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

Table 2

FR of the five groups (n = 12) in megapascals (MPa).

Group	Mean	Standard deviation	Standard error	95% Confidence interval for mean		Minimum	Maximum
				Lower bound	Upper bound
EverX + fiberpost	19.30	2.68	0.77	17.59	21.01	15.42	22.89
Bulk + fiber post	15.93	3.19	0.92	13.90	17.96	10.13	20.75
EverX	15.81	3.50	1.01	13.59	18.04	9.70	21.49
Bulk fill	14.34	3.01	0.86	12.42	16.25	9.43	19.82
Z250	12.71	2.28	0.65	11.26	14.16	9.83	16.67
Total	15.62	3.60	0.46	14.69	16.55	9.43	22.89