Is there any sustained effect of the coronavirus disease 2019 pandemic? - A controlled trial comparing pre- and post-pandemic oral radiology courses.

Purpose/objectives: Due to the coronavirus disease 2019 (COVID-19) pandemic, undergraduate education shifted towards online-only formats from April 2020 until July 2021. Previous research indicated a negative effect on students' competence development, and it remains unclear whether blended learning concepts could provide compensation. Therefore, the present study aimed to compare pre- to post-pandemic students' performance in standardized baseline (BL) and final exams (FE), as well as the associated knowledge gain (KG) in three consecutive undergraduate blended learning-based oral radiology courses (C1-3).