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Table 3 Percentages of sites with bleeding on probing (BOP) measurements at baseline, 4, and 8 weeks N = 68

From: Effects of probiotic bacterium Weissella cibaria CMU on periodontal health and microbiota: a randomised, double-blind, placebo-controlled trial

Teeth site

Timepoint

Mean ± SD

Delta mean ± SD

Probiotic

(n = 34)

Placebo

(n = 34)

P -value#

Probiotic

(n = 34)

Placebo

(n = 34)

P-value#

Overall

Baseline

16.21 ± 14.23

19.15 ± 17.88

NS

   

4 weeks

7.56 ± 13.20a

11.47 ± 14.06a

NS

−8.59 ± 14.78

−7.56 ± 13.97

NS

8 weeks

6.29 ± 8.54a

9.74 ± 14.26a

NS

−9.82 ± 14.36

−9.35 ± 13.58

NS

Maxilla

Buccal

Baseline

13.68 ± 24.77

14.68 ± 23.52

NS

   

4 weeks

5.85 ± 19.15

8.74 ± 14.78

NS

−7.82 ± 27.33

−5.88 ± 23.80

NS

8 weeks

1.97 ± 11.49a

7.79 ± 16.48

.030

−11.74 ± 25.77

−6.85 ± 22.82

NS

Lingual

Baseline

19.53 ± 28.55

26.47 ± 30.55

NS

   

4 weeks

6.85 ± 17.96a

15.62 ± 22.06a

.038

−12.71 ± 27.18

−10.71 ± 26.81

NS

8 weeks

6.82 ± 15.91a

7.79 ± 20.14a

NS

− 12.71 ± 25.90

−18.56 ± 28.61

NS

Mandibular

Buccal

Baseline

8.74 ± 14.78

10.71 ± 17.75

NS

   

4 weeks

4.85 ± 11.86

6.85 ± 21.37

NS

−3.88 ± 17.73

− 3.88 ± 19.51

NS

8 weeks

5.82 ± 12.77

8.79 ± 18.90

NS

−2.91 ± 20.50

−1.94 ± 16.13

NS

Lingual

Baseline

22.41 ± 24.20

24.44 ± 25.09

NS

   

4 weeks

12.74 ± 23.28

14.65 ± 22.00

NS

−9.74 ± 31.18

−9.79 ± 27.77

NS

8 weeks

10.68 ± 15.67a

14.65 ± 24.86

NS

−11.68 ± 26.90

− 9.79 ± 28.94

NS

  1. Values are mean ± standard deviation
  2. aSignificant differences from baseline
  3. #Significant differences between the groups: P < .05, significant (bold); not significant (NS)