knowledge and practice of iranian dentists regarding post space preparation and coronal reconstruction of endodontically treated teeth

Background: due to severe coronal destruction in endodontically treated teeth (ett), the canal space is often utilized to provide retention for the core material. objectives: this study aimed to assess the knowledge level and practices of iranian dentists regarding post space preparation and coronal reconstruction of ett. methods: this cross-sectional study was conducted with 117 dentists at kurdistan province in 2021. data were collected using a two-part questionnaire. the first part included 6 questions regarding the demographic information of the participants. the second part comprised 10 questions regarding the methods of post space preparation and coronal reconstruction of ett. spss-20 software was used to analyze the data, calculating frequency (%), mean, and standard deviation. results: 44.4% of the participants used amalgam along with a prefabricated post, 59% correctly identified the definition of the ferrule effect, and 87.2% believed that the ferrule effect increases fracture resistance. additionally, 39.3% reported preparing the post space immediately after obturation; 91.5% used rotary instruments for removing root filling material, 93.2% reported cleaning the post space prior to cementation of the intracanal post, and 35.9% used saline for this purpose. moreover, 72.9% believed that teeth with post and core necessarily require a prosthetic crown, and 94% used full-coverage crowns for ett. coronal fracture was reported by 62.4% as the most common cause of failure of ett. conclusions: the knowledge level of dental clinicians regarding post space preparation and coronal reconstruction of ett was moderate, while their practice level was poor. the most common variables that had a significant relationship were age and academic degree.