Effectiveness of Nanohydroxyapatite on Demineralization of Enamel and Cementum Surrounding Margin of Yttria-Stabilized Zirconia Polycrystalline Ceramic Restoration

Table 3

Multiple comparisons of Vickers microhardness of enamel and cementum upon application of nanohydroxyapatite (NHA) and Clinpro (CP) compared with no treatment (NT) at different stages including before material application (B_M), after material application (A_M), and after inducing demineralization (A_D).

Stage	Enamel				Cementum
AM–BM		NT	NHA	CP		NT	NHA	CP
	NT	1.000	0.002	0.001	NT	1.000	0.002	0.001
	NHA		1.000	1.000	NHA		1.000	1.000
	CP			1.000	CP			1.000
AD–AM		NT	NHA	CP		NT	NHA	CP
	NT	1.000	0.027	.001	NT	1.000	0.060	0.016
	NHA		1.000	.233	NHA		1.000	1.000
	CP			1.000	CP			1.000