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Table 1 Mean dimensions of root lengths and cervical section widths in each subgroup (mm, x ± s, n = 8)

From: The effect of different ferrule heights and crown-to-root ratios on fracture resistance of endodontically-treated mandibular premolars restored with fiber post or cast metal post system: an in vitro study

Subgroup

Root length*

Cervical section widths*

Mesial

Buccal

Distal

Lingual

M-D

B-L

FP/0

14.91 ± 0.35

2.04 ± 0.24

2.81 ± 0.38

2.06 ± 0.30

2.58 ± 0.22

5.38 ± 0.29

7.88 ± 0.65

FP/1

14.97 ± 0.17

2.24 ± 0.45

2.96 ± 0.47

2.29 ± 0.44

2.85 ± 0.60

5.82 ± 0.95

7.91 ± 0.79

FP/2

14.92 ± 0.18

2.14 ± 0.33

2.81 ± 0.39

2.21 ± 0.30

2.83 ± 0.56

5.70 ± 0.63

8.09 ± 0.40

FP/3

14.89 ± 0.19

2.07 ± 0.26

2.86 ± 0.41

2.14 ± 0.26

2.51 ± 0.24

5.60 ± 0.52

7.87 ± 0.29

FP/4

15.10 ± 0.16

2.07 ± 0.33

2.57 ± 0.31

2.13 ± 0.50

2.42 ± 0.24

5.41 ± 0.46

7.84 ± 0.64

MP/0

14.95 ± 0.30

2.18 ± 0.27

2.93 ± 0.30

2.23 ± 0.25

2.84 ± 0.24

5.69 ± 0.75

8.07 ± 0.49

MP/1

14.88 ± 0.26

2.07 ± 0.34

2.80 ± 0.29

2.27 ± 0.29

2.73 ± 0.41

5.63 ± 0.69

7.96 ± 0.42

MP/2

15.03 ± 0.20

1.96 ± 0.16

2.55 ± 0.25

2.02 ± 0.16

2.44 ± 0.28

5.32 ± 0.28

7.67 ± 0.38

MP/3

15.09 ± 0.24

2.15 ± 0.23

2.89 ± 0.48

2.18 ± 0.23

2.59 ± 0.36

5.61 ± 0.50

7.95 ± 0.71

MP/4

14.96 ± 0.18

2.13 ± 0.16

2.77 ± 0.41

2.25 ± 0.27

2.57 ± 0.33

5.65 ± 0.45

7.87 ± 0.36

 F Value

0.93

0.60

1.07

0.69

1.56

0.59

0.39

P Value

0.50

0.79

0.40

0.72

0.15

0.80

0.94

  1. Subgroup FP/0: glass fiber post-core with 0.0 mm ferrule lengths, as control; Subgroup FP/1: glass fiber post-core with 1.0 mm ferrule lengths; Subgroup FP/2: glass fiber post-core with 2.0 mm ferrule lengths; Subgroup FP/3: glass fiber post-core with 3.0 mm ferrule lengths; Subgroup FP/4: glass fiber post-core with 4.0 mm ferrule lengths; Subgroup MP/0: cast metal post-core with 0.0 mm ferrule lengths, as control; Subgroup MP/1: cast metal post-core with 1.0 mm ferrule lengths; Subgroup MP/2: cast metal post-core with 2.0 mm ferrule lengths; Subgroup MP/3: cast metal post-core with 3.0 mm ferrule lengths; Subgroup MP/4: cast metal post-core with 4.0 mm ferrule lengths
  2. *Mean (Standard Deviation); M-D: mesiodistal root width; B-L: buccolingual root width