Table 3.

Comparative analysis of salivary parameters related to lipid peroxidation and antioxidant enzymes within clinical stages (OLEP stages) of study group B

S. No	Variable	Study group B—clinical stages				P value
		Stage I (Mean ± SD)	Stage II (Mean ± SD)	Stage III (Mean ± SD)	Stage IV (Mean ± SD)
1	TBARS	3.747 ± 0.004 b†c‡d‡	3.755 ± 0.002 a†c*d‡	3.761 ± 0.006 a‡b*d‡	3.786 ± 0.004 a‡b‡c‡	0.000‡
2	Nitrates	162.250 ± 0.886 b‡c‡d‡	170.143 ± 2.315 a‡c‡d‡	179 ± 2.256 a‡b‡d‡	188.667 ± 1.366 a‡b‡c‡	0.000‡
3	GST	194.250 ± 0.886 b‡c‡d‡	188.714 ± 1.069 a‡c‡d‡	184 ± 0.852 a‡b‡d‡	180.333 ± 0.5164 a‡b‡c‡	0.000‡
4	Uric acid	2.570 ± 0.103 b‡c‡d‡	2.221 ± 0.140 a‡c‡d‡	2.031 ± 0.060 a‡b‡d†	1.823 ± 0.080 a‡b‡c†	0.000‡

One-way ANOVA with post hoc Tukey test (test of significance) is applied at 95% confidence interval. a = compared to stage I, b = compared to stage II, c = compared to stage III, d = compared to stage IV, TBARS = thiobarbituric acid reactive substances, GST = glutathione S-transferase, SD = standard deviation *P value < 0.05; †P value < 0.01; ‡P value < 0.001.