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Table 2 Clinical parameters (mean ± SD, median and 95% CI)

From: The influence of soft-tissue volume grafting on the maintenance of peri-implant tissue health and stability

Clinical parameters

Control group

Test group

p

Mean ± SD

Median

95% CI

Mean ± SD

Median

95% CI

Plaque index

 Patient-level

0.33 ± 0.36

0.21

0.21–0.45

0.18 ± 0.28

0.00

0.04–0.31

0.093

 Implant-level

0.35 ± 0.38

0.17

0.25–0.46

0.23 ± 0.32

0.17

0.11–0.35

 

Bleeding on probing (%)

 Patient-level

28.42 ± 28.35

25.0

18.82–38.01

11.16 ± 14.63

0.00

4.11–18.21

0.023

 Implant-level

29.44 ± 30.0

17.0

21.30–37.57

13.83 ± 19.37

0.00

6.46–21.20

 

Probing depth (mm)

 Patient-level

2.98 ± 0.65

2.83

2.76–3.20

2.36 ± 0.53

2.33

2.10–2.61

0.001

 Implant-level

2.99 ± 0.64

2.83

2.81–3.16

2.40 ± 0.54

2.33

2.19–2.61

 

Mucosal recession (mm)

 Patient-level

0.07 ± 0.19

0

0.00–0.13

0.07 ± 0.18

0

− 0.02 to 0.15

0.76

 Implant-level

0.07 ± 0.25

0

0.09–0.14

0.09 ± 0.21

0

0.04–0.17