Table 10. Microhardness of MTA after using HF acid as solvent.

MTA: Mineral trioxide aggregate; HF: hydroflouric acid

MTA + Hydroflouric acid
	Upper (U)		Lower (L)
S. No.	U-Upper	U-Lower	L-Upper	L-Lower
1	57.3	60.6	61.1	61.3
2	58.2	61.5	60.2	60.3
3	57.8	60.3	60.5	60.2
4	58.9	60.2	61.8	60.1
5	57.2	60.4	60.8	60.5
6	57.8	60.5	60.5	60.3
7	57.2	61.2	61.2	61.3
8	57.7	61.8	61.5	61.5
9	58.1	61.6	61.3	61.8
10	58.8	61.7	60.7	61.5
11	58.3	60.5	60.9	60.8
12	58.5	60.3	60.8	60.7
13	58.4	60.4	61.5	60.8
14	57.9	60.9	61.3	60.5
15	57.8	61.5	61.8	61.1