heat can kill HIV on dental tools.
the Associated Press
chemical disinfectant used on some medical and dental devices
can fail to kill the AIDS virus, posing a potential risk of
infecting patients, a study suggests.
found that in the laboratory, the disinfectant did not kill
the AIDS virus in blood lodged in lubricants commonly used in
dental equipment and in medical devices called endoscopes,
which are inserted into the body to allow an interior view.
of the devices has ever been shown to be the cause of HIV
transmission from patient to patient, said researcher David
Lewis, a microbiologist at the University of Georgia in
survived in germ killer In the study, published by Lewis and
another researcher in the September issue of the journal
Nature Medicine, the AIDS virus survived after the
contaminated lubricants were soaked for two hours in a
powerful germ killer called glutaraldehyde.
said the study amphasizes the need to sterilize dental
equipment at extremely high temperatures, as recommended by
the federal government and the American Dental Association. He
also said the standards for decontaminating endoscopes should
Dr. David Fleisher, past president of the American Dental
Association said current decontaminating procedurs are
he said, the experiment failed to mimic all the steps of the
decontamination procedure used on gastrointestinal endoscopes.
than 90 percent of American dentists use heat sterilization,
said Chris Martin, a spokesman for the American Dental