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COMPARISON OF DIFFERENT METHODS OF EXCAVATION CONTROL FOR MINIMALLY INVASIVE CARIES TREATMENT
Table 3. Color characteristics of control point in different groups
HSB Group
1 group affected with the visual and tactile method 40.63 ± 1.768.00 ± 5.242 group healthy with the visual and tactile method 83,63 ± 1,92 4 group healthy with the fluorescent method 3 group affected with the fluorescent method
PS T-test
H( Hue) 0
S( Saturation) %
B( Brightness) %
n
Mean ± Std. Dev
Mean ± Std. Dev
Mean ± Std. Dev
8 40.25 ± 4.20 8.25 ± 4.74 83,88 ± 5,89
8 39.00 ± 5.39 3.75 ± 3.11 77,38 ± 4,66
8 40.88 ± 4.22 6.63 ± 2.26 77,5 ± 4,11
t 1, 2
= 0.52( p = 0.61) t 2, 3 =- 0.81( p = 0.43) t 1, 3
=- 0.20( p = 0.82) t 2, 4 =- 0.77( p = 0.45) t 1, 4
=- 0.30( p = 0.77) t 3, 4 =- 0.15( p = 0.88) t 1, 2
= 2.25( p = 0.04) t 2, 3 =-1.97( p = 0.07) t 1, 3
= 0.10( p = 0.90) t 2, 4 =-2.12( p = 0.05) t 1, 4
= 0.87( p = 0.40) t 3, 4 = 0.68( p = 0.57)
t 1, 2
= 2.45( p = 0.02) t 2, 3 = 3.51( p = 0.00)
t 1, 3
= 0.11( p = 0.91)
t 2, 4
= 0.57( p = 0.95)
t 1, 4
= 2.51( p = 0.03)
t 3, 4
= 3.82( p = 0.02)
Table 4. Changes in the color of dentine in Group 1
HSB Level
H( Hue) 0 S( Saturation) % B( Brightness) %
N Mean ± Std. Dev Mean ± Std. Dev Mean ± Std. Dev
1-st level
8
32.75 ± 4.10
68.63 ± 8.94
42.13 ± 9.70
2-nd level
8
35.58 ± 4.54
30.38 ± 1.15
73.13 ± 8.79
3-rd level
8
34.13 ± 6.58
18.50 ± 13.41
75.63 ± 8.45
Control group
8
40.25 ± 4.20
8.25 ± 4.74
83.88 ± 5.89
t 1, k
=- 3.28( p = 0.01) t 1, 2 =- 1.97( p = 0.09)
t 1, k
= 8.65( p = 0.00)
t 1, 2
= 2.45( p = 0.04)
t 1, k
=-5.86( p = 0.00)
t 1, 2
=-3.72( p = 0.01)
PS T-test
t 2, k
=- 1.98( p = 0.08) t 1, 3 =- 0.71( p = 0.05)
t 2, k
= 6.27( p = 0.00)
t 1, 3
= 4.56( p = 0.00)
t 2, k
=-4.88( p = 0.00)
t 1, 3
=-5.19( p = 0.00)
t 3, k
=- 2.46( p = 0.04) t 2, 3 = 0.98( p = 0.36)
t 3, k
= 2.79( p = 0.03)
t 2, 3
= 3.45( p = 0.01)
t 3, k
=-3.82( p = 0.01)
t 2, 3
=-4.41( p = 0.00)
42.13 % to 18.50 % and the brightness increased from 68-63 % to 75.63 %( p < 0.05). In comparison to healthy dentine the values of saturation and brightness did not reach the values of control( p < 0.05). Table 5 presents the changes in the color of dentine in Group 2, after mechanical excavation to healthy dentine, controlled in depth with visual and tactile method( Fig. 4). The colors of all studied depths are as close as possible to the control( healthy dentine)( p > 0.05). The same relationship is also seen in terms of the saturation and brightness of the obtained average values obtained of the test points in the three levels of the depth( p > 0.05). When controlling the excavation with Facelight( Fig. 5), the color of dentine is estimated as affected when a light pink fluorescence is noticed, localized only in the bottom of the cavity. The affected dentine is reliably darker than the control( healthy dentine)( p < 0.05), saturation stands out from control in the entire depth of examined dentine, and brightness authentically distinguishes authentically from control only on the surface of the dentine( Table 6). It is notable that in depth, the color of the points studied remains constant and reliable; differences in depth are not found. We introduce the“ non-infected” dentine term because the presence of fluorescence at the bottom of the cavity is due to microbial bio-products in dentinal tubules during the carious process, and the absence of fluorescence in the dentine is assumed as dentine without microorganisms, which we refer to as“ non-infected dentine”( Fig. 6). It differs in color from the healthy dentine registered by the visual and tactile control, which will be shown in the following results( Table 7). When excavating to“ non-infected dentine”( excavation stops when the fluorescence disappears, which is considered to be a lack of micro-organisms), the color of the surface is fairly darker than the control( healthy dentine) and lighter than the affected( Table 7). Differences in hue and saturation as compared to control are supported by statistical confidence( p < 0.05). This is different from the trend observed in group 2( with excavation also to healthy dentine but with visual and tactile control), where the values are very close to the control( p > 0.05). The second feature that we observe in this group is that the color remains constant in depth, but becomes less intense and with higher brightness( p < 0.05).

102 STOMA. EDUJ( 2016) 3( 1)