Microhardness and Fluoride Release of Glass Ionomer Cement Modified with a Novel Al⁺³ Complex to Enhance Its Antimicrobial Activity

Table 4

Means and standard deviations (in parentheses) of Vickers microhardness of C-GIC and Al-GICs.

Groups (% of Al^+3 complex)	Microhardness (VHN)
Control group	95.78 (4.65)^a
Group I (2.5%)	94.36 (3.64)^a
Group II (5%)	93.17 (4.30)^a
Group III (7.5%)	91.89 (3.28)^a
Group IV (10%)	90.06 (2.29)^a

Each value represents the mean of ten specimens. The same superscript letters indicate the absence of significant differences between groups ().