The aim of this research is to assess the level of knowledge and the need for treatment of primary teeth among students of two faculties of the University of Rijeka, i.e. the Faculty of Economics and the Faculty of Dental Medicine. The respondents who participated in this research are students from two faculties in Rijeka, from the Faculty of Economics and the Faculty of Dental Medicine. They are additionally divided by years of study. The first group is students from the first year of the Faculty of Economics (21 students), and the second group is students from the first year of the Faculty of Dental Medicine (27 students). The third group consists of fifth-year students (23 students), and therefore final year students of the Faculty of Economics and students of the final year, sixth year of the Faculty of Dental Medicine, who form the fourth group of respondents of 27 students. A total of 98 students participated. The research was carried out with the help of the Google form "Importance of preservation and rehabilitation of primary teeth" (appendix 1), which was sent to students via electronic mail. The research showed that the students of the Faculty of Dental Medicine have certain prior knowledge about primary teeth and their treatment if the first year of study is taken into account, while the students of the sixth year have formed attitudes through what was provided to them at the faculty during their education. Students in higher years of study have more knowledge and understanding of how important primary teeth are in the proper development of a child. Students of the Faculty of Dental Medicine have more correct answers in the survey because of their desire and ambition to know more about their profession and future work, on the other hand, students of the Faculty of Economics have other fields of interest and do not attach so much importance to knowledge about primary dentition. This paper shows the need for additional education of students on matters regarding oral health, but also of the entire population, considering that economics students represent a part of the population that is in no way connected to education in the field of dental medicine, like the majority of the general population.