Objective: The main aim of this research was to examine frequency and kind of pathological changes found on oral mucosa of the oral cavity, as well as the presence of subjective cumbers in oral cavity all examined within the Homeland War defenders' population. Materials and methods: The research was held from April, 2018 until April, 2019., and was done on 102 Croatian Homeland War veterans. Gender, age, residence, education, working status, alcohol and smoking habits were the information taken for this survey. Every examined person was questioned how often they visit dentist and family doctor, as well as if they do tests on the whole oral mucosa of the oral cavity in order to prevent any malignant changes on the oral mucosa of the oral cavity. Thorough medical examinations were held after the anamneses had been entirely over. Results: Among 102 participants, 88 (86.2 %) were men, 14 (13.8 %) were women, average age of 54. Among them, 64 (62.7 %) used alcohol and 46 (45.1 %) used cigarettes. However, most of the participants (75.4 %) denied any cumbers in the oral cavity. Dentists usually did the whole oral cavity examinations in 33 (32.3 %) participants, but family doctors did that kind of examinations only in seven (6.8 %) participants. Most of them usually did one test per year. Conclusion: In 35 participants, through the clinical examinations 41 modifications in oral cavity were found and 14 were potentially malignant modifications. Six of participants have never heard of oral cavity cancer. Most dentists and family doctors never did the whole detailed examinations of oral mucosa of oral cavity of ther patients. Those are degrading facts that lead to conclusion that both doctors and civil population need more education.