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. 2013 Sep 15;40(11):1025–1035. doi: 10.1111/jcpe.12155

Table 6.

Mean (±standard deviation) for microbiological outcome measures in supragingival plaque

Species Time point Mean log10 cfu/ml ± SD Δ mean log10 cfu/ml
SRP SRP + P p-value SRP SRP +P p-value
Aggregatibacter actinomycetemcomitans Baseline 3.43 ± 2.29 3.58 ± 3.32  NS
3 weeks 0.62 ± 1.63* 0.79 ± 2.13* NS −3.52 ± 1.27 −4.64 ± 2.19 NS
6 weeks 0.63 ± 1.7* 1.4 ± 2.56* NS −3.49 ± 1.36 −3.62 ± 2.01 NS
9 weeks 1.04 ± 1.94* 1.65 ± 2.85* NS −2.99 ± 1.2 −3.21 ± 2.19 NS
12 weeks 1.21 ± 2.08* 2.18 ± 2.83* NS −2.78 ± 1.4 −2.32 ± 1.48 NS
Fusobacterium nucleatum Baseline 7.12 ± 1.32  6.45 ± 1.66  NS
3 weeks 1.7 ± 2.49* 1.14 ± 2.02* NS −5.42 ± 2.21 −5.3 ± 1.6 NS
6 weeks 3.11 ± 2.69* 2.99 ± 2.47* NS −4.01 ± 2.41 −3.45 ± 1.42 NS
9 weeks 4.17 ± 2.62* 3.82 ± 2.39* NS −2.94 ± 2.31 −2.63 ± 1.19 NS
12 weeks 5.47 ± 1.71* 4.48 ± 2.32* NS −1.65 ± 1.2 −1.96 ± 1.19 NS
Porphyromonas gingivalis Baseline 6.93 ± 1.61  7.17 ± 1.48  NS
3 weeks 3.97 ± 1.68* 3.49 ± 1.58* NS −2.97 ± 1.68 −3.68 ± 1.2 0.089
6 weeks 4.72 ± 1.79* 4.62 ± 1.22* NS −2.21 ± 1.48 −2.55 ± 1 NS
9 weeks 5.53 ± 1.9* 4.9 ± 1.31* NS −1.4 ± 0.82 −2.27 ± 0.84 0.009
12 weeks 6.05 ± 2.04* 5.06 ± 1.5* NS −0.89 ± 0.67 −2.11 ± 0.84 0.000
Prevotella intermedia Baseline 7.64 ± 1.56  6.77 ± 2.45  NS
3 weeks 3.04 ± 2.24* 2.79 ± 2.19* NS −4.6 ± 2.03 −4.26 ± 1.65 NS
6 weeks 4.32 ± 2.16* 3.28 ± 2.28* NS −3.32 ± 1.7 −3.73 ± 1.69 NS
9 weeks 4.93 ± 2.41* 4.22 ± 1.91* NS −2.71 ± 1.93 −2.73 ± 1 NS
12 weeks 6.08 ± 1.54* 4.85 ± 1.86* 0.074 −1.56 ± 1.15 −2.05 ± 0.81 0.085
Tannerella forsythia Baseline 7.25 ± 0.68  6.89 ± 0.56  NS
3 weeks 1.49 ± 2.18* 2.28 ± 2.38* NS −5.76 ± 2.01 −4.61 ± 2.17 NS
6 weeks 3.58 ± 2.34* 4.23 ± 1.94* NS −3.67 ± 2.41 −2.67 ± 1.56 NS
9 weeks 4.68 ± 2* 4.61 ± 1.99* NS −2.57 ± 1.91 −2.28 ± 1.67 NS
12 weeks 5.74 ± 1.25* 5.42 ± 1.27* NS −1.51 ± 1.23 −1.48 ± 1.07 NS
Total load Baseline 10.56 ± 0.74  10.92 ± 0.72  NS
3 weeks 8 ± 1.91* 8.8 ± 1.27* NS −2.55 ± 1.75 −2.12 ± 1.21 NS
6 weeks 9.15 ± 1.09* 9.07 ± 1.25* NS −1.41 ± 0.92 −1.85 ± 1.04 NS
9 weeks 9.51 ± 1.11* 9.67 ± 1.16* NS −1.04 ± 0.98 −1.26 ± 1.01 NS
12 weeks 9.89 ± 0.84* 9.96 ± 0.97* NS −0.66 ± 0.62 −0.97 ± 0.89 NS

Significance of differences between groups; > 0.1: not significant (NS); < 0.1 to > 0.05: tendency; < 0.05: significant (bold).

*

Significantly different from baseline.

SRP, scaling and rootplaning + placebo lozenge; SRP + P, scaling and rootplaning + probiotic lozenge.