Biomedical Engineering Reference
In-Depth Information
Fig. 4.21
Variation in the
mean friction coeffi cient with
erosion time [
49
]
0.3
0.2
0.1
0.0
0
10
20
30
Erosion time/min
a
b
8.0
0.8
0.6
6.0
0.4
4.0
0.2
2.0
0.0
0.0
0
10
20
30
0
10
20
30
Erosion time/min
Erosion time/min
Scratch depth
Scratch width
Fig. 4.22
Scratch depth and width on enamel surface subjected to different erosion times [
49
]
b
a
Enamel coated
with nail varnish
Outer enamel
Intermediate enamel
Interior enamel
Enamel
Plastic
the surface of specimen
the location of testing
Fig. 4.23
Schematic representation of specimen preparation [
56
]
