
An 82-year-old Italian woman died after she contracted Legionnaires' disease, a severe, pneumonia-like illness, from the water in her dentist's office, according to a case report published in the journal The Lancet.
Scientists who determined the source of the woman's illness, which occurred in February 2011, said during the disease's incubation period the woman only left her home twice to visit her dentist.
When they tested the water in both places, they discovered the bacteria that causes Legionnaires' in the dentist's water line. Water lines carry water from the main water supply to certain devices used during patient care.
While the authors wrote the most common sources of infection are air conditioning systems, hot water systems, spas and fountains, a recent study found dental water lines to be another major source of contamination with Legionella bacteria. Legionella pneumophila is the bacterial strain that causes Legionnaires' disease.
While it was not clear what kind of water line standards were in place in Italy, in the U.S., the American Dental Association (ADA) said infection control standards are very stringent in order to prevent cases like the one in Italy from happening.
"Since the ADA convened a special task force in the mid-1990s focusing on infection prevention, there have been a number of recommendations made to treat the water and keep the number of bacteria down," said John Molinari, the ADA's spokesman on infection control, infectious diseases and allergic reactions.
The ADA recommends that dental water lines contain no more than 500 colony-forming units of bacteria per milliliter of water, the same limit recommended by the U.S. Centers for Disease Control and Prevention.
The ADA also recommends that dentists monitor water quality and maintain a water reservoir that is separate from the municipal water supply, as well as use filters that will keep microorganisms out of the water.
Legionella bacteria is one of the most common types of bacteria found in water.
"Legionella is found in old homes, shower heads and anywhere else there can be stagnant water," Molinari said.
Most dentists take the necessary precautions to protect their water lines from contamination, but Molinari said that the Italian case is an important reminder.
"This report sends the message that it can happen," he said.
That's scary. I just had a nightmare about the dentist the other night. Now I'm rethinking about getting my teeth clean.lol
Quoting Ann7227:That's scary. I just had a nightmare about the dentist the other night. Now I'm rethinking about getting my teeth clean.lol
I know what you mean. For some reason the denist makes me feel uncomfortable, even though he is a great dentist. I often want to have a drink or two before I go.. and I never drink. lol
Oh me too. I'm glad I'm not alone. lol
Quoting tooptimistic:
Quoting Ann7227:That's scary. I just had a nightmare about the dentist the other night. Now I'm rethinking about getting my teeth clean.lol
I know what you mean. For some reason the denist makes me feel uncomfortable, even though he is a great dentist. I often want to have a drink or two before I go.. and I never drink. lol
It's one of the very real risks of keeping water heater temperatures low... apart from not saving any money, and shortening the lifespan of the tank.
I hadn't heard about that disease in a while. I also have a dentist appt. in 2 weeks
This is why I don't go to the dentist as often as I should. Not too long ago, there was a story here about people getting sick because a local dentist wasn't cleaning his tools properly before using them on the next patient. It creeped me out so much I haven't been to the dentist this year.
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- tooptimistic
on Feb. 17, 2012 at 11:52 AM