Table 1 Plaque-covered areas before and after brushing and plaque removal rates

38.9 ± 7.2

23.1 ± 5.8

0.107

53.3 ± 8.5

30.7 ± 7.1

10.7 ± 3.6

0.027*

70.9 ± 6.5

0.656

36.0 ± 6.5

9.8 ± 2.4

0.004**

75.4 ± 6.3

0.139

35.4 ± 5.5

9.6 ± 2.2

0.001**

74.4 ± 4.2

0.352

35.2 ± 3.2

13.3 ± 2.1

< 0.0001**

46.3 ± 10.7

29.6 ± 8.9

0.266

35.3 ± 8.5

32.6 ± 10.4

12.2 ± 5.9

0.137

69.4 ± 9.4

0.144

33.4 ± 9.3

8.3 ± 6.3

0.053

80.7 ± 6.3

0.008*

30.6 ± 7.2

8.2 ± 2.7

0.032*

75.7 ± 5.5

0.049*

29.6 ± 8.2

14.9 ± 5.3

0.193

75.9 ± 2.8

28.3 ± 10.8

8.9 ± 4.4

0.170

72.7 ± 10.0

> 0.999

39.2 ± 10.2

11.7 ± 4.1

0.068

68.8 ± 12.1

> 0.999

41.4 ± 8.7

11.5 ± 3.8

0.034*

72.7 ± 7.2

> 0.999

37.3 ± 7.1

22.1 ± 5.1

0.104

52.8 ± 7.9

27.9 ± 6.3

9.4 ± 3.2

0.023*

70.1 ± 7.3

0.210

31.1 ± 6.0

7.3 ± 2.4

0.004**

77.7 ± 6.5

0.023*

32.9 ± 6.3

6.9 ± 1.7

0.003**

79.5 ± 3.7

0.042*

32.3 ± 3.1

11.4 ± 1.9

< 0.0001**

42.1 ± 7.7

26.0 ± 7.6

0.143

53.1 ± 10.4

38.2 ± 9.4

13.8 ± 5.0

0.035*

68.2 ± 7.4

0.879

44.4 ± 7.8

15.9 ± 4.1

0.007*

71.7 ± 6.0

0.517

43.8 ± 7.8

17.4 ± 4.5

0.002**

66.1 ± 5.7

> 0.999

42.3 ± 4.0

18.2 ± 2.7

< 0.0001**