Table 2.

Comparison of Prevalence of Blood and Proteins in Patients' Saliva Before and During Orthodontic Treatment^a

Salivary Parameter	n	Time	Mean	Cochran's Q Test	P Value
Blood, %	21	T0	81	0.33	.85
		T1	86
		T2	86
Proteins, %	21	T0	71	1.6	.45
		T1	81
		T2	71

^aT0 indicates before treatment (baseline); T1, 1 hour after bonding; T2, 4–6 weeks after bonding.