Enamel
(medium power)†
|
69.09±9.86
72.6
(53.16-87.47)
|
46.84±3.85
46.9
(41.12-53.17)
|
35.26±4.39
33.59
(30.34-43.23)
|
<0.001
|
Enamel
(maximum power) †
|
97.75±10.82
98.83
(75.92-115.93)
|
70.23±7.05
69.2
(62.02-84.47)
|
50.93±7.26
47.48
(42.61-66.83)
|
<0.001
|
P** |
0.001 |
0.002 |
0.001 |
|
Exposed root surface
(medium power) †
|
102.9±18.95
100.02
(79.61-139.75)
|
51.48±5.14
53.01
(42.05-59.73)
|
65.37±10.54
65.3
(38.4-79.41)
|
<0.001
|
Exposed root surface
(maximum power) †
|
134.55±24.03
140.12
(85.48-168)
|
72.32±5.51
71.88
(61.9-80.96)
|
70.67±12.47
71.92
(42.32-87.04)
|
<0.001
|
P** |
0.001 |
0.002 |
0.021 |
|