salivary cotinine levels and salivary electrolytes, protein, secretory IgA, sialic acid and
amylase in children. DESIGN: Saliva was collected from 90 passive smoker (PS) subjects
(the study group) and 90 healthy age-matched children (the control group). The study group
was divided into three subgroups according the number of cigarettes smoked. Socio-
economic status, dental and dietary habits were recorded by questionnaire. Stimulated …