Table 3 Descriptive statistics (mean ± SD, mm) of changes in peri-implant soft tissue

ΔAMM

Control

− 0.35± 0.18

− 0.55 ± 0.18

− 0.60 ± 0.42

− 0.61 ± 0.36

F (1,42) = 11.01

F (1,24) = 14.25

F (3,72) = 1.24

FGG

− 0.11 ± 0.10

− 0.17 ± 0.15

− 0.22 ± 0.25

− 0.31 ± 0.23

P < 0.001

P < 0.001

P = 0.303

P^c

0.002

 < 0.001

0.017

0.016

–

–

–

ΔASTT_1 mm

Control

− 0.36 ± 0.15

− 0.40 ± 0.17

− 0.52 ± 0.18

− 0.67 ± 0.28

F (2,55) = 14.13

F (1,24) = 30.65

F (3,72) = 0.67

FGG

− 0.16 ± 0.10

− 0.18 ± 0.21

− 0.23 ± 0.23

− 0.33 ± 0.21

P < 0.001

P < 0.001

P = 0.576

P^c

0.001

0.012

0.017

0.044

–

–

–

ΔASTT_3 mm

Control

− 0.25 ± 0.12

− 0.39 ± 0.18

− 0.53 ± 0.14

− 0.67 ± 0.31

F (2,57) = 26.86

F (1,24) = 25.42

F (3,72) = 4.86

FGG

− 0.13 ± 0.08

− 0.19 ± 0.17

− 0.26 ± 0.24

− 0.32 ± 0.21

P < 0.001

P < 0.001

P = 0.004

P^c

0.007

0.013

0.011

0.016

–

–

–

ΔASTT_5 mm

Control

− 0.20 ± 0.13

− 0.29 ± 0.18

− 0.46 ± 0.22

− 0.51 ± 0.24

F (1,36) = 45.86

F (1,24) = 14.58

F (3,72) = 9.95

FGG

− 0.08 ± 0.05

− 0.12 ± 0.08

− 0.16 ± 0.14

− 0.21 ± 0.16

P < 0.001

P < 0.001

P < 0.001

P^c

0.013

0.020

0.001

0.004

–

–

–

Changes in width of KM

Control

− 0.11 ± 0.11

− 0.21 ± 0.17

− 0.30 ± 0.13

− 0.40 ± 1.13

F (1,41) = 7.27

F (1,24) = 0.30

F (3,72) = 0.22

FGG

− 0.07 ± 0.21

− 0.15 ± 0.75

− 0.21 ± 0.58

− 0.28 ± 0.58

P = 0.003

P = 0.588

P = 0.882

P^c

 > 0.999

 > 0.999

 > 0.999

 > 0.999

–

–

–