Table 2 Comparison of deviations and angulations between pilot-drill guided and full-guided implant insertion. The means, their standard deviations (SD), medians, minima and maxima are shown. The p-values are resulting from a pair-wise comparison. P-values for statistically significant differences are marked in bold font

Mesio-distal deviation implant/sleeve

pilot-drill guided

-3.85

5.35

-2.89

-18.00

6.28

0.144

In degrees

full-guided

0.41

2.65

0.63

-5.50

6.60

Oro-vestibular deviation implant/sleeve

pilot-drill guided

0.72

0.85

0.85

-8.75

5.25

0.332

In degrees

full-guided

0.31

2.69

0.28

-5.70

7.60

Mesio-distal mismatch implant/sleeve

pilot-drill guided

-0.02

0.38

0.00

-0.77

0.84

< 0.001

In mm

full-guided

-0.14

0.39

-0.10

-1.13

0.90

Oro-vestibular mismatch implant/sleeve

pilot-drill guided

0.24

0.43

0.25

-0.90

1.00

0.079

In mm

full-guided

0.15

0.47

0.17

-1.50

1.15

Three-dimensional angulation

pilot-drill guided

5.792

3.290

4.850

0.300

13.600

< 0.001

In degrees

full-guided

3.388

1.647

3.300

0.300

7.500

Mesio-distal mismatch at implant base

pilot-drill guided

0.011

0.527

0.040

-0.980

0.970

0.601

In mm

full-guided

-0.027

0.437

-0.025

-0.910

1.060

Oro-vestibular mismatch at implant base

pilot-drill guided

0.048

0.575

-0.005

-1.090

1.390

0.284

In mm

full-guided

0.129

0.562

0.160

-1.380

1.380

Vertical mismatch at implant base

pilot-drill guided

-0.304

0.647

-0.325

-2.150

1.220

0.026

In mm

full-guided

-0.040

0.448

-0.005

-0.910

1.220

Cumulated mismatch at implant base

pilot-drill guided

0.962

0.424

0.925

0.090

2.380

0.007

In mm

full-guided

0.768

0.355

0.700

0.170

2.060

Mesio-distal mismatch at implant tip

pilot-drill guided

0.358

1.184

0.085

-1.770

3.010

0.231

In mm

full-guided

0.055

0.936

0.040

-1.560

2.100

Oro-vestibular mismatch at implant tip

pilot-drill guided

-0.459

1.033

-0.525

-2.670

1.980

0.308

In mm

full-guided

-0.274

0.949

-0.225

-2.180

2.240

Vertical mismatch at implant tip

pilot-drill guided

-0.235

0.645

-0.180

-2.120

1.250

0.047

In mm

full-guided

0.001

0.453

0.010

-0.890

1.240

Cumulated mismatch at implant tip

pilot-drill guided

1.662

0.685

1.660

0.260

3.030

0.004

In mm

full-guided

1.304

0.574

1.185

0.450

2.750