ABSTRACT Background: The main physical appearance that can be seen from the face is inseparable from the appearance of the teeth and mouth. The teenagers realize that the first impression is greatly influenced by appearance. Purpose: Determine the relationship between the perception of young adults using fixed orthodontic appliance and interest towards of malocclusion treatment inclass of 2019 undergraduate students of Faculty of Dental Medicine Universitas Airlangga Surabaya. Methods: This research was an analytic cross-sectional study design and the sampling technique used purposive sampling. The amount of sample which met the inclusion and exclusion criteria was 87 students. Data collected by giving questionnaires to 87 students. Cross-tabulation between perception and interests showed that the most interests of the respondent were seen in the moderate category in the perception of both functional and aesthetic aspects. The data were analyzed using the chi-square test with α = 0,05. Results: The relationship between the perception of late adolescence using fixed orthodontic appliance and interest towards of malocclusion treatment did not show a significant result with p = 0,351. Conclusions: There is no relationship between the perception of young adults using fixed orthodontic appliance and interest towards of malocclusion treatment in class of 2019 undergraduate students of Faculty of Dental Medicine Universitas Airlangga Surabaya.