Prevalence of impacted premolar in Iraqi sample

Background: The most commonly impacted teeth are the third molars, maxillary canines, maxillary central incisors and premolars. Impacted premolars may lead to aesthetic concerns, masticatory inefficiency and oral hygiene difficulties as well as follicle pathology and destruction of adjacent structures, including neighboring teeth, the purpose of this study to shade light on the prevalence of impacted premolar in Iraqi sample. Subject, materials and method: Retrospective and protrospective studies invoved 2000 OPG examined by radiologist for age ranged between 15-55 years to indicate the prevelance of impacted premolar, uni or bilateral impaction, migration of impacted premolar and its association with pathology. Result: From 2000 OPG 99 patient with( 101 impacted premolar), 2 (204.%) bilateral and 97 (97.97%) unilateral, prevelance of upper 1st and 2nd premolar was (2.97%) and (5.94%) respectively, while for lower 1st and 2nd premolar was (11.88%) and (79.20%) respectively. From all impacted premolars only (2.97%) associated with pathology and (o.99%) migrated teeth. Conclusion: The most prominent one of premolars was lower 2nd premolar and the latest one was1st upper premolar, migrated teeth was very rare and the pathology associated with (2.97%) only. The causes related with impaction in this study retaind first decediouce molar and not enough space for eruption