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Diagnostics, Methodologies and Instrumentation
, Microbiology
by ruth on July 17, 2007

The study, conducted by researchers in Austria, credits the development of miniaturized, flexible fiber tips for allowing the laser to be used in endodontic (root canal) treatment.
Dr. Ulrich Schoop and a team of researchers in the dental school at the University of Vienna used 60 extracted human teeth with one root each to test the effects of laser irradiation on root canals using an erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser.
Dr. Schoop and colleagues inoculated the root canals with one of two types of bacteria (Enterococcus faecalis and Escherichia coli) and then irradiated the canals using either a 1- or 1.5-watt power setting.
The team found that the laser reduced the amount of E. coli at the lower power setting and reduced it to below the detection level at the higher setting. It also was effective in eliminating E. faecalis.
The research study was published in the July issue of The Journal of the American Dental Association (JADA).
Find more details from the full report.
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