Prevalence and Associated Factors for Arch Forms in Patients with Class IIIMalocclusion Visiting a Private Dental College in Chennai
The dental arch form is defined as the curving shape formed by the configuration of the bony ridge. Arch form must be examined before the beginning of the treatment as this would give valuable information about the position into which teeth can be moved during treatment. The aim of the study is to evaluate the prevalent arch form and associated factors among patients with class III malocclusion visiting Saveetha dental college and hospitals. A retrospective study was designed using case records of patients visiting the university hospital from June 2019- February 2020. About 100 case sheets of patients visiting the Department of Orthodontics and containing information on malocclusion and arch type was retrieved and analysed. This data was then statistically analyzed using SPSS version 20.0 software. The study included 100 patients out of which 74% were males and 26% were females. 28% of the participants were adolescents (12-18 years) and 72% of the participants were adults (19-40 yrs). The results revealed that average or ovoid was the prevalent arch form (63%) followed by broad or square arch (31%) and then narrow or tapered arch form (6%). Association between arch form and age, gender was statistically not significant. (p value>0.05). Within the limits of the study, it can be concluded that most of the class III malocclusion patients have an average arch form followed by square arch form.