Prevalence of systemic diseases and related factors in oral medicine department,s patients of Tehran Islamic Azad dentistry faculty in 1396-1399

Background and Aims: By considering  the relatively high prevalence of systemic diseases, the importance of these diseases in patient management, treatment planning, and treatment outcomes, the controversy in the reported incidence rates, and changes in the frequency of diseases over time, The aim of this study was to determine the frequency of systemic diseases and related factors in patients referred to the Department of Oral and Maxillofacial Diseases, School of Dentistry, Islamic Azad University of Tehran, between 2017 and 2020. Material and Methods: In this descriptive cross-sectional and retrospective study, 1699 records of patients referred to the Department of Oral and Maxillofacial Diseases department  between 2017-2020, which were in the archives of the faculty, were reviewed. Data were recorded in Information forms included :age, sex, place of birth, marital status, occupation, pregnancy, smoking , drug use, history of hospitalization , history of specific illness in first-degree relatives , history and type of systemic diseases. Patients were classified according to the mentioned variables and the frequency of each class was calculated. Data were analyzed by spss11 and statistical tests were used are: chi2- Anova- Binary logestic regression. Results: Among 1699 patients, Systemic diseases were reported in 717 patients (42.2%). The most common systemic diseases are hypertension (19.1%), diabetes (14.4%), gastrointestinal diseases (10.7%) and the least common systemic diseases are rheumatic fever, history of chemotherapy and radiotherapy and endocarditis.The relationship  Between age, marital status, drug use, smoking, history of hospitalization were significant and having first-degree relatives with a history of underlying diseases with systemic diseases was statistically significant. (P=0.003) Conclusion:  The results of the present study showed that relatively remarkebale percentag of our sample sizes which reffered to dental school, sufferd from systemic diseases.this mater emphasis on exact and correct history taking to achive the best and low risk patient's treatment