Objective: The purpose of this research was to assess the attitudes and habits of oral health of persons who attended the examination for the purpose of early detection of potentially malignant changes in the oral cavity. Materials and methods: The research was conducted at the Department of Oral Medicine and Periodontology, Faculty of Medicine, University of Split. Patients who responded to the “Open Day” held at the Split Clinical Hospital Center in April 2022 and 2023 participated. Respondents filled out questionnaires that are part of the MADE project of international cooperation. 187 respondents participated. Results: Respondents most often describe the health of their teeth and gums as "good". Most of them brush their teeth twice or more a week, and almost half do not know whether their toothpaste contains fluoride. 57.2% of the respondents visited a dental doctor less than 6 months ago, and almost a third of them had written that a regular examination is the reason for visiting. Dry mouth is the most common complaint among respondents that occurs very often. The most common foods that patients consume every day are fruit (57.8%), sweet pies and pastries (30.5%) and coffee with sugar (40.6%). 16.6% of respondents smoke cigarettes every day. In the last month, at the time of the survey, 1.6% of the respondents consumed 5 or more drinks on the occasion of alcohol consumption. Most respondents live in the city (90.4%) and a dental doctor is available to them at a distance of less than 2 kilometers (79.7%). Conclusion: The respondents regularly practice oral hygiene (70,6%), but education is needed on the use of additional oral hygiene tools, such as an interdental brush and dental floss. Food rich in carbohydrates is represented to a large extent in the diet of the respondents, therefore education and correction of the diet of the respondents is necessary. Smoking and alcohol consumption are not widely spread among the respondents. The respondents (57,2%) have regular dental check-ups.