Table 2 Mean and SD of angular tip values for the planned (T1–T0), the achieved (T2–T0), the imprecision (|T2–T1|) and the accuracy (%) considering the individual dental groups, the individual jaws (maxilla and mandible) and the total

77

3.81

15.76

3.05

13.24

 < 0.001*

1.96

2.13

80.72

6.34

 < 0.001*

45

0.36

11.98

0.17

9.74

 < 0.001*

1.97

1.35

78.63

6.62

 < 0.001*

71

 − 0.31

10.21

 − 0.28

7.91

 < 0.001*

1.93

1.39

77.52

5.18

 < 0.001*

82

9.26

10.92

7.35

8.51

 < 0.001*

2.65

1.86

78.47

6.91

 < 0.001*

81

1.64

6.87

1.29

5.28

 < 0.001*

1.37

0.96

78.16

6.06

 < 0.001*

38

 − 0.65

9.41

 − 0.59

7.33

 < 0.001*

1.86

1.09

77.42

7.29

 < 0.001*

77

 − 3.35

7.76

 − 2.55

6.13

 < 0.001*

1.63

0.98

77.75

5.59

 < 0.001*

74

 − 6.47

8.51

 − 5.03

6.65

 < 0.001*

1.99

1.46

78.11

5.42

 < 0.001*

275

3.81

13.01

3.01

10.53

 < 0.001*

2.16

1.78

78.88

6.37

 < 0.001*

270

 − 2.32

8.54

 − 1.81

6.67

 < 0.001*

1.68

1.16

77.93

5.93

 < 0.001*

545

0.76

11.43

0.62

9.14

 < 0.001*

1.92

1.52

78.41

6.17

 < 0.001*