A Two-Year Longitudinal Study of the Effectiveness of the CRT® Bacteria Test in Evaluating Caries Risk in Three-Year-Old Children
Table 4
Caries status of 140 children at the different CRT-LB levels over two years.
Examination
LB level
Number of participants
Number of caries cases
Caries prevalence (%)
SNK
χ2
dmft ()
SNK
χ2
dmfs ()
SNK
χ2
CSI ()
SNK
χ2
Initial exam
0
58
9
15.52
B
17.98
<0.0001
0.52 ± 1.35
B
21.58
<0.0001
0.67 ± 1.84
B
21.16
<0.0001
1.38 ± 3.60
B
21.97
<0.0001
1
39
14
35.90
A
1.44 ± 2.52
B
A
1.85 ± 3.44
B
A
4.84 ± 9.98
B
A
2
27
16
59.26
A
2.70 ± 3.07
A
4.59 ± 6.78
A
8.75 ± 10.57
A
3
16
9
56.25
A
3.00 ± 3.56
A
4.81 ± 8.31
A
9.69 ± 13.26
A
Follow-up exam after two years
0
58
32
55.17
B
7.97
<0.01
2.24 ± 2.96
B
20.83
<0.0001
3.31 ± 4.63
B
21.16
<0.0001
5.86 ± 8.30
B
24.08
<0.0001
1
39
25
64.10
B
A
3.54 ± 4.42
B
5.41 ± 7.97
B
11.22 ± 15.98
B
2
27
23
85.19
A
6.56 ± 4.71
A
11.00 ± 9.52
A
21.99 ± 17.17
A
3
16
13
81.25
B
A
5.56 ± 4.29
A
9.44 ± 9.80
A
18.13 ± 17.11
A
Increase over the two years
0
58
23
39.66
A
2.12
>0.05
1.72 ± 2.59
B
13.29
<0.01
2.64 ± 4.10
B
15.94
<0.01
4.48 ± 7.00
C
20.477
<0.0001
1
39
11
28.21
A
2.10 ± 2.83
B
3.56 ± 5.61
B
6.38 ± 10.08
C
B
2
27
7
25.93
A
3.85 ± 2.96
A
6.41 ± 5.32
A
13.24 ± 9.94
A
3
16
4
25.00
A
2.56 ± 2.42
B
A
4.63 ± 4.32
B
A
8.44 ± 8.52
B
A
Differences between groups with identical letters denoting SNK ranking are not statistically significant, while differences between groups with different letters are statistically significant. The level of SNK is ranked alphabetically.
