|
Conditions and
treatment
Timeb
Mean log
killing ± SE (no. of expts)
Tubing
Screws
Bursc
Avgd
Sterilization
Water
10
h
0.25 ± 0.09 (8)
0.50 ± 0.09 (8)
0.38 ± 0.06 (16)
Cupric ascorbate
10
h
2.62 ± 0.20 (6)
3.24 ± 0.17 (8)e
2.93 ± 0.14 (14)
Exspor
10
h
3.47 ± 0.30 (4)
3.95 ± 0.30 (4)
3.71 ± 0.16 (8)
Cidexplus
10
h
3.28 ± 0.25 (4)
3.50 ± 0.25 (4)
3.39 ± 0.27 (8)
Renalin
11
h
4.34 ± 0.37 (4)
5.16 ± 0.30 (6)
4.75 ± 0.24 (10)
Wavicide-01
10
h
3.81 ± 0.34 (4)
3.44 ± 0.34 (4)
3.62 ± 0.24 (8)f
Disinfection
Water
30
min
0 (5)
0 (6)
0 (5)
Cupric
ascorbate
30
min
2.36 ± 0.22 (5)
3.29 ± 0.20 (6)e
1.51 (5)
2.83 ± 0.13 (11)
Expor
3
min
3.36 ± 0.27 (5)
4.15 ± 0.30 (6)e
0.49 (5)
3.76 ± 0.20 (11)
Cidexplus
20
min
3.07 ± 0.22 (5)
4.00 ± 0.21 (6)e
2.43 (5)
3.54 ± 0.06 (11)
Cavicide
10
min
0.73 ± 0.29 (5)
0.80 ± 0.27 (6)
0.22 (5)0.76 ± 0.20 (11)
Clorox
5
min
1.95 ± 0.39 (5)
1.66 ± 0.35 (6)
0.40 (5)1.81 ± 0.26 (11)
Lysol
10
min
0.62 ± 0.18 (5)
0.18 ± 0.17 (6)
0.33 (5)0.40 ± 0.12 (11)
Wavicide-01
10
min
1.63 ± 0.40 (3)
0.63 ± 0.28 (6)
0.11 (3)1.13 ± 0.24 (9)f
a
Spore survival was calculated by adding
the numbers of spores recovered in fractions a, b, and c of the test
described in the text. Log of spore killing was calculated as the log
of the number of spores surviving treatment with water for 30 min minus
the log of the number of spores surviving after each treatment.
b
Incubation was done for the times specified
by the manufacturer's label instructions, generally consisting of a
short time (on the order of minutes) for disinfection and an extended
time (10 to 11 h) for sterilization.
c
Metal flaking and corrosion products made
spore killing on burs imprecise, and the data were omitted from further
analysis.
d
Average of spore killing by each disinfectant
in tubing and screws.
e
Significant difference (P > 0.95) between tubing and screws for the same treatment.
f
Significant difference (P > 0.05) between conditions for sterilization and disinfection for
the same disinfectant.
|
Copyright © 2009 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»