Prevalence and Associated Factors for Crossbite Malocclusion in South Indian Subjects - A Retrospective Study

Malocclusion is considered a major public health problem and crossbite is a major orthodontic discrepancy affecting many individuals throughout the world. This may affect the quality of life due to disturbances of oral health and dentofacial aesthetics. A retrospective study was conducted in a University Hospital from July 2019 till March 2020 to assess the prevalence and associated factor for crossbite malocclusion in the South Indian population. Sample sizes of 1017 patients were selected from the case records of patients who reported to the University Hospital for orthodontic treatment. The data variables such as sociodemographic data, presence of crossbite, site of crossbite and presence of class II malocclusion were tabulated and analyzed using SPSS Version 20. Descriptive statistics and Chi-Square tests were performed. A total of 60 records with crossbite were included. The overall prevalence of crossbite in class II malocclusion was 6%. Posterior crossbite was common in males (60%) and females (76%) compared to anterior crossbite. Meanwhile, posterior crossbite was common in class II division 1 (67%) and class II division 2 (60%) than anterior crossbite. However, There was no statistically significant association between gender and malocclusion with crossbite (p>0.05). Thus, it can be concluded that the prevalence of crossbite in class II malocclusion was 6% and no significant difference was seen among gender and malocclusion with site of crossbite..