In-vitro characterization and evaluation of mesoporous titanium dioxide composite hydroxyapatite and its effectiveness in occluding dentine tubules

Table 4 Cytotoxicity of TiO₂–HAP

Groups	OD values	RGR (%)	Cytotoxicity grade
Positive group	0.006 + 0.00	5	4
Control group	0.257 + 0.014*	100	0
75% TiO₂–HAP group	0.286 + 0.032*	111	0
50% TiO₂–HAP group	0.298 + 0.059*	115	0
25% TiO₂–HAP group	0.266 + 0.041*	103	0
12.5% TiO₂–HAP group	0.259 + 0.055*	100	0

ISSN: 1472-6831