Abstract
The disparity in oral health is defined as asymmetrical distribution of disease, disability or ill health among particular group or population; the poor oral health exists among certain groups in the society while others have good oral health. The burden of oral health disparity is operated by multiple determinants, biological, social, behavioral, economical and cultural (Grembowski, Patrick, Milgrom, Nucci, Shuk Yin Lee, & Zane Jolles, 2006). This paper will discuss the oral health disparity from epidemiological perspective as a global phenomenon looking at the multi-factorial nature of the determinants using different examples from developed countries like the USA, Canada and Australia, and other examples from developing countries like Brazil, and Peru.