Table 6 The sum score of knowledge based in the ability to identify the herbs with high-quality evidence (correct answer) or total answer for periodontal disease and caries

Herbs course

Baseline

0.84 ± 1.23

0.74 ± 1.16

1.24 ± 1.81

1.00 ± 1.32

At follow up

4.48 ± 4.13

3.73 ± 3.31

1.68 ± 2.63

1.32 ± 1.87

P value

< 0.001*

< 0.001*

0.225

0.210

No herbs course

Baseline

0.79 ± 1.27

0.64 ± 0.98

1.21 ± 1.63

1.03 ± 1.35

At follow up

0.59 ± 0.87

0.52 ± 0.79

1.03 ± 1.41

0.79 ± 1.04

P value

0.304

0.383

0.646

0.275

Total

Baseline

0.83 ± 1.24

0.70 ± 1.09

1.16 ± 1.67

0.92 ± 1.23

At follow up

3.09 ± 3.08

1.58 ± 3.09

1.51 ± 2.32

1.22 ± 1.70

P value

< 0.001*

< 0.001*

0.210

0.095