Table 2 Comparison of mean scores of awareness, attitude, subjective norms, perceived behavioral control, behavioral intention, the performance of oral and dental health behaviors, and dental plaque index of pregnant women in the two intervention and control groups before and three months after the intervention

Awareness

Intervention

8.45 ± 1.28

16.80 ± 1.36

0.001

Control

9.80 ± 1.17

10.04 ± 1.20

0.289

P-value

0.236

0.001

Attitude

Intervention

18.28 ± 3.35

34.70 ± 3.38

0.001

Control

19.62 ± 3.19

21.35 ± 3.22

0.201

P-value

0.228

0.001

Subjective norms

Intervention

16.52 ± 3.48

28.20 ± 3.10

0.001

Control

18.58 ± 3.47

18.79 ± 3.50

0.292

P-value

0.188

0.001

Perceived behavioral control

Intervention

18.12 ± 3.58

35.80 ± 3.71

0.001

Control

17.23 ± 3.54

18.44 ± 3.60

0.240

P-value

0.245

0.001

Behavioral intention

Intervention

19.48 ± 3.88

36.16 ± 3.08

0.001

Control

20.60 ± 3.78

21.79 ± 3.80

0.249

P-value

0.251

0.001

Performance of oral and dental health care behaviors

Intervention

5.08 ± 0.26

10.32 ± 0.68

0.001

Control

5.16 ± 0.29

5.22 ± 0.32

0.212

P-value

0.272

0.001

Dental plaque index (PI)

Intervention

65 ± 12

34 ± 77

0.001

Control

63 ± 13

67 ± 11

0.135

P-value

0.273

0.001

DMFT index

Intervention

5.8 ± 2.2

5.3 ± 1.8

0.228

Control

5.4 ± 2.3

5.5 ± 2.1

0.269

P-value

0.242

0.321