“…Several studies have identified an association
between oral health and socioeconomic variables such as family income 9,12,20 , educational level 12,22 , delay and disruption of the education of the child 7 and social class 16,23,33 , in various locations including
Australia 17 , New
Zealand 28 , Jordan 29 , Japan 31 , Sweden 19 , the UK 10 and
Brazil 8,11,27,30 .…”