Table 2.

Electrochemical parameters.

Solution	Vitamin E concentration (mg/ml)	Ecorr (mV vs. SCE)	Icorr (μA/cm2)	Rp (ohms cm2)	Cf (μF/cm2)	Implant corrosion protection (%)
Saline	0	0.04	1.12	3.90	1.29	NA
		±	×	× 106	×
		0.067	10“ 7	±	10− 5
			±	5.21	±
			3.84	× 105	5.40
			×		×
			10− 8		10− 6
	1	− 0.13	6.02	5.23	1.73	NS
		±	×	× 106	×
		0.046	10− 8	±	10− 5
			±	1.65	±
			7.33	× 106	1.93
			×		×
			10− 9		10− 6
	2	− 0.07	7.62	4.38	1.90	NS
		±	×	× 106	×
		0.134	10− 8	±	10− 5
			±	3.99	±
			3.99	× 106	6.17
			×		×
			10− 8		10− 6
	3	− 0.06	6.17	3.09	1.79	45 ± 0.9
		±	×	× 107	×
		0.004	10− 8	±	10− 5
			±	2.55	±
			4.19	× 106	4.10
			×		×
			10− 8		10− 6
BCS	0	− 0.74	1.58	4.18	2.99	NA
		±	×	× 105	×
		0.003	10− 6	±	10− 5
			±	4.71	±
			4.95	× 105	7.20
			×		×
			10− 7		10− 6
	1	− 0.74	1.63	3.64	3.21	NS
		±	×	× 105	×
		0.002	10− 6	±	10− 5
			±	4.06	±
			3.13	× 105	7.58
			×		×
			10− 7		10− 6
	2	− 0.73	*7.95	*1.25	2.23	50 ± 3
		±	×	× 106	×
		0.014	10− 7	±	10− 5
			±	4.13	±
			3.39	× 105	4.09
			×		×
			10− 7		10− 6
	3	− 0.37	*1.22	*2.64	1.88	91 ± 3
		±	×	× 106	×
		0.288	10− 7	±	10− 5
			±	3.88	±
			4.74	× 105	1.38
			×		×
			10− 8		10− 6

E_corr - corrosion potential; I_corr - corrosion current; R_p - polarization resistance; C_f - capacitance;

^*T test significant (p < 0.05); NA - control values; NS - non significant values.