the prevalence of oral and maxillofacial pathologic lesions in pathology centers of zanjan (iran) over a 5-years period (2014-2020)

Background and objectives: the oral and maxillofacial region is exposed to many harmfulagents and can be affected by a wide range of reactive, infectious, cystic, precancerous, and neoplasticlesions. this study aimed to determine the prevalence of oral and maxillofacial pathologicallesions in pathology laboratories in zanjan.materials and methods: this retrospective descriptive study was conducted in the period2014-2020 by referring to the hospitals and laboratories with pathologists in zanjan. informationabout patients with histopathological lesions of oral and maxillofacial region was extracted, andstudied in terms of age, gender, location and histopathological type of lesion. finally, the collecteddata were entered into spss software version 22 and statistically analyzed (p<0.05).results: a total of 176 histopathological lesions were investigated. of them, 120 cases (58%)were female and 74 (42%) were male. the mean age of the patients was 39.4 years. the most prevalentlesion was periapical cyst (14.8%). in terms of tissue involved, the most lesions were relatedto soft tissue (67%) and in terms of anatomical location, the most lesions were gingival mucosallesions (35.2%).conclusion: the prevalence of pathological lesions was higher in females than in males. softtissue lesions were more than hard tissue lesions. gingival mucosal lesions were the most prevalentand lesions of the floor of the mouth and nasal vestibule lesions were the least prevalent ones. giventhe histopathologic nature of lesions, periapical cyst was the most prevalent lesion.