Students across disciplines in UK universities are demanding decolonisation of their education. These demands aim to resist the white European colonial endeavour that create racist inequalities. To address racial inequalities, the dental discipline has predominantly focused on diversity rather than decolonisation. By using two inter-related referents of decolonisation to dental caries and cosmetic dentistry, this article demonstrates the epistemic violence exerted through the objective hierarchised knowledge practices in dentistry. First, by starting from the position of racisms, empire and slavery, the enduring colonial patterns of power and hierarchies come into view. We see how knowledge production in dentistry has neglected the interconnected histories of colonialism, racial capitalism and patriarchy that continue to shape oral health inequalities and work towards promoting white supremacist beauty ideals. Moreover, the interconnected character of inequalities — race, class and gender — begin to emerge. Second, by proceeding from the place of colonialism, the limits of dental knowledge and the violence embedded in knowledge practices emerge. This highlights the need for new ways of knowing. To decolonise is to confront and weaken the dental discipline’s entanglement with the enduring colonial patterns of power and hierarchies that are complicit in maintaining inequalities. Diversity without decolonisation will simply subsume marginalised voices into the existing hierarchised knowledge paradigm and continue to reproduce a hierarchised, unequal world. I argue that if dental schools want to address racial and intersectional inequalities, they need new transformative ways of learning and knowing to equip students to work towards social justice in the outside world. Keywords: Race, Racism, Colonialism, Empire, Decolonisation, Racial Capitalism, Power, Diversity, Racial inequalities, Intersectional inequalities, Oral health inequalities, Sugar, Cosmetic Dentistry, Dental caries