Would YouTube a reliable source of information about dental bleaching in Brazil?

Abstract Introduction Dental Bleaching is a widely procedure in dental practice, conducting patients to search for information and one of these sources of information it is videos from YouTube. Objective: Evaluate quality of information in videos from YouTube about dental bleaching in Brazil. Material and method: YouTube search for “dental bleaching” was performed. Theses videos are watched in full and categorized for two examinators. Reliability and usefulness were used to value the quality of information. Mann-Whitney test was used in statical analysis. Result The first 100 videos were examined for exclusion criteria and 22 were excluded, yielding 78 videos. About Usefulness of videos 65,4% were classified as non useful, 26,9% little useful, 6,4% moderately useful and just 1,3% as very useful. About reliability of videos 94% non used reliable sources of information, 69% of information was not balanced and impartial. However 60% of videos showed clear and objective information. Conclusion Actually YouTube was not a appropriate of information for patients about dental bleaching in Brazil. About quality of the videos, majority was not satisfactory for useful and reliability criteria. Dentists are the better source of information about dental bleaching, however most popular videos were from independent users e normally approaching homemade techniques of bleaching.