Prevalence Of Class III Malocclusion In Mixed Dentition

Etiology of class III malocclusion is multifactorial. It results from a disturbance of normal development, rather than from any pathological process. Based on various combinations of skeletal components, patients with class III malocclusion exhibit a wide range of underlying skeletal and craniofacial features. Prevalence of class III malocclusion can vary among different racial and ethnic groups. The aim of this study is to determine the prevalence of class III malocclusion in mixed dentition in a private dental institute. A study was carried out by collecting data by reviewing patients data and analysing the data of 86000 patients between June 2019 and March 2020 at the private dental institute. The sample size that was taken included 4420 number of children with mixed dentition aged 6-12 years old, who came to the private dental institute for consultation. The dental malocclusion status was analysed and recorded. Data of children that had class III malocclusion were segregated and analysed with gender and age distribution. Data was statistically analysed using SPSS 2.0 (IBM 2019) PC Version for Windows, Chi-Test was conducted. Result was recorded. Out of 4420 patients, 395 patients had class III malocclusion. The study revealed that the prevalence of class III malocclusion in a private dental institute was only 8.9%, predominantly male patients. About 395 had class III malocclusion which included 211(53%) were male patients and female patients were 184(47%). Statistically, the association of age and gender among patients with class III malocclusion was not significant (p>0.05), [Pearson Chi Square Test Value= 5.394; df= 6; p value= 0.494 ( > 0.05)]. As a conclusion, the prevalence of Class III malocclusion in mixed dentition in the private dental institute was found to be 8.9%.