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BACKGROUND: Sports dentistry aims to prevent and manage orofacial injuries, tooth fractures, tooth loss, and soft tissue trauma during sport activities. Mouthguards are appliances that protect athletes from dental trauma during contact sports. The video-sharing platform YouTube has a large number of informative videos about mouthguards. This study aimed to analyze the quality, accuracy, and reliability of YouTube videos about mouthguards, investigate the relationship between the features and the quality of mouthguard videos on YouTube, and provide suggestions for future informative content about mouthguards and sports dentistry. MATERIALS AND METHODS: The first 100 videos for each keyword from YouTube were collected using the keywords "mouthguard," "sports mouthguard," and "mouthguard and dental trauma." Videos meeting the inclusion criteria were categorized based on publisher (dental professionals and nonprofessionals) and type (animation/slideshow, interview, and product introduction). Video features were recorded. Video content quality, reliability, and accuracy were measured by the Video Information and Quality Index (VIQI), the Journal of the American Medical Association (JAMA) benchmarks, the DISCERN Instrument, the Global Quality Scale (GQS), and the usefulness score. Data were analyzed using SPSS (IBM 29.0) at a 95% statistical significance level (p = 0.05). RESULTS: Out of 300 videos, 80 videos were included. Most of the videos were uploaded by dental professionals (n = 49). The average values of the VIQI, JAMA, DISCERN, and GQS scores were 15.33 out of 20.0, 1.38 out of 4.00, 49.24 out of 80.0, and 2.99 out of 5.00, respectively. Videos uploaded by dental professionals had significantly higher scores in VIQI, JAMA, DISCERN, GQS, and usefulness scores but exhibited a lower number of likes, comments, and views (p < 0.05). Of all included videos, 51% (n = 41) were categorized as "moderately useful" and 10% (n = 8) as "very useful." CONCLUSIONS: Mouthguard videos uploaded by dental professionals are more useful, accurate, and of higher quality. Therefore, patients should consider the information shared by dental professionals. Greater participation from dentists in sharing high-quality content would be beneficial.
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