Hamadan University of Medical Sciences Avicenna Journal of Dental Research 2423-7582 8 2 2016 03 01 Association of Oral Health Behavior-Related Factors With Periodontal Health and Oral Hygiene 6 6 10.17795/ajdr-29827 EN Sepideh Seyedzadeh Sabounchi Parviz Torkzaban Shabnam Seyedzadeh Sabounchi Reza Ahmadi Journal Article 10.17795/ajdr-29827 2015 05 11 2015 06 30 Background: There are a variety of risk factors that can influence the initiation, continuance, and treatment of periodontal diseases. Objectives: The purpose of this study was to assess the effect of oral health behavior-related factors on the periodontium. Materials and Methods: A total of 130 participants were included in the study. After completing questionnaires regarding their basic information (age, gender, height, and weight), lifestyle, knowledge, attitude, and oral hygiene behaviors, they were clinically examined for BOP, CPI and SOHI indices. Finally, the data were analyzed using SPSS software with t-tests, ANOVA, and correlation coefficients. Results: In total, 50.8% of participants had CPI 2, and the average of SOHI was 1.97 ± 0.7 (fair to poor). Among lifestyle variables, smoking and physical activity each had a significant relationship with periodontal health (P = 0.0001 and P = 0.001, respectively). There were also significant relationships between knowledge, attitude, and CPI and SOHI scores (P = 0.0001). BMI also had a signifi- cant relationship with CPI (P = 0.04) and SOHI (P = 0.03) scores. Conclusions: Oral health behavior-related factors can influence patients’ periodontal status and oral hygiene levels.