In Vitro Comparison of Fracture Resistance of Severely Damaged Primary Anterior Teeth Restored with Different Post and Core Systems

Table 3

Pairwise comparisons of the groups regarding FR.

Group (I)	Group (J)	Mean difference (I–J)	Standard error	Sig.	95% Confidence interval
					Lower bound	Upper bound
EverX + fiber post	Bulk + fiber post	3.37	1.20	0.05	−0.04	6.78
	EverX		1.20	0.04	0.07	6.89
	Bulk		1.20	0.001	1.54	8.37
	Z250		1.20	0.000	3.17	9.99
Bulk + fiber post	EverX + fiber post	−3.36	1.20	0.05	−6.78	0.04
	EverX	0.12	1.20	1.00	−3.29	3.52
	Bulk	1.59	1.20	0.68	−1.82	5.00
	Z250	3.22	1.20	0.07	−0.19	6.62
EverX	EverX + fiber post		1.20	0.04	−6.89	−0.07
	Bulk + fiber post	−0.11	1.20	1.00	−3.52	3.29
	Bulk	1.47	1.20	0.74	−1.93	4.88
	Z250	3.10	1.20	0.09	−0.31	6.51
Bulk	EverX + fiber post		1.20	0.001	−8.37	−1.54
	Bulk + fiber post	−1.59	1.20	0.68	−5.00	1.82
	EverX	−1.47	1.20	0.74	−4.88	1.93
	Z250	1.62	1.20	0.66	−1.78	5.03
Z250	EverX + fiber post		1.20	0.000	−9.99	−3.17
	Bulk + fiber post	−3.21	1.20	0.07	−6.62	0.19
	EverX	−3.10	1.20	0.09	−6.51	0.31
	Bulk	−1.62	1.20	0.66	−5.03	1.78

The mean difference is significant at the 0.05 level.