According to the global health statistics, millions of people lack access to quality healthcare owing to social injustice, inequitable distribution of wealth, lack of political will, poor governance in the health delivery system as well as prevalent economic impoverishment among different classes. The health inequalities are more prominent in low-income countries due to inadequate infrastructure, insufficient health budget for procuring medicine, disease prevention, and hiring health professionals in the public sector. In such countries, the patients depend on private healthcare providers who offer quality healthcare at a higher cost, which is often beyond the paying capacity of the poor population and results in health inequalities. On the other hand, UN Agenda 2030, demands the elimination of health-related inequalities and ensuring Universal Health Coverage (UHC). The Sustainable Development Goal 3 of the UN General Assembly`s Agenda 2030, necessitates the provision of UHC to all, minimization of Out-of-Pocket health expenses to zero, and ensuring free UHC to the entire population as one of the basic human rights. The Agenda 2030 states "To promote physical and mental health and well-being, and to extend life expectancy for all, we must achieve universal health coverage and access to quality health care. No one must be left behind" (UN General Assembly, 2015). Such efforts at the global and country levels have resulted in substantial improvement in the global health indicators with time. But the disparities still exist, and the gap is increasing with time due to the growing population, massive urbanization, unequal distribution of wealth and resources. As far as Oral health is concerned, the situation of inequalities is worse as compared to physical and mental healthcare disciplines due to the high cost of dental material, infrastructure, equipment, and shortage of dentists. There is a need to address health inequalities in the Oral healthcare sector because the oral health problems if not addressed in time, may open the door for several other health issues including diabetes, endocarditis, cardiovascular, and respiratory diseases [1]. There has been found an increasing trend in the Oral health-related inequalities among the people belonging to different socio-economic groups living in the low-, middle-and high-income countries. The present study focuses on the occurrence and implications of inequalities in the oral health sector as well as their relationship with the socioeconomic determinants in the pretext of the 21st century.