ABSTRACT
Periodontitis does not affect all patients by the same way. There are some risk factors in some people that make them more sensitive to progress of periodontitis. Smoking, uncontrolled diabetes, and special pathogens increase the risk of periodontitis. Other factors such as stress, depression and anxiety, are not crucial risk factors for periodontitis yet. Biologic explanation of this relation is that mental conditions and exposure to stressful situations can alter immune response. The aim of this study was to review the psychological factors of anxiety and depression associated with periodontitis. For this review article, we have searched through internet by the following keywords; periodontal disease, anxiety, depression. We have tried to cover almost all dental-related sites and journals as well as Pubmed from 1990-2010. Most published studies support a positive relationship between periodontitis and several psychosocial factors. Life style, stressful conditions, hormonal changes, nonchalance in oral hygiene, habits such as smoking are predisposing factors in periodontal diseases.