Table 1 Morphometric parameters of C2 PIC measured from transverse PIC width (TPW), oblique PIC width (OPW) and minimum PIC diameter (MPD)

TPW

L

2.64 ± 1.16

5.69 ± 1.44*

0.47 ± 0.29

R

2.46 ± 1.16

5.27 ± 1.52

0.46 ± 0.17

Both

2.55 ± 1.16

5.48 ± 1.49

0.46 ± 0.24

OPW

L

3.01 ± 1.22*

5.96 ± 1.65*

0.54 ± 0.11

R

2.51 ± 1.19

5.15 ± 1.60

0.52 ± 0.13

Both

2.76 ± 1.23

5.56 ± 1.67

0.53 ± 0.12

MPD

L

3.94 ± 1.48*

6.74 ± 1.73*

0.57 ± 0.10

R

3.69 ± 1.68

6.34 ± 2.06

0.55 ± 0.12

Both

3.82 ± 1.58

6.54 ± 1.91

0.56 ± 0.12