Aim: To evaluate the relationship between anxiety levels determined by Beck Anxiety Index (BAI) and Temporomandibular Joint Dysfunction (TMD) prevalence determined by Fonseca Anamnestic Index (FAI) and Class I, Class II and Class III orthodontic malocclusions in young adults who apply with the desire to receive orthodontic treatment. Material and Methods: 120 participants, consisting of young adults aged 14-24, who consecutively applied for the correction of malocclusions, constitute the

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... l of our study. As a result of the clinical examination, individuals were divided into 3 groups as Angle Class I, II and III according to their dental malocclusions. Each group is divided into two subgroups as male and female individuals. As a result, 6 groups were formed with 20 individuals in each group. In addition to routine orthodontic examination, FAI was applied to evaluate the prevalence and severity of TMD, and BAI was applied to determine their anxiety levels. Fischer's Exact test, Mann-Whitney U test and Kruskal Wallis test were used to evaluate the data. Kendall Tau-b correlation test was used to evaluate the relationship between BAI and FAI. Significance level was accepted as p