Table 1 Mean ± standard deviation in the two subgroups

Visible titanium (mm)

0.38 ± 0.8

0.06 ± 0.3

0.0008

Implant length (mm)

10.56 ± 1.4

10.72 ± 1.3

0.412

Implant diameter (mm)

3.76 ± 0.2

3.80 ± 0.2

0.826

Mod. plaque index

1.07 ± 1.2

1.25 ± 1.4

0.139

Mod. bleeding index

1.29 ± 1.6

1.39 ± 1.7

0.784

Probing depth

2.72 ± 0.7

2.74 ± 0.5

0.954

Implant shoulder – crown margin (mm)

1.88 ± 0.9

2.62 ± 0.9

 < 0.0001

Ellipse circumference (mm)

13.76 ± 1.3

19.06 ± 1.9

 < 0.0001

Abutment shell surface

22.97 ± 11.5

45.65 ± 16.9

 < 0.0001

Abutment truncated cone angle (°)

108.34 ± 9.7

102.32 ± 6.9

 < 0.0001