Table 14. Intergroup comparison of microhardness between Group 1 (MTA) and Group 2 (Biodentine) after usage in Subgroups C and D.

MTA: Mineral trioxide aggregate; HF: hydroflouric acid

Subgroup C (Citric acid)	U-Upper Mean (SD)	U-Lower Mean (SD)	L-Upper Mean (SD)	L – Lower Mean (SD)
Group 1 (MTA)	60.65 (0.6)	63.94 (0.5)	63.93 (0.45)	64.16 (0.52)
Group 2 (Biodentine)	62.02 (0.48)	64.98 (0.5)	65.08 (0.47)	64.98 (0.63)
Unpaired t-test	t = -6.864	t = -5.651	t = - 6.783	t = -3.872
P value, Significance	p<0.001**	P<0.001**	p< 0.001**	p =0.001*
Subgroup D (HF acid)	U-Upper Mean (SD)	U-Lower Mean (SD)	L-Upper Mean (SD)	L – Lower Mean (SD)
Group 1 (MTA)	57.99 (0.53)	60.89 (0.58)	61.06 (0.48)	60.84 (0.53)
Group 2 (Biodentine)	74.4 (0.36)	58.44 (1.04)	62.05 (0.69)	61.85 (0.71)
Unpaired t test	t = -1.471	t = -5.029	t = -4.526	t = -4.368
P value, Significance	p = 0.152	p<0.001**	p<0.001**	p<0.001**