Background: To assess the knowledge and awareness of periodontal diseases among dental students. Materials & methods: The majority of students stated that they maintain regular toothbrushing habits, either once, twice, or more daily. Only a small percentage (1.5%) admitted to never cleaning their teeth. Moreover, more than half of the respondents (50%) expressed the belief that it is necessary to visit the dentist when experiencing gum bleeding. Results: A total sample of 200 students aged 18-25 years were enrolled. The questionnaire was distributed. The data was obtained and analyzed using the Statistical Package for the Social Sciences (SPSS) software version 11.0. Subgroup comparisons were performed using the Chi-square test, and statistical significance was set at P ≤ 0.05. Conclusion: Dental students moderately knew about effects of smoking on healing of periodontal diseases and knowledge about etiology was moderate.