This study demonstrated an inadequate level of knowledge on oral cancers in both groups. Additional training in universities as well as continuing educational programmes on prevention and early detection of oral cancers is recommended.

Background: AIDS is as a global fatal disease and the only way to combat the disease is education and knowledge about the methods of transmission and prevent of the disease. Objective: The aim of this study was to evaluate the knowledge and attitudes of people admitted to the Qazvin faculty of Dentistry toward AIDS. Methods: A cross-sectional descriptive study was conducted in 2013-2014 using a standard questionnaire between 270 people admitted to the Qazvin faculty of Dentistry. Findings: According to data analysis, 150 subjects (55.6%) had a poor knowledge about the disease and with increasing the age, knowledge was lower. The attitude of 153 subjects (56.7%) was moderate. All the participants were married and had 20 years old at least. Conclusion: This study indicated that the knowledge and attitude of people admitted to the Qazvin faculty of Dentistry was inappropriate and there was a necessity to promote absolute knowledge and good attitude about AIDS.