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Table 2 Colony count of Streptococcus mutans before and after of each phase, and significances of effectiveness of using mouthwashes intergroups and intragroups

From: The effect of antimicrobial activity of Teucrium Polium on Oral Streptococcus Mutans: a randomized cross-over clinical trial study

  

Group 1

Group 2

p-value *

Treatment in the first phase

 

Treatment A

Treatment B

 

1st period_S.mutans_before

Mean

7.24(±1.69)

7.86(±1.28)

 

1st period_S.mutans_after

Mean

5.39(±1.24)

7.68(±1.40)

 

Difference of S.mutans before and after the use of mouthwash in first phase

Mean

1.85(±0.87)

0.18(±0.60)

< 0.001

p-value in treatment

 

< 0.001

=0.340

 

Treatment in the second phase

 

Treatment B

Treatment A

 

2nd period_S.mutans_before

Mean

6.93(±1.41)

8.34(±1.42)

 

2nd period_S.mutans_after

Mean

6.67(±1.17)

6.62(±0.98)

 

Difference of S.mutans before and after the use of mouthwash in second phase

Mean

0.25(±0.74)

1.72(±1.09)

=0.001

p-value in treatment

 

=0.279

< 0.001

 
  1. * p-value in decreasing the colonies between two groups at the end of each period