Table 2 Mean scores of clinical parameters and their Δ at baseline and 3 and 6 months in the test (SRP plus FO) and control (SRP alone) groups. Data are mean ± SD

No PD ≥ 4 mm

 Baseline

55.0 ± 24.6

50.0 ± 17.0

0.23

 3 months

31.1 ± 19.8*

30.1 ± 16.2*

0.44

 Δ baseline–3 months

23.9 ± 17.0

19.9 ± 8.01

0.17

 6 months

27.2 ± 20.4*#

26.0 ± 17.0*#

0.42

 Δ baseline–6 months

27.8 ± 18.2#

24.1 ± 12.7#

0.23

PD (mm)

 Baseline

5.01 ± 0.49

5.02 ± 0.71

0.48

 3 months

3.68 ± 0.68*

3.98 ± 0.69*

0.12

 Δ baseline–3 months

1.33 ± 0.66

1.04 ± 0.48

0.06

 6 months

3.49 ± 0.80*#

3.64 ± 0.82*#

0.28

 Δ baseline– 6 months

1.52 ± 0.77#

1.38 ± 0.60#

0.26

REC (mm)

 Baseline

0.71 ± 0.62

0.86 ± 0.82

0.26

 3 months

0.77 ± 0.54

1.07 ± 0.74*

0.09

 Δ baseline–3 months

0.07 ± 0.30

0.21 ± 0.32

0.08

 6 months

0.84 ± 0.66

1.12 ± 0.73*

0.11

 Δ baseline–6 months

0.13 ± 0.42

0.27 ± 0.39

0.15

CAL (mm)

 Baseline

5.71 ± 0.79

5.87 ± 1.02

0.29

 3 months

4.39 ± 1.09*

5.04 ± 1.00*

0.03

 Δ baseline–3 months

1.32 ± 0.72

0.83 ± 0.49

0.01

 6 months

4.25 ± 1.29*

4.77 ± 1.02*#

0.09

 Δ baseline–6 months

1.46 ± 0.92

1.12 ± 0.54#

0.07

FMBOP (%)

 Baseline

26.1 ± 14.5

32.5 ± 17.5

0.11

 3 months

13.1 ± 5.91*

19.0 ± 7.21*

0.004

 Δ baseline–3 months

13.0 ± 13.6

13.5 ± 18.1

0.46

 6 months

12.8 ± 6.96*

16.9 ± 6.82*

0.04

 Δ baseline–6 months

13.3 ± 13.5

15.7 ± 18.8

0.33

FMPI (%)

 Baseline

32.1 ± 20.6

39.9 ± 22.6

0.13

 3 months

16.5 ± 8.10*

26.8 ± 17.5*

0.01

 Δ baseline–3 months

15.6 ± 18.5

13.1 ± 20.4

0.35

 6 months

16.8 ± 13.9*

25.8 ± 19.2*

0.05

 Δ baseline–6 months

15.4 ± 19.8

14.1 ± 22.1

0.43

Closed pockets (%) with PD ≤ 4 mm and no BOP

 Baseline

0

0

-

 3 months

59.9 ± 16.2

49.8 ± 12.0

0.02

 6 months

62.1 ± 18.5

56.5 ± 15.2

0.15