Association of ABO blood group with malocclusion severity – A cross-sectional study

Background: Malocclusion is defined as irregularity of teeth and it is one of the worldwide dental health priorities.The etiology of malocclusion is multifactorial.Although there are numerous types of research in relevance, still there is a paucity of the research on association of ABO blood groups with malocclusion severity in the population of Namakkal district, India. Aim and Objective:The study aims to find out whether there is any association between the ABO blood group and malocclusion severity among the population of Namakkal district using the Dental Aesthetic Index (DAI). Materials and Methods:The study was performed among 400 patients who reported to the Department of Orthodontics and Dentofacial Orthopedics, with the age group of 15 to 28 years.Subjects were equally divided among their respective blood groups.Descriptive analysis was performed using SPSS (IBM SPSS Statistics for Windows, Version 25.0.Armonk, NY: IBM Corp).ANOVA was done to find out the association between malocclusion severity and ABO blood groups.Results: The association showed statistical significance (A>O>B>AB) among the blood groups.Conclusions: Prompt diagnosis, early intervention, and treatment planning would aid in the reversal of malocclusion.Periodic dental attendance during the developmental stages will help in achieving this.