Oxidative Stress Parameters in Saliva and Its Association with Periodontal Disease and Types of Bacteria

Table 5

Predictive models of oxidative stress parameters.

Dependent variable	Predictive variables	Coef.; no Std.	Coef.; tipif.	Sig	Excluded variables
8-OHdG	Constant	1.50		0.00	Gender male, smoker, and age
	Periodontal disease	1.89	0.45	0.00
	P. gingivalis fimA II	1.03	0.22	0.00
	P. gingivalis fimA Ib	2.67	0.31	0.00
	A. actinomycetemcomitans	1.23	0.23	0.00
	T. forsythia	0.56	0.14	0.00
	T. denticola	1.27	0.28	0.00
GPx	Constant	72.53		0.00	Gender male, smoker, and age
	Enf. periodontal	11.60	0.47	0.00
	T. forsythia	4.53	0.18	0.00
	P. gingivalis fimA II	5.70	0.21	0.00
	T. denticola	6.87	0.26	0.00
	A. actinomycetemcomitans	5.40	0.18	0.00
	P. gingivalis fimA Ib	7.46	0.15	0.01
SOD	Constant	3.30		0.00	Smoker, TF, and age
	Periodontal disease	1.34	0.99	0.00
	T. denticola	−0.68	−0.47	0.00
	P. gingivalis fimA Ib	−1.20	−0.42	0.00
	A. actinomycetemcomitans	−0.41	−0.24	0.00
	P. gingivalis fimA II	−0.23	−0.15	0.01
	Gender male	0.16	−0.12	0.03
MDA	Constant	3.51		0.00	Gender male, Aa, age, and PD
	T. denticola	3.14	0.57	0.00
	T. forsythia	1.32	0.26	0.00
	P. gingivalis fimA II	1.12	0.19	0.01
	P. gingivalis fimA Ib	2.28	0.21	0.01
	Smoker	−0.45	−0.15	0.04