Educational videos as a teaching approach to enhance students’ practical skills in preclinical courses
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Introduction: In the education of dental students, practical seminars are of great importance for obtaining necessary skills and ensuring patient safety. The use of video teaching material is increasingly popular and has been useful under Covid-19 teaching circumstances, where practical courses have been somewhat limited according to the pandemic situation. To our knowledge, this is the first study until now to evaluate video assisted teaching, regarding oral hygiene instructions, in dental education. Objective: The aim of this study was to investigate if high-quality educational videos could be a useful addition to the practical course of oral hygiene instructions in single or repetitive viewing and therefore be beneficial for improving students´ practical skills in performing oral hygiene instructions, including the perception of the students and their perceived security. Methods: 82 students form the 2 nd term of dental school were enrolled in this study and assigned to two groups. The students watched two videos showing the application of the bass toothbrushing method and the interdental brushing technique. Group 1 viewed the video only once, whereas Group 2 viewed the videos repeatedly every week on four consecutive weeks before seminar. By the end of the four weeks, the students were conducted to a practical test to evaluate the level of their obtained skills and filled out a questionnaire regarding their subjective experience of the educational videos. Conclusion: The results of this trial show that the students subjectively gained increased security in precision after watching the videos, whilst performing the required tasks. The students exhibited significant improvement in toothbrushing technique and applying the interdental brush after repetitive viewing of the videos compared to single viewing. There were no significant differences between groups regarding the assessment of the size of interdental spaces using a colorimetric probe.
