Association of ABO Blood Groups with Malocclusion: A Narrative Review

Malocclusion has a multifactorial aetiology and can be attributed to local as well as general factors.Genetics plays a significant role in aetiology of malocclusion.Malocclusion is considered as a quantitative genetic trait with continuous graded distribution in the population.Association between various oral diseases with ABO blood groups have been established in the past.ABO blood groups are one of the most important human genetic traits that follows Mendalian inheritance.Since both the ABO blood groups and malocclusion are genetic traits, authors have carried out studies to assess if association between the two exists.The purpose of this narrative review is to enumerate studies that have assessed the association between dental, skeletal malocclusions with the ABO blood groups.