. 2016 Jun 13;2016:2863817. doi: 10.1155/2016/2863817

Table 2.

Mean fracture strengths (MPa) of teeth treated with BA, MTA-A, MTA-P, and ERRM at 24-month period and intergroup comparison of difference in fracture strength.

Groups	Fracture strength		⁺ p
Groups	Mean ± SD	Median	⁺ p
¹BA	20.46 ± 2.53	21.04 (15.78–23.31)	*0.005* ^∗∗
²MTA-P	18.88 ± 5.13	17.45 (11.25–25.37)
³MTA-A	14.12 ± 1.99	13.61 (11.71–18.02)
⁴ERRM	17.65 ± 4.28	16.66 (12.57–26.37)

1-2 ^† p	*0.739*
1-3 ^† p	*0.001* ^∗∗
1-4 ^† p	*0.063*
2-3 ^† p	*0.029* ^∗
2-4 ^† p	*0.579*
3-4 ^† p	*0.035* ^∗

⁺Kruskal-Wallis test; ^†Mann-Whitney U test; ^∗∗ p < 0.01; ^∗ p < 0.05.