Evaluating video-based lectures on YouTube for dental education

Area of Science:

• Dental Education Technology
• Online Learning Platforms
• Multimedia in Medical Training

Background:

• Multimedia presentations and online platforms are increasingly used in dental education.
• Video-based lectures (VBLs) show benefits, but user reception and optimal features on platforms like YouTube are understudied.
• Evidence is needed for dental educators to effectively integrate YouTube videos for remote learning.

Purpose of the Study:

• To determine video metrics and viewership for dental education videos on YouTube.
• To assess audience demographics and retention rates for educational videos.
• To compare the efficacy of different video formats (slideshow vs. pencast) for content learning.

Main Methods:

• A cross-sectional survey of 683 viewers of "Mental Dental" YouTube videos.
• Analysis of analytics for 677,200 viewers to assess demographics, retention, and optimal video length.
• A randomized crossover study with 101 dental students comparing slideshow and pencast VBL formats.

Main Results:

• The primary audience for "Mental Dental" videos included dental students (44.2%) and professionals (37.8%).
• Audience retention declined at a steady rate of 1.34% per minute, irrespective of video length.
• No significant difference in quiz performance was found between slideshow and pencast formats, though students slightly preferred slideshows.

Conclusions:

• Dental students and professionals actively use and recommend VBLs.
• There is no specific video length that maximizes audience retention for dental education.
• Lecture format (slideshow vs. pencast) does not significantly affect content learning outcomes, supporting flexible implementation in dental curricula.