Aim: The objective of this study is to assess the prevalence of malocclusion and orthodontic treatment needed in preadolescent patients and its association. Background: The objective of orthodontic treatment is to accomplish ideal impediment within the framework of function, stability and esthetics.The patients who look for orthodontic treatment are worried about working on their appearance and social acknowledgment, frequently more than they are with working on their oral health. Upgrading these parts of personal satisfaction is a significant rationale in going through orthodontic treatment.Pre adolescent is the ideal age group for undergoing orthodontic treatment treating malocclusion. Materials and Methods: The data was collected from Saveetha dental college department.The details of outpatients were collected, with inclusion and exclusion criteria. Results: This study shows class I malocclusion with higher prevalence rates when compared with other malocclusion. The need for orthodontic treatment is high between the age group of 11-14 years. Conclusions: The prevalence of malocclusion is a significant deviation from the normal occlusion and the population requiring orthodontic treatment is high.